What is the weather in Williamson right now?

Current weather in Williamson is clear sky.

Where can I find the hourly weather forecast for Williamson?

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

Is the weather forecast for Williamson updated regularly?

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

Now · 7:16 PM

Williamson Weather & Hourly Forecast

United States · Illinois · 62088

79°F

Sunny

Feels like: 79°F

💧 Humidity 56% 🌡 Pressure 30.06 inHg 💨 Wind 3 mph 👁 Visibility 6.2 mi ☁ Clouds 8% ☀️ UV index 7.0 · High 🌅 Sunrise 6:24 AM 🌇 Sunset 7:36 PM

Hourly Forecast for Williamson

Today

8:00 PM

Clear night

79° 💧 None 💨 3 mph H 56%30.06 inHg

11:00 PM

Partly cloudy night

73° 💧 None 💨 8 mph H 67%30.09 inHg

Tomorrow

2:00 AM

Mostly cloudy night

66° 💧 None 💨 8 mph H 79%30.09 inHg

5:00 AM

Mostly cloudy night

64° 💧 None 💨 7 mph H 86%30.09 inHg

8:00 AM

Overcast

69° 💧 None 💨 5 mph H 82%30.12 inHg

11:00 AM

Overcast

83° 💧 None 💨 8 mph H 68%30.12 inHg

2:00 PM

Overcast

88° 💧 None 💨 9 mph H 57%30.03 inHg

5:00 PM

Overcast

88° 💧 None 💨 7 mph H 58%30.00 inHg

8:00 PM

Overcast night

78° 💧 None 💨 9 mph H 64%29.97 inHg

11:00 PM

Mostly cloudy night

75° 💧 None 💨 9 mph H 64%30.00 inHg

Sunday

2:00 AM

Mostly cloudy night

72° 💧 None 💨 9 mph H 59%29.97 inHg

5:00 AM

Mostly cloudy night

70° 💧 0.00 in 💨 9 mph H 59%29.97 inHg

8:00 AM

Overcast

70° 💧 None 💨 7 mph H 70%30.00 inHg

11:00 AM

Mostly cloudy

83° 💧 None 💨 13 mph H 50%30.00 inHg

2:00 PM

Overcast

92° 💧 None 💨 12 mph H 41%29.94 inHg

5:00 PM

Overcast

90° 💧 None 💨 10 mph H 46%29.88 inHg

Today

8:00 PM

Clear night

79° 💧 None 💨 3 mph H 56%30.06 inHg

9:00 PM

Clear night

78° 💧 None 💨 2 mph H 58%30.06 inHg

10:00 PM

Mostly clear night

76° 💧 None 💨 7 mph H 60%30.09 inHg

11:00 PM

Partly cloudy night

73° 💧 None 💨 8 mph H 67%30.09 inHg

Tomorrow

12:00 AM

Partly cloudy night

70° 💧 None 💨 7 mph H 74%30.09 inHg

1:00 AM

Partly cloudy night

67° 💧 None 💨 8 mph H 79%30.09 inHg

2:00 AM

Mostly cloudy night

66° 💧 None 💨 8 mph H 79%30.09 inHg

3:00 AM

Mostly cloudy night

65° 💧 None 💨 6 mph H 82%30.09 inHg

4:00 AM

Partly cloudy night

64° 💧 None 💨 7 mph H 85%30.09 inHg

5:00 AM

Mostly cloudy night

64° 💧 None 💨 7 mph H 86%30.09 inHg

6:00 AM

Mostly cloudy night

64° 💧 None 💨 6 mph H 87%30.12 inHg

7:00 AM

Mostly cloudy

66° 💧 None 💨 6 mph H 86%30.12 inHg

8:00 AM

Overcast

69° 💧 None 💨 5 mph H 82%30.12 inHg

9:00 AM

Overcast

74° 💧 None 💨 7 mph H 76%30.12 inHg

10:00 AM

Overcast

79° 💧 None 💨 8 mph H 70%30.12 inHg

11:00 AM

Overcast

83° 💧 None 💨 8 mph H 68%30.12 inHg

12:00 PM

Overcast

86° 💧 None 💨 9 mph H 65%30.09 inHg

1:00 PM

Overcast

86° 💧 None 💨 9 mph H 61%30.06 inHg

2:00 PM

Overcast

88° 💧 None 💨 9 mph H 57%30.03 inHg

3:00 PM

Overcast

87° 💧 None 💨 6 mph H 64%30.03 inHg

4:00 PM

Overcast

88° 💧 None 💨 8 mph H 59%30.00 inHg

5:00 PM

Overcast

88° 💧 None 💨 7 mph H 58%30.00 inHg

6:00 PM

Overcast

85° 💧 None 💨 9 mph H 66%29.97 inHg

7:00 PM

Overcast

81° 💧 None 💨 9 mph H 72%29.97 inHg

8:00 PM

Overcast night

78° 💧 None 💨 9 mph H 64%29.97 inHg

9:00 PM

Overcast night

77° 💧 None 💨 10 mph H 62%29.97 inHg

10:00 PM

Mostly cloudy night

76° 💧 None 💨 10 mph H 64%29.97 inHg

11:00 PM

Mostly cloudy night

75° 💧 None 💨 9 mph H 64%30.00 inHg

Sunday

12:00 AM

Mostly cloudy night

74° 💧 None 💨 8 mph H 63%29.97 inHg

1:00 AM

Mostly cloudy night

73° 💧 None 💨 8 mph H 61%29.97 inHg

2:00 AM

Mostly cloudy night

72° 💧 None 💨 9 mph H 59%29.97 inHg

3:00 AM

Mostly cloudy night

72° 💧 None 💨 10 mph H 57%29.97 inHg

4:00 AM

Mostly cloudy night

71° 💧 None 💨 9 mph H 57%29.97 inHg

5:00 AM

Mostly cloudy night

70° 💧 None 💨 9 mph H 59%29.97 inHg

6:00 AM

Mostly cloudy night

69° 💧 None 💨 6 mph H 61%29.97 inHg

7:00 AM

Light rain

72° 💧 0.00 in 💨 7 mph H 65%30.00 inHg

8:00 AM

Overcast

70° 💧 None 💨 7 mph H 70%30.00 inHg

9:00 AM

Overcast

74° 💧 None 💨 9 mph H 66%30.00 inHg

10:00 AM

Overcast

79° 💧 None 💨 11 mph H 57%30.00 inHg

11:00 AM

Mostly cloudy

83° 💧 None 💨 13 mph H 50%30.00 inHg

12:00 PM

Mostly cloudy

87° 💧 None 💨 14 mph H 45%29.97 inHg

1:00 PM

Overcast

90° 💧 None 💨 14 mph H 43%29.94 inHg

2:00 PM

Overcast

92° 💧 None 💨 12 mph H 41%29.94 inHg

3:00 PM

Overcast

93° 💧 None 💨 12 mph H 39%29.91 inHg

4:00 PM

Overcast

92° 💧 None 💨 12 mph H 40%29.88 inHg

5:00 PM

Overcast

90° 💧 None 💨 10 mph H 46%29.88 inHg

6:00 PM

Overcast

86° 💧 None 💨 9 mph H 53%29.88 inHg

7:00 PM

Overcast

82° 💧 None 💨 10 mph H 52%29.88 inHg

8:00 PM

Mostly cloudy night

82° 💧 None 💨 9 mph H 41%29.88 inHg

9:00 PM

Mostly cloudy night

81° 💧 None 💨 10 mph H 40%29.88 inHg

10:00 PM

Mostly cloudy night

80° 💧 None 💨 9 mph H 41%29.88 inHg

11:00 PM

Mostly cloudy night

79° 💧 None 💨 9 mph H 42%29.88 inHg

Monday

12:00 AM

Mostly cloudy night

78° 💧 None 💨 10 mph H 43%29.88 inHg

1:00 AM

Mostly cloudy night

78° 💧 None 💨 10 mph H 45%29.91 inHg

2:00 AM

Partly cloudy night

77° 💧 None 💨 9 mph H 48%29.88 inHg

3:00 AM

Mostly clear night

76° 💧 None 💨 9 mph H 50%29.88 inHg

4:00 AM

Mostly clear night

76° 💧 None 💨 9 mph H 53%29.91 inHg

5:00 AM

Mostly clear night

75° 💧 None 💨 9 mph H 55%29.91 inHg

6:00 AM

Mostly clear night

74° 💧 None 💨 9 mph H 56%29.91 inHg

7:00 AM

Mostly sunny

73° 💧 None 💨 9 mph H 62%29.94 inHg

8:00 AM

Overcast

75° 💧 None 💨 9 mph H 69%29.94 inHg

9:00 AM

Mostly cloudy

80° 💧 None 💨 11 mph H 64%29.94 inHg

10:00 AM

Mostly cloudy

85° 💧 None 💨 11 mph H 56%29.94 inHg

11:00 AM

Mostly cloudy

91° 💧 None 💨 11 mph H 45%29.94 inHg

12:00 PM

Mostly cloudy

94° 💧 None 💨 11 mph H 39%29.94 inHg

1:00 PM

Mostly cloudy

96° 💧 None 💨 10 mph H 36%29.91 inHg

2:00 PM

Partly cloudy

99° 💧 None 💨 9 mph H 33%29.91 inHg

3:00 PM

Mostly sunny

100° 💧 None 💨 8 mph H 31%29.88 inHg

4:00 PM

Mostly sunny

101° 💧 None 💨 6 mph H 35%29.88 inHg

5:00 PM

Mostly sunny

100° 💧 None 💨 5 mph H 40%29.85 inHg

6:00 PM

Mostly sunny

95° 💧 None 💨 6 mph H 48%29.85 inHg

7:00 PM

Partly cloudy

89° 💧 None 💨 7 mph H 53%29.85 inHg

8:00 PM

Partly cloudy night

87° 💧 None 💨 8 mph H 46%29.88 inHg

9:00 PM

Mostly cloudy night

86° 💧 None 💨 9 mph H 41%29.88 inHg

10:00 PM

Mostly cloudy night

85° 💧 None 💨 9 mph H 42%29.91 inHg

11:00 PM

Mostly cloudy night

84° 💧 None 💨 10 mph H 42%29.91 inHg

Tuesday

12:00 AM

Mostly cloudy night

84° 💧 None 💨 10 mph H 43%29.91 inHg

1:00 AM

Overcast night

83° 💧 None 💨 11 mph H 43%29.91 inHg

2:00 AM

Overcast night

83° 💧 None 💨 10 mph H 43%29.91 inHg

3:00 AM

Overcast night

81° 💧 None 💨 8 mph H 46%29.91 inHg

4:00 AM

Overcast night

80° 💧 None 💨 8 mph H 48%29.91 inHg

5:00 AM

Overcast night

79° 💧 None 💨 8 mph H 50%29.94 inHg

6:00 AM

Overcast night

78° 💧 None 💨 8 mph H 52%29.94 inHg

7:00 AM

Overcast

76° 💧 None 💨 7 mph H 58%29.97 inHg

8:00 AM

Mostly cloudy

78° 💧 None 💨 7 mph H 64%30.00 inHg

9:00 AM

Partly cloudy

83° 💧 None 💨 8 mph H 60%30.00 inHg

10:00 AM

Partly cloudy

88° 💧 None 💨 10 mph H 50%30.00 inHg

11:00 AM

Mostly sunny

92° 💧 None 💨 11 mph H 42%30.00 inHg

12:00 PM

Mostly sunny

95° 💧 None 💨 10 mph H 38%29.97 inHg

1:00 PM

Mostly sunny

98° 💧 None 💨 9 mph H 34%29.97 inHg

2:00 PM

Sunny

99° 💧 None 💨 8 mph H 32%29.94 inHg

3:00 PM

Sunny

100° 💧 None 💨 7 mph H 31%29.91 inHg

4:00 PM

Sunny

100° 💧 None 💨 7 mph H 34%29.88 inHg

5:00 PM

Sunny

98° 💧 None 💨 7 mph H 40%29.88 inHg

6:00 PM

Sunny

93° 💧 None 💨 8 mph H 50%29.88 inHg

7:00 PM

Sunny

87° 💧 None 💨 9 mph H 51%29.91 inHg

In Williamson and, more broadly, across the state of Illinois: Clear skies will continue through the evening, with temperatures remaining mild to warm, ranging from 77 to 80 degrees Fahrenheit. Light eastward winds will persist, with maximum speeds around 7 mph and occasional gusts reaching up to 9 mph. No precipitation is expected overnight, so conditions will remain dry and calm. It should be a pleasant evening with comfortable temperatures and gentle breezes.

15-Day Weather Outlook for Williamson

TomorrowTomorrow

Overcast 88°/64° 💧 None 💨 10 mph

Sunday, Aug 30Sun Aug 30

Light rain 93°/69° 💧 0.00 in 💨 14 mph

Monday, Aug 31Mon Aug 31

Mostly cloudy 101°/73° 💧 None 💨 11 mph

Tuesday, Sep 1Tue Sep 1

Mostly sunny 100°/76° 💧 None 💨 11 mph

Wednesday, Sep 2Wed Sep 2

Sunny 100°/76° 💧 None 💨 12 mph

Thursday, Sep 3Thu Sep 3

Mostly cloudy 102°/81° 💧 None 💨 9 mph

Friday, Sep 4Fri Sep 4

Sunny 102°/79° 💧 None 💨 11 mph

Saturday, Sep 5Sat Sep 5

Light rain 101°/76° 💧 0.02 in 💨 17 mph

Sunday, Sep 6Sun Sep 6

Mostly cloudy 99°/76° 💧 None 💨 14 mph

Monday, Sep 7Mon Sep 7

Light rain 90°/69° 💧 0.07 in 💨 8 mph

Tuesday, Sep 8Tue Sep 8

Mostly sunny 106°/71° 💧 None 💨 12 mph

Wednesday, Sep 9Wed Sep 9

Sunny 109°/82° 💧 None 💨 9 mph

Thursday, Sep 10Thu Sep 10

Light rain 107°/79° 💧 0.13 in 💨 13 mph

Friday, Sep 11Fri Sep 11

Light rain 88°/69° 💧 0.12 in 💨 15 mph

Saturday, Sep 12Sat Sep 12

Sunny 85°/58° 💧 None 💨 10 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Williamson

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Williamson

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 8:00 PM

PM2.5 Fine particles Good 6,5µg/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 7,1µg/m³

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

O₃ Ozone Fair 80,9µg/m³

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

NO₂ Nitrogen dioxide Good 4,5µg/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 Williamson

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 8,0Very high 🙂Fair

Tomorrow UV 7,0High 😐Moderate

Sunday UV 8,0Very high 😐Moderate

Monday UV 8,0Very high 😐Moderate

Tuesday UV 9,0Very high 🙂Fair

Wednesday UV 9,0Very high —Unavailable

Thursday UV 9,0Very high —Unavailable

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

Very high UV risk

Use SPF 50+ sunscreen, a hat and sunglasses. Seek shade and limit exposure around midday.

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.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for Williamson

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

Internal PR simulation: 3.39 Population: 160

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Forecast data for Williamson were last refreshed today at 7:10 PM. The current forecast period extends through 30/08/2026 at 5:00 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.