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Current weather in Williamstown is clear sky.

Where can I find the hourly weather forecast for Williamstown?

This page shows hourly weather forecast for Williamstown, including temperature, wind, precipitation, humidity and cloud cover.

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Weather data for Williamstown is updated regularly with the latest available observations and forecasts.

Now · 6:49 PM

Williamstown Weather & Hourly Forecast

United States · Kentucky · 41097

81°F

Sunny

Feels like: 86°F

💧 Humidity 80% 🌡 Pressure 30.00 inHg 💨 Wind 8 mph 👁 Visibility 16.6 mi ☁ Clouds 9% ☀️ UV index 0.8 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Williamstown

Today

7:00 PM

Sunny

81° 💧 0.000 in 💨 8 mph H 80%30.00 inHg

10:00 PM

Clear night

77° 💧 None 💨 10 mph H 85%30.00 inHg

Tomorrow

1:00 AM

Mostly clear night

76° 💧 0.102 in 💨 9 mph H 85%30.00 inHg

4:00 AM

Thunderstorms

71° 💧 0.908 in 💨 4 mph H 99%30.03 inHg

7:00 AM

Severe thunderstorms

70° 💧 0.546 in 💨 8 mph H 98%30.03 inHg

10:00 AM

Overcast

73° 💧 0.033 in 💨 11 mph H 94%30.03 inHg

1:00 PM

Light thunderstorms

75° 💧 0.138 in 💨 10 mph H 91%30.00 inHg

4:00 PM

Light thunderstorms

77° 💧 0.257 in 💨 6 mph H 90%29.91 inHg

7:00 PM

Light rain

75° 💧 0.067 in 💨 2 mph H 94%29.88 inHg

10:00 PM

Light rain

72° 💧 0.007 in 💨 3 mph H 99%29.94 inHg

Friday

1:00 AM

Overcast night

72° 💧 0.004 in 💨 2 mph H 99%29.94 inHg

4:00 AM

Overcast night

71° 💧 0.003 in 💨 2 mph H 99%29.91 inHg

7:00 AM

Mist at night

71° 💧 0.010 in 💨 4 mph H 99%29.97 inHg

10:00 AM

Light rain

72° 💧 0.024 in 💨 5 mph H 97%29.97 inHg

1:00 PM

Light rain

75° 💧 0.014 in 💨 5 mph H 90%29.97 inHg

4:00 PM

Overcast

80° 💧 0.035 in 💨 3 mph H 73%29.91 inHg

Today

7:00 PM

Sunny

81° 💧 0.000 in 💨 8 mph H 80%30.00 inHg

8:00 PM

Partly cloudy night

78° 💧 None 💨 9 mph H 83%30.00 inHg

9:00 PM

Mostly clear night

77° 💧 None 💨 9 mph H 87%30.00 inHg

10:00 PM

Clear night

77° 💧 None 💨 10 mph H 85%30.00 inHg

11:00 PM

Clear night

76° 💧 None 💨 8 mph H 85%30.03 inHg

Tomorrow

12:00 AM

Clear night

76° 💧 None 💨 8 mph H 86%30.03 inHg

1:00 AM

Mostly clear night

76° 💧 None 💨 9 mph H 85%30.00 inHg

2:00 AM

Light thunderstorms

74° 💧 0.026 in 💨 8 mph H 91%30.03 inHg

3:00 AM

Light thunderstorms

72° 💧 0.075 in 💨 7 mph H 97%30.03 inHg

4:00 AM

Thunderstorms

71° 💧 0.242 in 💨 4 mph H 99%30.03 inHg

5:00 AM

Thunderstorms

70° 💧 0.217 in 💨 4 mph H 99%30.03 inHg

6:00 AM

Severe thunderstorms

70° 💧 0.449 in 💨 5 mph H 99%30.03 inHg

7:00 AM

Severe thunderstorms

70° 💧 0.530 in 💨 8 mph H 98%30.03 inHg

8:00 AM

Light rain

71° 💧 0.014 in 💨 9 mph H 98%30.00 inHg

9:00 AM

Overcast

72° 💧 0.002 in 💨 10 mph H 97%30.03 inHg

10:00 AM

Overcast

73° 💧 0.002 in 💨 11 mph H 94%30.03 inHg

11:00 AM

Light rain

75° 💧 0.006 in 💨 12 mph H 87%30.03 inHg

12:00 PM

Light thunderstorms

76° 💧 0.025 in 💨 11 mph H 89%30.00 inHg

1:00 PM

Light thunderstorms

75° 💧 0.042 in 💨 10 mph H 91%30.00 inHg

2:00 PM

Light thunderstorms

74° 💧 0.081 in 💨 9 mph H 96%29.97 inHg

3:00 PM

Light rain

78° 💧 0.015 in 💨 8 mph H 85%29.94 inHg

4:00 PM

Light thunderstorms

77° 💧 0.033 in 💨 6 mph H 90%29.91 inHg

5:00 PM

Thunderstorms

74° 💧 0.216 in 💨 5 mph H 95%29.91 inHg

6:00 PM

Light rain

75° 💧 0.007 in 💨 1 mph H 94%29.88 inHg

7:00 PM

Light rain

75° 💧 0.008 in 💨 2 mph H 94%29.88 inHg

8:00 PM

Light rain

73° 💧 0.049 in 💨 2 mph H 98%29.91 inHg

9:00 PM

Light rain

72° 💧 0.010 in 💨 2 mph H 99%29.91 inHg

10:00 PM

Light rain

72° 💧 0.005 in 💨 3 mph H 99%29.94 inHg

11:00 PM

Overcast night

72° 💧 0.001 in 💨 2 mph H 99%29.94 inHg

Friday

12:00 AM

Overcast night

72° 💧 0.001 in 💨 2 mph H 99%29.97 inHg

1:00 AM

Overcast night

72° 💧 0.003 in 💨 2 mph H 99%29.94 inHg

2:00 AM

Overcast night

71° 💧 0.000 in 💨 0 mph H 99%29.94 inHg

3:00 AM

Mist at night

71° 💧 0.000 in 💨 1 mph H 100%29.94 inHg

4:00 AM

Overcast night

71° 💧 0.001 in 💨 2 mph H 99%29.91 inHg

5:00 AM

Overcast night

71° 💧 0.001 in 💨 2 mph H 99%29.94 inHg

6:00 AM

Mist at night

71° 💧 0.001 in 💨 2 mph H 99%29.94 inHg

7:00 AM

Mist at night

71° 💧 0.002 in 💨 4 mph H 99%29.97 inHg

8:00 AM

Mist

71° 💧 0.003 in 💨 4 mph H 99%29.97 inHg

9:00 AM

Light rain

71° 💧 0.005 in 💨 4 mph H 98%29.97 inHg

10:00 AM

Light rain

72° 💧 0.007 in 💨 5 mph H 97%29.97 inHg

11:00 AM

Light rain

73° 💧 0.008 in 💨 4 mph H 96%29.97 inHg

12:00 PM

Light rain

74° 💧 0.008 in 💨 5 mph H 93%29.97 inHg

1:00 PM

Light rain

75° 💧 0.007 in 💨 5 mph H 90%29.97 inHg

2:00 PM

Overcast

77° 💧 0.004 in 💨 4 mph H 84%29.94 inHg

3:00 PM

Overcast

80° 💧 0.003 in 💨 4 mph H 77%29.94 inHg

4:00 PM

Overcast

80° 💧 0.003 in 💨 3 mph H 73%29.91 inHg

5:00 PM

Light rain

76° 💧 0.029 in 💨 5 mph H 88%29.88 inHg

6:00 PM

Mostly cloudy

77° 💧 0.003 in 💨 3 mph H 85%29.88 inHg

7:00 PM

Light rain

73° 💧 0.035 in 💨 7 mph H 93%29.91 inHg

8:00 PM

Light rain

72° 💧 0.011 in 💨 2 mph H 96%29.91 inHg

9:00 PM

Overcast night

71° 💧 0.000 in 💨 3 mph H 99%29.91 inHg

10:00 PM

Overcast night

70° 💧 None 💨 4 mph H 99%29.94 inHg

11:00 PM

Overcast night

70° 💧 None 💨 5 mph H 99%29.94 inHg

Saturday

12:00 AM

Overcast night

70° 💧 None 💨 4 mph H 99%29.94 inHg

1:00 AM

Mostly cloudy night

69° 💧 None 💨 4 mph H 99%29.94 inHg

2:00 AM

Mostly cloudy night

69° 💧 None 💨 4 mph H 99%29.94 inHg

3:00 AM

Mostly clear night

69° 💧 None 💨 4 mph H 99%29.91 inHg

4:00 AM

Clear night

68° 💧 None 💨 3 mph H 99%29.91 inHg

5:00 AM

Clear night

68° 💧 None 💨 3 mph H 99%29.91 inHg

6:00 AM

Clear night

68° 💧 None 💨 3 mph H 99%29.94 inHg

7:00 AM

Clear night

68° 💧 None 💨 4 mph H 99%29.94 inHg

8:00 AM

Sunny

70° 💧 None 💨 5 mph H 99%29.94 inHg

11:00 AM

Light rain

76° 💧 None 💨 6 mph H 95%29.97 inHg

2:00 PM

Overcast

82° 💧 None 💨 8 mph H 74%29.94 inHg

5:00 PM

Light rain

82° 💧 None 💨 7 mph H 72%29.88 inHg

8:00 PM

Clear night

76° 💧 None 💨 7 mph H 88%29.94 inHg

11:00 PM

Clear night

72° 💧 None 💨 7 mph H 97%29.97 inHg

Sunday

2:00 AM

Mostly clear night

71° 💧 None 💨 5 mph H 99%30.00 inHg

5:00 AM

Overcast night

71° 💧 None 💨 5 mph H 99%30.00 inHg

8:00 AM

Partly cloudy

71° 💧 None 💨 4 mph H 98%30.06 inHg

11:00 AM

Overcast

79° 💧 None 💨 2 mph H 78%30.06 inHg

2:00 PM

Partly cloudy

84° 💧 None 💨 1 mph H 64%30.03 inHg

5:00 PM

Partly cloudy

86° 💧 None 💨 3 mph H 56%29.97 inHg

8:00 PM

Mostly clear night

78° 💧 None 💨 3 mph H 82%30.00 inHg

11:00 PM

Clear night

74° 💧 None 💨 4 mph H 92%30.06 inHg

Monday

2:00 AM

Clear night

71° 💧 None 💨 4 mph H 95%30.03 inHg

5:00 AM

Clear night

70° 💧 None 💨 4 mph H 95%30.03 inHg

8:00 AM

Sunny

71° 💧 None 💨 5 mph H 95%30.06 inHg

11:00 AM

Sunny

82° 💧 None 💨 5 mph H 72%30.09 inHg

2:00 PM

Mostly sunny

87° 💧 None 💨 3 mph H 57%30.03 inHg

5:00 PM

Sunny

87° 💧 None 💨 5 mph H 55%30.00 inHg

8:00 PM

Clear night

79° 💧 None 💨 5 mph H 79%30.00 inHg

11:00 PM

Clear night

75° 💧 None 💨 6 mph H 87%30.00 inHg

Tuesday

2:00 AM

Clear night

72° 💧 None 💨 4 mph H 89%30.03 inHg

5:00 AM

Clear night

70° 💧 None 💨 4 mph H 90%30.03 inHg

8:00 AM

Sunny

71° 💧 None 💨 5 mph H 86%30.06 inHg

2:00 PM

Mostly sunny

89° 💧 None 💨 7 mph H 58%30.03 inHg

8:00 PM

Mostly clear night

81° 💧 None 💨 3 mph H 81%30.03 inHg

Wednesday

2:00 AM

Mostly clear night

74° 💧 None 💨 4 mph H 96%30.09 inHg

8:00 AM

Sunny

72° 💧 None 💨 4 mph H 98%30.12 inHg

2:00 PM

Overcast

83° 💧 None 💨 1 mph H 72%30.12 inHg

8:00 PM

Mostly cloudy night

73° 💧 None 💨 2 mph H 99%30.09 inHg

Thursday

2:00 AM

Mostly cloudy night

70° 💧 None 💨 1 mph H 100%30.12 inHg

8:00 AM

Overcast

71° 💧 None 💨 3 mph H 100%30.12 inHg

2:00 PM

Overcast

84° 💧 None 💨 8 mph H 69%30.03 inHg

8:00 PM

Light thunderstorms

73° 💧 None 💨 7 mph H 97%29.97 inHg

Friday

2:00 AM

Moderate rain

70° 💧 None 💨 10 mph H 99%29.94 inHg

8:00 AM

Mostly sunny

65° 💧 None 💨 8 mph H 98%30.03 inHg

2:00 PM

Mostly sunny

74° 💧 None 💨 8 mph H 60%30.03 inHg

8:00 PM

Mostly clear night

68° 💧 None 💨 6 mph H 72%30.00 inHg

Saturday

2:00 AM

Mostly cloudy night

65° 💧 None 💨 6 mph H 78%30.00 inHg

8:00 AM

Sunny

61° 💧 None 💨 5 mph H 92%30.03 inHg

2:00 PM

Mostly sunny

73° 💧 None 💨 7 mph H 57%30.00 inHg

8:00 PM

Partly cloudy night

65° 💧 None 💨 6 mph H 78%29.97 inHg

Sunday

2:00 AM

Mostly clear night

60° 💧 None 💨 5 mph H 90%30.00 inHg

8:00 AM

Sunny

57° 💧 None 💨 5 mph H 93%30.06 inHg

2:00 PM

Light rain

71° 💧 None 💨 7 mph H 60%30.06 inHg

8:00 PM

Mostly clear night

64° 💧 None 💨 7 mph H 78%30.06 inHg

Monday

2:00 AM

Clear night

54° 💧 None 💨 10 mph H 73%30.15 inHg

8:00 AM

Partly cloudy

52° 💧 None 💨 10 mph H 73%30.21 inHg

2:00 PM

Sunny

65° 💧 None 💨 11 mph H 55%30.21 inHg

8:00 PM

Mostly clear night

59° 💧 None 💨 9 mph H 66%30.24 inHg

Tuesday

2:00 AM

Overcast night

53° 💧 None 💨 11 mph H 69%30.30 inHg

8:00 AM

Overcast

51° 💧 None 💨 11 mph H 68%30.33 inHg

2:00 PM

Mostly cloudy

60° 💧 None 💨 10 mph H 59%30.33 inHg

8:00 PM

Mostly clear night

56° 💧 None 💨 8 mph H 67%30.30 inHg

Wednesday

2:00 AM

Clear night

50° 💧 None 💨 7 mph H 80%30.30 inHg

8:00 AM

Sunny

48° 💧 None 💨 6 mph H 85%30.33 inHg

2:00 PM

Sunny

68° 💧 None 💨 5 mph H 48%30.30 inHg

8:00 PM

Mostly clear night

61° 💧 None 💨 8 mph H 61%30.24 inHg

Thursday

2:00 AM

Mostly clear night

52° 💧 None 💨 5 mph H 77%30.24 inHg

8:00 AM

Partly cloudy

50° 💧 None 💨 6 mph H 86%30.18 inHg

In Williamstown and, more broadly, across the state of Kentucky: The evening will be mostly cloudy with temperatures remaining quite warm, ranging from 82 to 90 degrees Fahrenheit. A slight chance of rain exists, with accumulation expected to be around 0.09 inches. The likelihood of rain is high, so some areas may experience brief showers. Winds will be light from the southeast, generally blowing at around 6 mph, with occasional gusts reaching 7 mph. Humidity levels may remain elevated, contributing to the muggy feel of the evening. Conditions are unlikely to change dramatically overnight, but a few brief showers could impact the late evening hours. It’s a warm, humid evening with the potential for some light rain before nightfall.

15-Day Weather Outlook for Williamstown

TomorrowTomorrow

Light thunderstorms 78°/70° 💧 None 💨 12 mph

Friday, Sep 11Fri Sep 11

Overcast 80°/71° 💧 None 💨 7 mph

Saturday, Sep 12Sat Sep 12

Light rain 82°/68° 💧 2.191 in 💨 8 mph

Sunday, Sep 13Sun Sep 13

Overcast 86°/71° 💧 0.012 in 💨 7 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 87°/70° 💧 None 💨 5 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 89°/70° 💧 0.004 in 💨 7 mph

Wednesday, Sep 16Wed Sep 16

Overcast 83°/72° 💧 0.124 in 💨 4 mph

Thursday, Sep 17Thu Sep 17

Mostly cloudy 84°/70° 💧 0.232 in 💨 8 mph

Friday, Sep 18Fri Sep 18

Light thunderstorms 74°/65° 💧 0.708 in 💨 10 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 73°/61° 💧 0.006 in 💨 7 mph

Sunday, Sep 20Sun Sep 20

Light rain 71°/57° 💧 0.038 in 💨 7 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 65°/52° 💧 0.041 in 💨 11 mph

Tuesday, Sep 22Tue Sep 22

Mostly sunny 60°/51° 💧 None 💨 11 mph

Wednesday, Sep 23Wed Sep 23

Mostly sunny 68°/48° 💧 None 💨 8 mph

Thursday, Sep 24Thu Sep 24

Mostly sunny 61°/50° 💧 None 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Williamstown

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Williamstown

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 7:00 PM

PM2.5 Fine particles Good 5,8µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 6,4µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 93,3µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 1,8µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Williamstown

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 7,7High 🙂Fair

Tomorrow UV 5,8Moderate 🙂Fair

Friday UV 5,5Moderate 🙂Fair

Saturday UV 3,9Moderate 🙂Fair

Sunday UV 6,0High 🙂Fair

Monday UV 8,0Very high —Unavailable

Tuesday UV 8,0Very high —Unavailable

Hourly UV index today

7:00 PMUV 0,2

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure. High humidity can make it feel hotter.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Williamstown

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · WILLIAMSTOWN, KENTUCKY

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 10:00 PM–11:00 PM.

99/100Best-hour score

BEST TIME TONIGHT 10:00 PM–11:00 PM Astronomical darkness: 9:27 PM–5:44 AM

☁ Cloud cover 2% Real hourly forecast for the best viewing hour.

☾ Moonlight 4% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 9° high at the best hour.

✦ Estimated visible meteors 0–1/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min24%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

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Forecast data for Williamstown were last refreshed today at 6:49 PM. The current forecast period extends through 11/09/2026 at 4:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.