What is the weather in Harrison right now?

Current weather in Harrison is clear sky.

Where can I find the hourly weather forecast for Harrison?

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

Is the weather forecast for Harrison updated regularly?

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

Now · 8:32 PM

Harrison Weather & Hourly Forecast

United States · Illinois · 62966

83°F

Clear night

Feels like: 89°F

💧 Humidity 70% 🌡 Pressure 30.21 inHg 💨 Wind 4 mph 👁 Visibility 19.2 mi ☁ Clouds 1% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Harrison

Today

9:00 PM

Clear night

83° 💧 None 💨 4 mph H 70%30.21 inHg

Tomorrow

12:00 AM

Clear night

81° 💧 None 💨 4 mph H 66%30.21 inHg

3:00 AM

Clear night

78° 💧 None 💨 4 mph H 75%30.21 inHg

6:00 AM

Clear night

76° 💧 None 💨 5 mph H 78%30.21 inHg

9:00 AM

Sunny

84° 💧 None 💨 5 mph H 63%30.24 inHg

12:00 PM

Sunny

95° 💧 0.000 in 💨 7 mph H 42%30.18 inHg

3:00 PM

Sunny

97° 💧 0.001 in 💨 5 mph H 39%30.12 inHg

6:00 PM

Strong thunderstorm

93° 💧 0.002 in 💨 6 mph H 44%30.09 inHg

9:00 PM

Mostly clear night

85° 💧 0.000 in 💨 3 mph H 62%30.12 inHg

Friday

12:00 AM

Clear night

82° 💧 None 💨 0 mph H 68%30.15 inHg

3:00 AM

Clear night

79° 💧 0.011 in 💨 2 mph H 71%30.12 inHg

6:00 AM

Mostly clear night

76° 💧 0.001 in 💨 2 mph H 85%30.12 inHg

9:00 AM

Sunny

83° 💧 None 💨 0 mph H 66%30.12 inHg

12:00 PM

Mostly sunny

93° 💧 0.041 in 💨 2 mph H 48%30.12 inHg

3:00 PM

Light thunderstorms

91° 💧 0.006 in 💨 1 mph H 52%30.06 inHg

6:00 PM

Mostly sunny

91° 💧 None 💨 3 mph H 52%30.00 inHg

Today

9:00 PM

Clear night

83° 💧 None 💨 4 mph H 70%30.21 inHg

10:00 PM

Clear night

83° 💧 None 💨 5 mph H 65%30.21 inHg

11:00 PM

Clear night

82° 💧 None 💨 5 mph H 63%30.21 inHg

Tomorrow

12:00 AM

Clear night

81° 💧 None 💨 4 mph H 66%30.21 inHg

1:00 AM

Clear night

79° 💧 None 💨 4 mph H 70%30.21 inHg

2:00 AM

Clear night

78° 💧 None 💨 4 mph H 72%30.21 inHg

3:00 AM

Clear night

78° 💧 None 💨 4 mph H 75%30.21 inHg

4:00 AM

Clear night

77° 💧 None 💨 6 mph H 76%30.21 inHg

5:00 AM

Clear night

77° 💧 None 💨 6 mph H 77%30.21 inHg

6:00 AM

Clear night

76° 💧 None 💨 5 mph H 78%30.21 inHg

7:00 AM

Sunny

76° 💧 None 💨 6 mph H 78%30.21 inHg

8:00 AM

Sunny

79° 💧 None 💨 6 mph H 72%30.24 inHg

9:00 AM

Sunny

84° 💧 None 💨 5 mph H 63%30.24 inHg

10:00 AM

Sunny

89° 💧 None 💨 6 mph H 54%30.21 inHg

11:00 AM

Sunny

93° 💧 None 💨 7 mph H 46%30.21 inHg

12:00 PM

Sunny

95° 💧 0.000 in 💨 7 mph H 42%30.18 inHg

1:00 PM

Sunny

96° 💧 0.000 in 💨 6 mph H 41%30.18 inHg

2:00 PM

Mostly sunny

96° 💧 None 💨 5 mph H 40%30.15 inHg

3:00 PM

Sunny

97° 💧 0.000 in 💨 5 mph H 39%30.12 inHg

4:00 PM

Sunny

97° 💧 0.000 in 💨 5 mph H 39%30.12 inHg

5:00 PM

Mostly sunny

95° 💧 0.001 in 💨 6 mph H 41%30.09 inHg

6:00 PM

Strong thunderstorm

93° 💧 0.001 in 💨 6 mph H 44%30.09 inHg

7:00 PM

Mostly sunny

89° 💧 0.000 in 💨 3 mph H 54%30.12 inHg

8:00 PM

Mostly clear night

87° 💧 None 💨 3 mph H 59%30.12 inHg

9:00 PM

Mostly clear night

85° 💧 None 💨 3 mph H 62%30.12 inHg

10:00 PM

Clear night

84° 💧 None 💨 1 mph H 64%30.12 inHg

11:00 PM

Clear night

83° 💧 0.000 in 💨 1 mph H 66%30.12 inHg

Friday

12:00 AM

Clear night

82° 💧 None 💨 0 mph H 68%30.15 inHg

1:00 AM

Clear night

81° 💧 None 💨 1 mph H 68%30.12 inHg

2:00 AM

Clear night

80° 💧 None 💨 1 mph H 69%30.12 inHg

3:00 AM

Clear night

79° 💧 None 💨 2 mph H 71%30.12 inHg

4:00 AM

Mostly cloudy night

78° 💧 0.001 in 💨 5 mph H 78%30.12 inHg

5:00 AM

Light rain

77° 💧 0.010 in 💨 3 mph H 81%30.12 inHg

6:00 AM

Mostly clear night

76° 💧 0.001 in 💨 2 mph H 85%30.12 inHg

7:00 AM

Sunny

77° 💧 None 💨 2 mph H 85%30.12 inHg

8:00 AM

Sunny

79° 💧 None 💨 2 mph H 79%30.12 inHg

9:00 AM

Sunny

83° 💧 None 💨 0 mph H 66%30.12 inHg

10:00 AM

Sunny

88° 💧 None 💨 2 mph H 55%30.15 inHg

11:00 AM

Sunny

90° 💧 None 💨 3 mph H 51%30.12 inHg

12:00 PM

Mostly sunny

93° 💧 0.000 in 💨 2 mph H 48%30.12 inHg

1:00 PM

Light thunderstorms

88° 💧 0.016 in 💨 6 mph H 58%30.12 inHg

2:00 PM

Light rain

91° 💧 0.024 in 💨 0 mph H 54%30.09 inHg

3:00 PM

Light thunderstorms

91° 💧 0.006 in 💨 1 mph H 52%30.06 inHg

4:00 PM

Mostly cloudy

92° 💧 None 💨 1 mph H 50%30.03 inHg

5:00 PM

Partly cloudy

92° 💧 None 💨 2 mph H 50%30.00 inHg

6:00 PM

Mostly sunny

91° 💧 None 💨 3 mph H 52%30.00 inHg

7:00 PM

Mostly sunny

87° 💧 None 💨 4 mph H 62%30.00 inHg

8:00 PM

Mostly clear night

84° 💧 None 💨 4 mph H 67%30.00 inHg

9:00 PM

Clear night

83° 💧 None 💨 4 mph H 71%30.03 inHg

10:00 PM

Clear night

82° 💧 None 💨 7 mph H 72%30.03 inHg

11:00 PM

Clear night

81° 💧 None 💨 7 mph H 74%30.03 inHg

Saturday

12:00 AM

Clear night

80° 💧 None 💨 6 mph H 77%30.00 inHg

1:00 AM

Clear night

79° 💧 None 💨 6 mph H 80%30.00 inHg

2:00 AM

Clear night

78° 💧 None 💨 5 mph H 81%30.00 inHg

3:00 AM

Clear night

78° 💧 None 💨 5 mph H 83%29.97 inHg

4:00 AM

Mostly clear night

77° 💧 None 💨 5 mph H 84%29.97 inHg

5:00 AM

Partly cloudy night

77° 💧 None 💨 4 mph H 85%29.97 inHg

6:00 AM

Mostly cloudy night

76° 💧 None 💨 4 mph H 86%29.97 inHg

7:00 AM

Mostly sunny

76° 💧 None 💨 4 mph H 86%30.00 inHg

4:00 PM

Mostly cloudy

97° 💧 None 💨 9 mph H 28%29.85 inHg

7:00 PM

Overcast night

89° 💧 None 💨 4 mph H 40%29.83 inHg

10:00 PM

Mostly cloudy night

86° 💧 None 💨 9 mph H 41%29.85 inHg

Sunday

1:00 AM

Mostly clear night

83° 💧 None 💨 9 mph H 44%29.85 inHg

4:00 AM

Mostly clear night

79° 💧 None 💨 7 mph H 49%29.85 inHg

7:00 AM

Mostly sunny

76° 💧 None 💨 3 mph H 59%29.88 inHg

10:00 AM

Sunny

88° 💧 None 💨 2 mph H 43%29.88 inHg

1:00 PM

Sunny

97° 💧 None 💨 4 mph H 30%29.85 inHg

4:00 PM

Mostly sunny

97° 💧 None 💨 4 mph H 26%29.80 inHg

7:00 PM

Partly cloudy night

90° 💧 None 💨 2 mph H 37%29.80 inHg

10:00 PM

Mostly clear night

84° 💧 None 💨 9 mph H 55%29.85 inHg

Monday

1:00 AM

Mostly clear night

79° 💧 None 💨 7 mph H 69%29.85 inHg

4:00 AM

Mostly clear night

76° 💧 None 💨 6 mph H 75%29.85 inHg

7:00 AM

Mostly sunny

74° 💧 None 💨 6 mph H 80%29.88 inHg

10:00 AM

Mostly sunny

87° 💧 None 💨 2 mph H 51%29.88 inHg

1:00 PM

Mostly sunny

96° 💧 None 💨 5 mph H 31%29.85 inHg

4:00 PM

Mostly sunny

92° 💧 None 💨 8 mph H 38%29.80 inHg

7:00 PM

Light rain

79° 💧 None 💨 9 mph H 74%29.85 inHg

10:00 PM

Mostly cloudy night

76° 💧 None 💨 5 mph H 81%29.91 inHg

Tuesday

1:00 AM

Mostly clear night

74° 💧 None 💨 4 mph H 88%29.91 inHg

4:00 AM

Partly cloudy night

71° 💧 None 💨 5 mph H 94%29.91 inHg

7:00 AM

Overcast

72° 💧 None 💨 6 mph H 88%29.97 inHg

10:00 AM

Overcast

74° 💧 None 💨 6 mph H 77%30.00 inHg

1:00 PM

Overcast

77° 💧 None 💨 5 mph H 67%30.00 inHg

7:00 PM

Mostly cloudy night

78° 💧 None 💨 10 mph H 56%30.06 inHg

Wednesday

1:00 AM

Overcast night

67° 💧 None 💨 12 mph H 71%30.09 inHg

7:00 AM

Mostly cloudy

65° 💧 None 💨 9 mph H 70%30.12 inHg

1:00 PM

Partly cloudy

62° 💧 None 💨 9 mph H 72%30.18 inHg

7:00 PM

Clear night

74° 💧 None 💨 10 mph H 44%30.18 inHg

Thursday

1:00 AM

Mostly clear night

71° 💧 None 💨 9 mph H 48%30.15 inHg

7:00 AM

Sunny

61° 💧 None 💨 5 mph H 73%30.18 inHg

1:00 PM

Partly cloudy

57° 💧 None 💨 6 mph H 85%30.21 inHg

7:00 PM

Overcast night

73° 💧 None 💨 10 mph H 47%30.15 inHg

Friday

1:00 AM

Overcast night

69° 💧 None 💨 10 mph H 58%30.15 inHg

7:00 AM

Overcast

66° 💧 None 💨 6 mph H 68%30.18 inHg

1:00 PM

Overcast

63° 💧 None 💨 8 mph H 76%30.21 inHg

7:00 PM

Overcast night

70° 💧 None 💨 10 mph H 56%30.21 inHg

Saturday

1:00 AM

Overcast night

70° 💧 None 💨 9 mph H 57%30.15 inHg

7:00 AM

Partly cloudy

66° 💧 None 💨 9 mph H 68%30.18 inHg

1:00 PM

Partly cloudy

57° 💧 None 💨 6 mph H 83%30.24 inHg

7:00 PM

Clear night

75° 💧 None 💨 10 mph H 38%30.21 inHg

Sunday

1:00 AM

Clear night

72° 💧 None 💨 8 mph H 38%30.15 inHg

7:00 AM

Sunny

62° 💧 None 💨 8 mph H 61%30.18 inHg

1:00 PM

Sunny

55° 💧 None 💨 5 mph H 83%30.21 inHg

7:00 PM

Clear night

74° 💧 None 💨 7 mph H 38%30.15 inHg

Monday

1:00 AM

Clear night

69° 💧 None 💨 6 mph H 38%30.09 inHg

7:00 AM

Sunny

59° 💧 None 💨 5 mph H 57%30.12 inHg

1:00 PM

Sunny

54° 💧 None 💨 5 mph H 74%30.15 inHg

7:00 PM

Clear night

77° 💧 None 💨 5 mph H 30%30.15 inHg

Tuesday

1:00 AM

Clear night

71° 💧 None 💨 5 mph H 35%30.09 inHg

7:00 AM

Sunny

61° 💧 None 💨 5 mph H 51%30.12 inHg

1:00 PM

Sunny

56° 💧 None 💨 5 mph H 59%30.15 inHg

7:00 PM

Clear night

82° 💧 None 💨 4 mph H 21%30.12 inHg

Wednesday

1:00 AM

Clear night

75° 💧 None 💨 7 mph H 26%30.06 inHg

7:00 AM

Sunny

64° 💧 None 💨 4 mph H 47%30.09 inHg

1:00 PM

Sunny

58° 💧 None 💨 3 mph H 65%30.12 inHg

7:00 PM

Mostly cloudy night

82° 💧 None 💨 4 mph H 26%30.09 inHg

Thursday

1:00 AM

Mostly cloudy night

76° 💧 None 💨 8 mph H 32%30.03 inHg

7:00 AM

Overcast

68° 💧 None 💨 6 mph H 58%30.12 inHg

1:00 PM

Overcast

66° 💧 None 💨 5 mph H 62%30.15 inHg

In Harrison and, more broadly, across the state of Illinois: This evening will be mostly clear with just a few clouds drifting across the sky. Temperatures are expected to remain mild to warm, settling between 80 and 82 degrees Fahrenheit. Light northeast winds will persist, blowing at around 9 mph, with occasional gusts reaching up to 15 mph. No precipitation is anticipated during the upcoming hours, making for a calm and pleasant evening. As night falls, conditions will likely remain comfortable, with temperatures gradually cooling into the low 70s. Overall, it should be a peaceful night with clear skies and gentle breezes.

15-Day Weather Outlook for Harrison

TomorrowTomorrow

Strong thunderstorm 97°/76° 💧 None 💨 7 mph

Friday, Sep 18Fri Sep 18

Light thunderstorms 93°/76° 💧 None 💨 7 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 97°/76° 💧 0.026 in 💨 9 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 97°/76° 💧 None 💨 9 mph

Monday, Sep 21Mon Sep 21

Light rain 96°/74° 💧 0.041 in 💨 9 mph

Tuesday, Sep 22Tue Sep 22

Overcast 78°/71° 💧 0.156 in 💨 10 mph

Wednesday, Sep 23Wed Sep 23

Overcast 74°/62° 💧 0.003 in 💨 12 mph

Thursday, Sep 24Thu Sep 24

Mostly sunny 73°/57° 💧 None 💨 10 mph

Friday, Sep 25Fri Sep 25

Overcast 70°/63° 💧 0.007 in 💨 10 mph

Saturday, Sep 26Sat Sep 26

Overcast 75°/57° 💧 None 💨 10 mph

Sunday, Sep 27Sun Sep 27

Sunny 74°/55° 💧 None 💨 8 mph

Monday, Sep 28Mon Sep 28

Sunny 77°/54° 💧 None 💨 6 mph

Tuesday, Sep 29Tue Sep 29

Sunny 82°/56° 💧 None 💨 5 mph

Wednesday, Sep 30Wed Sep 30

Mostly cloudy 82°/58° 💧 None 💨 7 mph

Thursday, Oct 1Thu Oct 1

Overcast 76°/66° 💧 0.001 in 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Harrison

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Harrison

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 9:00 PM

PM2.5 Fine particles Good 8,7µg/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 9,3µg/m³

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

O₃ Ozone Fair 83,5µg/m³

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

NO₂ Nitrogen dioxide Good 3,3µg/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 Harrison

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 7,2High 🙂Fair

Tomorrow UV 7,2High 😐Moderate

Friday UV 7,3High 😐Moderate

Saturday UV 7,0High 😐Moderate

Sunday UV 9,0Very high 😐Moderate

Monday UV 7,0High —Unavailable

Tuesday UV 8,0Very high —Unavailable

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.

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 Harrison

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · HARRISON, ILLINOIS

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 4:00 AM–5:00 AM.

100/100Best-hour score

BEST TIME TONIGHT 4:00 AM–5:00 AM Astronomical darkness: 8:32 PM–5:12 AM

☁ Cloud cover 0% Real hourly forecast for the best viewing hour.

☾ Moonlight 31% Waxing Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 85° high at the best hour.

✦ Estimated visible meteors 2–5/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min81%

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

Explore current conditions and forecasts for other locations.

Peregian Springs AU · Queensland · 9,532 residents Mayfield US · Kentucky · 9,868 residents Lamberton US · Minnesota · 917 residents Dalbeattie GB · Scotland · 4,160 residents Isla AU · Queensland · 213 residents Abbeville US · Louisiana · 11,003 residents Acton Bridge GB · England · 185 residents Loganholme AU · Queensland · 6,764 residents Lemon Hill US · California · 15,312 residents Wrens US · Georgia · 2,187 residents Brandermill US · Virginia · 13,730 residents Topawa US · Arizona · 166 residents Fort Erie CA · Ontario · 32,901 residents Lake Eacham AU · Queensland · 459 residents Surrey CA · British Columbia · 568,322 residents Many US · Louisiana · 2,166 residents

Forecast data for Harrison were last refreshed today at 8:32 PM. The current forecast period extends through 18/09/2026 at 6:00 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.