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Current weather in Calhoun is clear sky.

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

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

Now · 9:59 PM

Calhoun Weather & Hourly Forecast

United States · Illinois · 62419

81°F

Clear night

Feels like: 87°F

💧 Humidity 75% 🌡 Pressure 30.00 inHg 💨 Wind 5 mph 👁 Visibility 17.4 mi ☁ Clouds 6% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Calhoun

Today

10:00 PM

Clear night

81° 💧 None 💨 5 mph H 75%30.00 inHg

Tomorrow

1:00 AM

Mostly clear night

77° 💧 0.027 in 💨 4 mph H 82%29.97 inHg

4:00 AM

Thunderstorms

72° 💧 0.281 in 💨 6 mph H 97%30.00 inHg

7:00 AM

Thunderstorms

72° 💧 0.361 in 💨 5 mph H 98%29.97 inHg

10:00 AM

Thunderstorms

74° 💧 0.195 in 💨 2 mph H 96%30.03 inHg

1:00 PM

Light rain

79° 💧 0.166 in 💨 0 mph H 81%29.94 inHg

4:00 PM

Thunderstorms

74° 💧 0.450 in 💨 3 mph H 94%29.91 inHg

7:00 PM

Overcast

73° 💧 0.002 in 💨 4 mph H 96%29.91 inHg

10:00 PM

Overcast night

73° 💧 0.000 in 💨 5 mph H 97%29.94 inHg

Friday

1:00 AM

Mostly cloudy night

71° 💧 0.000 in 💨 4 mph H 98%29.94 inHg

4:00 AM

Overcast night

71° 💧 None 💨 4 mph H 98%29.94 inHg

7:00 AM

Overcast

71° 💧 0.001 in 💨 6 mph H 98%29.94 inHg

10:00 AM

Light rain

76° 💧 0.021 in 💨 7 mph H 82%29.97 inHg

1:00 PM

Light rain

80° 💧 0.026 in 💨 7 mph H 72%29.91 inHg

4:00 PM

Mostly sunny

83° 💧 0.008 in 💨 3 mph H 63%29.85 inHg

7:00 PM

Sunny

77° 💧 0.000 in 💨 3 mph H 86%29.85 inHg

Today

10:00 PM

Clear night

81° 💧 None 💨 5 mph H 75%30.00 inHg

11:00 PM

Clear night

79° 💧 None 💨 4 mph H 80%30.00 inHg

Tomorrow

12:00 AM

Clear night

78° 💧 None 💨 2 mph H 83%30.00 inHg

1:00 AM

Mostly clear night

77° 💧 0.000 in 💨 4 mph H 82%29.97 inHg

2:00 AM

Partly cloudy night

77° 💧 0.002 in 💨 3 mph H 82%29.97 inHg

3:00 AM

Light rain

73° 💧 0.025 in 💨 9 mph H 92%30.00 inHg

4:00 AM

Thunderstorms

72° 💧 0.165 in 💨 6 mph H 97%30.00 inHg

5:00 AM

Light rain

72° 💧 0.024 in 💨 3 mph H 97%29.97 inHg

6:00 AM

Light thunderstorms

72° 💧 0.093 in 💨 0 mph H 97%30.00 inHg

7:00 AM

Thunderstorms

72° 💧 0.139 in 💨 5 mph H 98%29.97 inHg

8:00 AM

Thunderstorms

73° 💧 0.158 in 💨 2 mph H 98%30.03 inHg

9:00 AM

Light thunderstorms

73° 💧 0.064 in 💨 6 mph H 97%30.00 inHg

10:00 AM

Thunderstorms

74° 💧 0.168 in 💨 2 mph H 96%30.03 inHg

11:00 AM

Light thunderstorms

76° 💧 0.016 in 💨 1 mph H 88%30.00 inHg

12:00 PM

Light rain

79° 💧 0.011 in 💨 2 mph H 80%29.97 inHg

1:00 PM

Light rain

79° 💧 0.024 in 💨 0 mph H 81%29.94 inHg

2:00 PM

Light rain

81° 💧 0.017 in 💨 1 mph H 78%29.91 inHg

3:00 PM

Thunderstorms

77° 💧 0.125 in 💨 4 mph H 88%29.91 inHg

4:00 PM

Thunderstorms

74° 💧 0.237 in 💨 3 mph H 94%29.91 inHg

5:00 PM

Thunderstorms

74° 💧 0.193 in 💨 3 mph H 95%29.88 inHg

6:00 PM

Light thunderstorms

73° 💧 0.020 in 💨 7 mph H 97%29.91 inHg

7:00 PM

Overcast

73° 💧 0.002 in 💨 4 mph H 96%29.91 inHg

8:00 PM

Overcast night

73° 💧 0.000 in 💨 5 mph H 96%29.91 inHg

9:00 PM

Overcast night

73° 💧 0.000 in 💨 5 mph H 96%29.91 inHg

10:00 PM

Overcast night

73° 💧 0.000 in 💨 5 mph H 97%29.94 inHg

11:00 PM

Mostly cloudy night

72° 💧 0.000 in 💨 4 mph H 98%29.94 inHg

Friday

12:00 AM

Mostly cloudy night

71° 💧 None 💨 3 mph H 98%29.94 inHg

1:00 AM

Mostly cloudy night

71° 💧 None 💨 4 mph H 98%29.94 inHg

2:00 AM

Partly cloudy night

71° 💧 0.000 in 💨 5 mph H 98%29.94 inHg

3:00 AM

Mostly cloudy night

71° 💧 0.000 in 💨 5 mph H 98%29.91 inHg

4:00 AM

Overcast night

71° 💧 None 💨 4 mph H 98%29.94 inHg

5:00 AM

Overcast night

71° 💧 None 💨 6 mph H 98%29.94 inHg

6:00 AM

Overcast night

71° 💧 None 💨 6 mph H 98%29.94 inHg

7:00 AM

Overcast

71° 💧 None 💨 6 mph H 98%29.94 inHg

8:00 AM

Overcast

72° 💧 None 💨 6 mph H 95%29.97 inHg

9:00 AM

Overcast

73° 💧 0.001 in 💨 7 mph H 90%29.97 inHg

10:00 AM

Light rain

76° 💧 0.004 in 💨 7 mph H 82%29.97 inHg

11:00 AM

Light rain

77° 💧 0.005 in 💨 7 mph H 80%29.97 inHg

12:00 PM

Light rain

78° 💧 0.012 in 💨 8 mph H 76%29.94 inHg

1:00 PM

Light rain

80° 💧 0.005 in 💨 7 mph H 72%29.91 inHg

2:00 PM

Light rain

81° 💧 0.010 in 💨 6 mph H 68%29.91 inHg

3:00 PM

Light rain

83° 💧 0.010 in 💨 5 mph H 65%29.88 inHg

4:00 PM

Mostly sunny

83° 💧 0.003 in 💨 3 mph H 63%29.85 inHg

5:00 PM

Mostly sunny

83° 💧 0.003 in 💨 3 mph H 63%29.85 inHg

6:00 PM

Mostly sunny

81° 💧 0.002 in 💨 4 mph H 74%29.85 inHg

7:00 PM

Sunny

77° 💧 None 💨 3 mph H 86%29.85 inHg

8:00 PM

Clear night

75° 💧 0.000 in 💨 3 mph H 90%29.85 inHg

9:00 PM

Clear night

74° 💧 None 💨 3 mph H 94%29.88 inHg

10:00 PM

Clear night

73° 💧 None 💨 3 mph H 95%29.88 inHg

11:00 PM

Clear night

73° 💧 None 💨 4 mph H 96%29.91 inHg

Saturday

12:00 AM

Clear night

73° 💧 None 💨 5 mph H 96%29.88 inHg

1:00 AM

Clear night

73° 💧 None 💨 6 mph H 97%29.88 inHg

2:00 AM

Clear night

72° 💧 0.000 in 💨 6 mph H 98%29.88 inHg

3:00 AM

Partly cloudy night

72° 💧 None 💨 6 mph H 98%29.88 inHg

4:00 AM

Mostly clear night

72° 💧 None 💨 5 mph H 99%29.88 inHg

5:00 AM

Clear night

71° 💧 None 💨 5 mph H 98%29.88 inHg

6:00 AM

Clear night

70° 💧 None 💨 5 mph H 98%29.88 inHg

7:00 AM

Sunny

70° 💧 None 💨 5 mph H 98%29.91 inHg

4:00 PM

Mostly sunny

87° 💧 None 💨 5 mph H 58%29.85 inHg

7:00 PM

Mostly sunny

81° 💧 None 💨 1 mph H 76%29.91 inHg

10:00 PM

Mostly cloudy night

76° 💧 None 💨 6 mph H 92%29.97 inHg

Sunday

1:00 AM

Clear night

74° 💧 None 💨 4 mph H 96%29.97 inHg

4:00 AM

Clear night

71° 💧 None 💨 3 mph H 99%29.97 inHg

7:00 AM

Mostly sunny

72° 💧 None 💨 5 mph H 97%30.03 inHg

10:00 AM

Mostly sunny

79° 💧 None 💨 5 mph H 83%30.06 inHg

1:00 PM

Mostly sunny

84° 💧 None 💨 4 mph H 68%30.03 inHg

4:00 PM

Mostly sunny

85° 💧 None 💨 4 mph H 61%30.00 inHg

7:00 PM

Sunny

80° 💧 None 💨 2 mph H 77%30.00 inHg

10:00 PM

Mostly clear night

74° 💧 None 💨 3 mph H 87%30.03 inHg

Monday

1:00 AM

Clear night

72° 💧 None 💨 4 mph H 84%30.06 inHg

4:00 AM

Mostly clear night

69° 💧 None 💨 6 mph H 86%30.06 inHg

7:00 AM

Partly cloudy

68° 💧 None 💨 7 mph H 81%30.09 inHg

10:00 AM

Sunny

77° 💧 None 💨 6 mph H 72%30.12 inHg

1:00 PM

Sunny

85° 💧 None 💨 5 mph H 64%30.06 inHg

4:00 PM

Mostly sunny

87° 💧 None 💨 6 mph H 59%30.00 inHg

7:00 PM

Sunny

82° 💧 None 💨 6 mph H 73%30.00 inHg

10:00 PM

Clear night

79° 💧 None 💨 9 mph H 81%30.00 inHg

Tuesday

1:00 AM

Clear night

77° 💧 None 💨 8 mph H 84%30.03 inHg

4:00 AM

Clear night

75° 💧 None 💨 8 mph H 84%30.03 inHg

7:00 AM

Sunny

74° 💧 None 💨 8 mph H 84%30.06 inHg

10:00 AM

Sunny

83° 💧 None 💨 8 mph H 70%30.09 inHg

1:00 PM

Mostly sunny

91° 💧 None 💨 8 mph H 50%30.06 inHg

7:00 PM

Moderate rain

80° 💧 None 💨 8 mph H 86%30.03 inHg

Wednesday

1:00 AM

Mostly cloudy night

78° 💧 None 💨 4 mph H 92%30.03 inHg

7:00 AM

Mostly sunny

74° 💧 None 💨 5 mph H 98%30.09 inHg

1:00 PM

Overcast

71° 💧 None 💨 8 mph H 85%30.15 inHg

7:00 PM

Partly cloudy night

79° 💧 None 💨 5 mph H 72%30.15 inHg

Thursday

1:00 AM

Clear night

76° 💧 None 💨 6 mph H 80%30.09 inHg

7:00 AM

Mostly sunny

71° 💧 None 💨 3 mph H 94%30.09 inHg

1:00 PM

Overcast

73° 💧 None 💨 4 mph H 94%30.06 inHg

7:00 PM

Light rain

75° 💧 None 💨 4 mph H 94%30.03 inHg

Friday

1:00 AM

Light rain

74° 💧 None 💨 6 mph H 97%29.97 inHg

7:00 AM

Partly cloudy

68° 💧 None 💨 9 mph H 97%30.03 inHg

1:00 PM

Sunny

64° 💧 None 💨 8 mph H 97%30.09 inHg

7:00 PM

Partly cloudy night

74° 💧 None 💨 8 mph H 67%30.09 inHg

Saturday

1:00 AM

Mostly clear night

70° 💧 None 💨 5 mph H 75%30.03 inHg

7:00 AM

Mostly sunny

63° 💧 None 💨 7 mph H 84%30.03 inHg

1:00 PM

Sunny

59° 💧 None 💨 6 mph H 95%30.06 inHg

7:00 PM

Mostly clear night

73° 💧 None 💨 9 mph H 52%30.06 inHg

Sunday

1:00 AM

Clear night

67° 💧 None 💨 8 mph H 59%30.00 inHg

7:00 AM

Sunny

59° 💧 None 💨 4 mph H 86%30.03 inHg

1:00 PM

Sunny

57° 💧 None 💨 7 mph H 88%30.09 inHg

7:00 PM

Mostly clear night

73° 💧 None 💨 10 mph H 60%30.09 inHg

Monday

1:00 AM

Clear night

67° 💧 None 💨 7 mph H 66%30.09 inHg

7:00 AM

Mostly cloudy

59° 💧 None 💨 7 mph H 75%30.15 inHg

1:00 PM

Partly cloudy

54° 💧 None 💨 10 mph H 77%30.21 inHg

7:00 PM

Mostly cloudy night

67° 💧 None 💨 10 mph H 57%30.21 inHg

Tuesday

1:00 AM

Overcast night

64° 💧 None 💨 10 mph H 61%30.18 inHg

7:00 AM

Overcast

60° 💧 None 💨 12 mph H 64%30.24 inHg

1:00 PM

Mostly cloudy

55° 💧 None 💨 10 mph H 68%30.30 inHg

7:00 PM

Clear night

65° 💧 None 💨 9 mph H 54%30.30 inHg

Wednesday

1:00 AM

Clear night

61° 💧 None 💨 7 mph H 65%30.27 inHg

7:00 AM

Sunny

53° 💧 None 💨 6 mph H 78%30.30 inHg

1:00 PM

Sunny

49° 💧 None 💨 7 mph H 82%30.33 inHg

7:00 PM

Clear night

67° 💧 None 💨 5 mph H 51%30.30 inHg

Thursday

1:00 AM

Partly cloudy night

62° 💧 None 💨 4 mph H 66%30.21 inHg

7:00 AM

Partly cloudy

55° 💧 None 💨 4 mph H 83%30.18 inHg

1:00 PM

Overcast

55° 💧 None 💨 5 mph H 89%30.12 inHg

In Calhoun and, more broadly, across the state of Illinois: Tonight, temperatures will remain mild to warm, ranging from 74 to 75 degrees Fahrenheit, with mostly cloudy skies overhead. Light northwest winds will continue, with speeds up to 7 mph, occasionally gusting to 16 mph. No precipitation is expected through the evening and into the early night hours, so dry conditions will persist. The breeze may bring some slight movement to the clouds, but overall, skies will stay mostly cloudy. Temperatures are likely to stay steady or gradually decrease slightly later in the night. It should be a relatively calm and dry evening, making for a comfortable night ahead.

15-Day Weather Outlook for Calhoun

Friday, Sep 11Fri Sep 11

Overcast 83°/71° 💧 None 💨 8 mph

Saturday, Sep 12Sat Sep 12

Partly cloudy 87°/70° 💧 1.660 in 💨 6 mph

Sunday, Sep 13Sun Sep 13

Mostly sunny 85°/71° 💧 0.005 in 💨 6 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 87°/68° 💧 0.007 in 💨 7 mph

Tuesday, Sep 15Tue Sep 15

Mostly sunny 91°/74° 💧 0.001 in 💨 9 mph

Wednesday, Sep 16Wed Sep 16

Moderate rain 80°/71° 💧 0.097 in 💨 8 mph

Thursday, Sep 17Thu Sep 17

Overcast 79°/71° 💧 None 💨 6 mph

Friday, Sep 18Fri Sep 18

Light rain 75°/64° 💧 0.937 in 💨 9 mph

Saturday, Sep 19Sat Sep 19

Partly cloudy 74°/59° 💧 0.020 in 💨 8 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 73°/57° 💧 None 💨 9 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 73°/54° 💧 0.003 in 💨 10 mph

Tuesday, Sep 22Tue Sep 22

Mostly cloudy 67°/55° 💧 None 💨 12 mph

Wednesday, Sep 23Wed Sep 23

Sunny 65°/49° 💧 None 💨 9 mph

Thursday, Sep 24Thu Sep 24

Partly cloudy 67°/55° 💧 None 💨 5 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Calhoun

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Calhoun

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 10:00 PM

PM2.5 Fine particles Good 9,5µg/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 10,5µg/m³

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

O₃ Ozone Fair 77,4µg/m³

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

NO₂ Nitrogen dioxide Good 4,4µg/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 Calhoun

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 6,0High 🙂Fair

Friday UV 5,4Moderate 😊Good

Saturday UV 7,4High 🙂Fair

Sunday UV 6,3High 😐Moderate

Monday UV 9,0Very high —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 Calhoun

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · CALHOUN, ILLINOIS

Tonight's Stargazing & Shooting Stars

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

96/100Best-hour score

BEST TIME TONIGHT 10:00 PM–11:00 PM Astronomical darkness: 8:41 PM–4:58 AM

☁ Cloud cover 6% Real hourly forecast for the best viewing hour.

☾ Moonlight 3% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 16° high at the best hour.

✦ Estimated visible meteors 0–2/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min36%

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 Calhoun were last refreshed today at 9:59 PM. The current forecast period extends through 11/09/2026 at 7:00 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.