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Calvin IL Weather - Clear - 77°F
Clear
77°F
Updated 2:51 am
Feels Like 82°F
Humidity 80%
Wind N 0 mph
Barometer  29.92 in
Dew Point 71°F
Calvin IL Weather - Clear - 25°C
Clear
25°C
Updated 2:51 am
Feels Like 28°C
Humidity 80%
Wind N 0 km/h
Barometer  101.3 kPa
Dew Point 22°C
Calvin, IL Weather and Current Conditionscalvin il weather forecast

Calvin, IL Weather Forecast

Calvin Illinois WeatherCalvin, Illinois Weather Weather Forecast
14 Day API Calvin, IL Weather Forecast. Note: Our 7 day Calvin, Illinois weather forecast is our most reliable, and specific forecast. This model should only be used as a probable scenario. Forecasting more than 7 days ahead is challenging.
Calvin, IL Weather Forecast Dated: 251 AM Sun Sep 06 2026
Expect a hot stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Sunday, September 6, 2026

Mid-Morning
Calvin Weather - 2026-09-06 - Morning - Sunny
78°F 25°C
Sunny
Mid-Afternoon
Calvin Weather - 2026-09-06 - Afternoon - Sunny
88°F 31°C
Sunny
Early-Evening
Calvin Weather - 2026-09-06 - Evening - Sunny
79°F 26°C
Sunny
Warm and summery near 88°F 31°C, partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds turning from the NE to the ENE at 11 mph 18 km/h. Gusts up to 22 mph 34 km/h.

Monday, September 7, 2026

Mid-Morning
Calvin Weather - 2026-09-07 - Morning - Sunny
71°F 22°C
Sunny
Mid-Afternoon
Calvin Weather - 2026-09-07 - Afternoon - Sunny
88°F 31°C
Sunny
Early-Evening
Calvin Weather - 2026-09-07 - Evening - Partly Cloudy
80°F 26°C
Partly Cloudy
Balmy with temperatures reaching 88°F 31°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds blowing from the ENE at 10 mph 15 km/h.

Tuesday, September 8, 2026

Mid-Morning
Calvin Weather - 2026-09-08 - Morning - Sunny
78°F 26°C
Sunny
Mid-Afternoon
Calvin Weather - 2026-09-08 - Afternoon - Sunny
94°F 35°C
Sunny
Early-Evening
Calvin Weather - 2026-09-08 - Evening - Sunny
88°F 31°C
Sunny
Sizzling hot with 94°F 35°C, sunny throughout the day, with lower humidity and steady pressure. Winds moving from the S to the SSE at 11 mph 17 km/h.

Wednesday, September 9, 2026

Mid-Morning
Calvin Weather - 2026-09-09 - Morning - Sunny
84°F 29°C
Sunny
Mid-Afternoon
Calvin Weather - 2026-09-09 - Afternoon - Cloudy
103°F 39°C
Cloudy
Early-Evening
Calvin Weather - 2026-09-09 - Evening - Overcast
88°F 31°C
Overcast
Dangerously hot with a high of 103°F 39°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and barometric pressure falling. Winds easing from SSW 16 mph 26 km/h to NW 6 mph 11 km/h.

Thursday, September 10, 2026

Mid-Morning
Calvin Weather - 2026-09-10 - Morning - Overcast
75°F 24°C
Overcast
Mid-Afternoon
Calvin Weather - 2026-09-10 - Afternoon - Sunny
87°F 31°C
Sunny
Early-Evening
Calvin Weather - 2026-09-10 - Evening - Cloudy
75°F 24°C
Cloudy
Quite warm reaching 87°F 31°C, feeling like 91°F 33°C during peak afternoon, overcast in the morning, partly cloudy in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds shifting from the SW to the NE at 14 mph 22 km/h. Gusts up to 25 mph 40 km/h.

Friday, September 11, 2026

Mid-Morning
Calvin Weather - 2026-09-11 - Morning - Cloudy
67°F 19°C
Cloudy
Mid-Afternoon
Calvin Weather - 2026-09-11 - Afternoon - Overcast
79°F 26°C
Overcast
Early-Evening
Calvin Weather - 2026-09-11 - Evening - Overcast
75°F 24°C
Overcast
Pleasant near 79°F 26°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds E at 8 mph 13 km/h.

Saturday, September 12, 2026

Mid-Morning
Calvin Weather - 2026-09-12 - Morning - Cloudy
71°F 22°C
Cloudy
Mid-Afternoon
Calvin Weather - 2026-09-12 - Afternoon - Partly Cloudy
85°F 29°C
Partly Cloudy
Early-Evening
Calvin Weather - 2026-09-12 - Evening - Overcast
80°F 27°C
Overcast
Balmy with temperatures reaching 85°F 29°C, partly cloudy in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds switching from the E to the SE at 6 mph 10 km/h.

Sunday, September 13, 2026

Mid-Morning
Calvin Weather - 2026-09-13 - Morning - Light Fog
80°F 27°C
Light Fog
Mid-Afternoon
Calvin Weather - 2026-09-13 - Afternoon - Sunny
96°F 36°C
Sunny
Early-Evening
Calvin Weather - 2026-09-13 - Evening - Cloudy
87°F 31°C
Cloudy
Hot and sweltering around 96°F 36°C (heat index 100°F 38°C), sunny in the morning, partly cloudy in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds moving from the SSW to the SW at 13 mph 21 km/h. Gusts up to 26 mph 42 km/h.

Monday, September 14, 2026

Mid-Morning
Calvin Weather - 2026-09-14 - Morning - Light Showers
72°F 22°C
Light Showers
Mid-Afternoon
Calvin Weather - 2026-09-14 - Afternoon - Partly Cloudy
80°F 27°C
Partly Cloudy
Early-Evening
Calvin Weather - 2026-09-14 - Evening - Overcast
73°F 23°C
Overcast
Warm temperatures up to 80°F 27°C, morning showers, giving way to clearing skies, with lower humidity and steady pressure. Winds swinging from the NNE to the NE at 11 mph 18 km/h. Gusts up to 23 mph 37 km/h.

Tuesday, September 15, 2026

Mid-Morning
Calvin Weather - 2026-09-15 - Morning - Sunny
62°F 16°C
Sunny
Mid-Afternoon
Calvin Weather - 2026-09-15 - Afternoon - Sunny
79°F 26°C
Sunny
Early-Evening
Calvin Weather - 2026-09-15 - Evening - Sunny
71°F 22°C
Sunny
Mild with a high of 79°F 26°C, sunny throughout the day, with lower humidity and steady pressure.

Wednesday, September 16, 2026

Mid-Morning
Calvin Weather - 2026-09-16 - Morning - Sunny
68°F 20°C
Sunny
Mid-Afternoon
Calvin Weather - 2026-09-16 - Afternoon - Sunny
86°F 30°C
Sunny
Early-Evening
Calvin Weather - 2026-09-16 - Evening - Sunny
79°F 26°C
Sunny
Warm and summery near 86°F 30°C, sunny through the afternoon, turning overcast this evening, with lower humidity and barometric pressure falling.

Thursday, September 17, 2026

Mid-Morning
Calvin Weather - 2026-09-17 - Morning - Overcast
80°F 27°C
Overcast
Mid-Afternoon
Calvin Weather - 2026-09-17 - Afternoon - Overcast
95°F 35°C
Overcast
Early-Evening
Calvin Weather - 2026-09-17 - Evening - Overcast
88°F 32°C
Overcast
Very hot with a high of 95°F 35°C, feeling closer to 99°F 37°C in the humidity, partly cloudy in the morning, overcast in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds out of the S at 11 mph 18 km/h. Gusts up to 24 mph 39 km/h.

Friday, September 18, 2026

Mid-Morning
Calvin Weather - 2026-09-18 - Morning - Partly Cloudy
84°F 29°C
Partly Cloudy
Mid-Afternoon
Calvin Weather - 2026-09-18 - Afternoon - Scattered Showers
98°F 37°C
Scattered Showers
Early-Evening
Calvin Weather - 2026-09-18 - Evening - Cloudy
90°F 33°C
Cloudy
Sizzling hot near 98°F 37°C with a heat index reaching 102°F 39°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds turning from the SW to the SSW at 10 mph 16 km/h.

Saturday, September 19, 2026

Mid-Morning
Calvin Weather - 2026-09-19 - Morning - Sunny
85°F 30°C
Sunny
Mid-Afternoon
Calvin Weather - 2026-09-19 - Afternoon - Sunny
97°F 36°C
Sunny
Early-Evening
Calvin Weather - 2026-09-19 - Evening - Cloudy
90°F 32°C
Cloudy
Hot and sweltering around 97°F 36°C (heat index 100°F 38°C), sunny in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the SSW to the SSE at 9 mph 14 km/h.

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Weather by the Numbers

Sun, 6th
Calvin IL Weather - Sunday, Sep 6, 2026 - Sunny
Hi: 88°F 31°C
Lo: 69°F 21°C
Sunrise 06:26 AM
Sunset 07:14 PM
Wind ENE 13 mph21 km/h
Dew Point 59°F15°C
uv Index 6
Barometric Pressure 29.97 in1015 mb
POP 1% *
Humidity 43%
Mon, 7th
Calvin IL Weather - Monday, Sep 7, 2026 - Partly Cloudy
Hi: 88°F 31°C
Lo: 63°F 17°C
Sunrise 06:27 AM
Sunset 07:12 PM
Wind ENE 10 mph16 km/h
Dew Point 52°F11°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 4% *
Humidity 35%
Tue, 8th
Calvin IL Weather - Tuesday, Sep 8, 2026 - Sunny
Hi: 95°F 35°C
Lo: 67°F 19°C
Sunrise 06:27 AM
Sunset 07:11 PM
Wind S 11 mph18 km/h
Dew Point 67°F19°C
uv Index 7
Barometric Pressure 30.12 in1020 mb
POP 2% *
Humidity 49%
Wed, 9th
Calvin IL Weather - Wednesday, Sep 9, 2026 - Sunny
Hi: 103°F 39°C
Lo: 77°F 25°C
Sunrise 06:28 AM
Sunset 07:09 PM
Wind SW 14 mph22 km/h
Dew Point 63°F17°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 0% *
Humidity 32%
Thu, 10th
Calvin IL Weather - Thursday, Sep 10, 2026 - Overcast
Hi: 90°F 32°C
Lo: 66°F 19°C
Sunrise 06:29 AM
Sunset 07:08 PM
Wind W 9 mph15 km/h
Dew Point 68°F20°C
uv Index 6
Barometric Pressure 29.88 in1012 mb
POP 14% *
Humidity 60%
Fri, 11th
Calvin IL Weather - Friday, Sep 11, 2026 - Overcast
Hi: 79°F 26°C
Lo: 63°F 17°C
Sunrise 06:30 AM
Sunset 07:06 PM
Wind E 10 mph16 km/h
Dew Point 61°F16°C
uv Index 5
Barometric Pressure 30 in1016 mb
POP 15% *
Humidity 63%
Sat, 12th
Calvin IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 86°F 30°C
Lo: 66°F 19°C
Sunrise 06:31 AM
Sunset 07:05 PM
Wind ESE 8 mph13 km/h
Dew Point 61°F16°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 4% *
Humidity 53%
Sun, 13th
Calvin IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 98°F 36°C
Lo: 71°F 22°C
Sunrise 06:32 AM
Sunset 07:03 PM
Wind SSW 16 mph25 km/h
Dew Point 66°F19°C
uv Index 8
Barometric Pressure 29.88 in1012 mb
POP 1% *
Humidity 45%
Mon, 14th
Calvin IL Weather - Monday, Sep 14, 2026 - Overcast
Hi: 83°F 28°C
Lo: 63°F 17°C
Sunrise 06:33 AM
Sunset 07:01 PM
Wind NNE 12 mph19 km/h
Dew Point 51°F11°C
uv Index 5
Barometric Pressure 30.15 in1021 mb
POP 5% *
Humidity 44%
Tue, 15th
Calvin IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 80°F 27°C
Lo: 52°F 11°C
Sunrise 06:33 AM
Sunset 07:00 PM
Wind NE 7 mph11 km/h
Dew Point 36°F2°C
uv Index 6
Barometric Pressure 30.24 in1024 mb
POP 0% *
Humidity 27%
Wed, 16th
Calvin IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 87°F 31°C
Lo: 58°F 14°C
Sunrise 06:34 AM
Sunset 06:58 PM
Wind SSE 7 mph12 km/h
Dew Point 44°F7°C
uv Index 7
Barometric Pressure 30.18 in1022 mb
POP 1% *
Humidity 29%
Thu, 17th
Calvin IL Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 95°F 35°C
Lo: 71°F 22°C
Sunrise 06:35 AM
Sunset 06:57 PM
Wind SSW 9 mph14 km/h
Dew Point 65°F19°C
uv Index 8
Barometric Pressure 30.09 in1019 mb
POP 6% *
Humidity 43%
Fri, 18th
Calvin IL Weather - Friday, Sep 18, 2026 - Sunny
Hi: 99°F 37°C
Lo: 77°F 25°C
Sunrise 06:36 AM
Sunset 06:55 PM
Wind SW 11 mph17 km/h
Dew Point 66°F19°C
uv Index 8
Barometric Pressure 30.03 in1017 mb
POP 4% *
Humidity 39%
Sat, 19th
Calvin IL Weather - Saturday, Sep 19, 2026 - Sunny
Hi: 98°F 36°C
Lo: 77°F 25°C
Sunrise 06:37 AM
Sunset 06:53 PM
Wind SSW 9 mph14 km/h
Dew Point 62°F17°C
uv Index 8
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 35%
* POP = Probability of Precipitation. Data for 12:00 PM.