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Mendon IL Weather - Clear - 87°F
Clear
87°F
Updated 8:53 pm
Feels Like 89°F
Humidity 60%
Wind SSE 5 mph
Barometer  29.89 in
Dew Point 72°F
Mendon IL Weather - Clear - 31°C
Clear
31°C
Updated 8:53 pm
Feels Like 32°C
Humidity 60%
Wind SSE 8 km/h
Barometer  101.2 kPa
Dew Point 22°C
Mendon, IL Weather and Current Conditionsmendon il weather forecast

Mendon, IL Weather Forecast

Mendon Illinois WeatherMendon, Illinois Weather Weather Forecast
14 day API Mendon, IL weather forecast. Note. Our 7-day weather forecast for Mendon, Illinois is our most reliable and accurate forecast. This model should only be used as a likely scenario. Forecasting more than 7 days is difficult.
Mendon, IL Weather Forecast Dated: 853 PM Thu Sep 03 2026
Expect a hot stretch with a mix of sun and clouds and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.

Thursday, September 3, 2026

Mid-Morning
Mendon Weather - 2026-09-03 - Morning - Sunny
85°F 29°C
Sunny
Mid-Afternoon
Mendon Weather - 2026-09-03 - Afternoon - Sunny
101°F 38°C
Sunny
Early-Evening
Mendon Weather - 2026-09-03 - Evening - Sunny
92°F 34°C
Sunny
Scorching heat reaching 101°F 38°C, feeling like 108°F 42°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds turning from the SW to the S at 8 mph 12 km/h.

Friday, September 4, 2026

Mid-Morning
Mendon Weather - 2026-09-04 - Morning - Partly Cloudy
90°F 32°C
Partly Cloudy
Mid-Afternoon
Mendon Weather - 2026-09-04 - Afternoon - Cloudy
104°F 40°C
Cloudy
Early-Evening
Mendon Weather - 2026-09-04 - Evening - Overcast
97°F 36°C
Overcast
Sweltering heat reaching 104°F 40°C, partly cloudy in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds switching from the WSW to the SW at 8 mph 12 km/h.

Saturday, September 5, 2026

Mid-Morning
Mendon Weather - 2026-09-05 - Morning - Scattered Showers
83°F 29°C
Scattered Showers
Mid-Afternoon
Mendon Weather - 2026-09-05 - Afternoon - Sunny
100°F 38°C
Sunny
Early-Evening
Mendon Weather - 2026-09-05 - Evening - Sunny
89°F 32°C
Sunny
Dangerously hot temperatures around 100°F 38°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds ENE at 9 mph 14 km/h. Gusts up to 21 mph 33 km/h.

Sunday, September 6, 2026

Mid-Morning
Mendon Weather - 2026-09-06 - Morning - Sunny
76°F 25°C
Sunny
Mid-Afternoon
Mendon Weather - 2026-09-06 - Afternoon - Sunny
92°F 33°C
Sunny
Early-Evening
Mendon Weather - 2026-09-06 - Evening - Overcast
81°F 28°C
Overcast
Hot temperatures near 92°F 33°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds out of the ENE at 14 mph 22 km/h. Gusts up to 20 mph 33 km/h.

Monday, September 7, 2026

Mid-Morning
Mendon Weather - 2026-09-07 - Morning - Partly Cloudy
70°F 21°C
Partly Cloudy
Mid-Afternoon
Mendon Weather - 2026-09-07 - Afternoon - Sunny
89°F 31°C
Sunny
Early-Evening
Mendon Weather - 2026-09-07 - Evening - Overcast
83°F 28°C
Overcast
Very warm with a high of 89°F 31°C, partly cloudy in the morning, sunny in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling. Winds blowing from the E at 11 mph 18 km/h. Gusts up to 21 mph 34 km/h.

Tuesday, September 8, 2026

Mid-Morning
Mendon Weather - 2026-09-08 - Morning - Scattered Showers
79°F 26°C
Scattered Showers
Mid-Afternoon
Mendon Weather - 2026-09-08 - Afternoon - Scattered Showers
103°F 39°C
Scattered Showers
Early-Evening
Mendon Weather - 2026-09-08 - Evening - Sunny
100°F 38°C
Sunny
Sweltering heat reaching 103°F 39°C, locally heavy downpours at times, with lower humidity and barometric pressure falling. Winds turning from the SSE to the S at 13 mph 21 km/h. Gusts up to 24 mph 39 km/h.

Wednesday, September 9, 2026

Mid-Morning
Mendon Weather - 2026-09-09 - Morning - Sunny
83°F 29°C
Sunny
Mid-Afternoon
Mendon Weather - 2026-09-09 - Afternoon - Scattered Showers
98°F 36°C
Scattered Showers
Early-Evening
Mendon Weather - 2026-09-09 - Evening - Sunny
87°F 31°C
Sunny
Hot and sweltering around 98°F 36°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds switching from the WNW to the E at 9 mph 15 km/h.

Thursday, September 10, 2026

Mid-Morning
Mendon Weather - 2026-09-10 - Morning - Sunny
81°F 27°C
Sunny
Mid-Afternoon
Mendon Weather - 2026-09-10 - Afternoon - Partly Cloudy
104°F 40°C
Partly Cloudy
Early-Evening
Mendon Weather - 2026-09-10 - Evening - Sunny
92°F 33°C
Sunny
Dangerously hot with a high of 104°F 40°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds moving from the SE to the E at 12 mph 19 km/h. Gusts up to 22 mph 35 km/h.

Friday, September 11, 2026

Mid-Morning
Mendon Weather - 2026-09-11 - Morning - Partly Cloudy
94°F 34°C
Partly Cloudy
Mid-Afternoon
Mendon Weather - 2026-09-11 - Afternoon - Sunny
108°F 42°C
Sunny
Early-Evening
Mendon Weather - 2026-09-11 - Evening - Sunny
99°F 37°C
Sunny
Scorching hot near 108°F 42°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds swinging from the SW to the S at 11 mph 16 km/h.

Saturday, September 12, 2026

Mid-Morning
Mendon Weather - 2026-09-12 - Morning - Sunny
90°F 32°C
Sunny
Mid-Afternoon
Mendon Weather - 2026-09-12 - Afternoon - Partly Cloudy
103°F 40°C
Partly Cloudy
Early-Evening
Mendon Weather - 2026-09-12 - Evening - Overcast
96°F 36°C
Overcast
Sweltering heat reaching 103°F 40°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds out of the SW at 13 mph 22 km/h.

Sunday, September 13, 2026

Mid-Morning
Mendon Weather - 2026-09-13 - Morning - Sunny
85°F 29°C
Sunny
Mid-Afternoon
Mendon Weather - 2026-09-13 - Afternoon - Sunny
99°F 37°C
Sunny
Early-Evening
Mendon Weather - 2026-09-13 - Evening - Scattered Showers
80°F 27°C
Scattered Showers
Very hot with temperatures reaching 99°F 37°C, scattered downpours possible, with increasing humidity and steady pressure. Winds turning from the SW to the SSE at 9 mph 15 km/h.

Monday, September 14, 2026

Mid-Morning
Mendon Weather - 2026-09-14 - Morning - Scattered Showers
74°F 24°C
Scattered Showers
Mid-Afternoon
Mendon Weather - 2026-09-14 - Afternoon - Light Showers
80°F 27°C
Light Showers
Early-Evening
Mendon Weather - 2026-09-14 - Evening - Overcast
79°F 26°C
Overcast
Very warm near 80°F 27°C, though humidity makes it feel like 83°F 28°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds switching from the SSW to the NW at 8 mph 12 km/h.

Tuesday, September 15, 2026

Mid-Morning
Mendon Weather - 2026-09-15 - Morning - Sunny
65°F 19°C
Sunny
Mid-Afternoon
Mendon Weather - 2026-09-15 - Afternoon - Sunny
80°F 26°C
Sunny
Early-Evening
Mendon Weather - 2026-09-15 - Evening - Sunny
71°F 22°C
Sunny
Quite warm around 80°F 26°C, sunny throughout the day, with lower humidity and steady pressure. Winds moving from the W to the ESE at 9 mph 14 km/h.

Wednesday, September 16, 2026

Mid-Morning
Mendon Weather - 2026-09-16 - Morning - Sunny
64°F 18°C
Sunny
Mid-Afternoon
Mendon Weather - 2026-09-16 - Afternoon - Partly Cloudy
79°F 26°C
Partly Cloudy
Early-Evening
Mendon Weather - 2026-09-16 - Evening - Partly Cloudy
73°F 23°C
Partly Cloudy
Mild temperatures up to 79°F 26°C, sunny in the morning, partly cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds swinging from the NNE to the ENE at 9 mph 15 km/h.

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Weather by the Numbers

Thu, 3rd
Mendon IL Weather - Thursday, Sep 3, 2026 - Sunny
Hi: 101°F 38°C
Lo: 76°F 24°C
Sunrise 06:34 AM
Sunset 07:33 PM
Wind WSW 10 mph17 km/h
Dew Point 73°F23°C
uv Index 8
Barometric Pressure 29.88 in1012 mb
POP 1% *
Humidity 44%
Fri, 4th
Mendon IL Weather - Friday, Sep 4, 2026 - Sunny
Hi: 104°F 40°C
Lo: 79°F 26°C
Sunrise 06:35 AM
Sunset 07:32 PM
Wind WSW 11 mph18 km/h
Dew Point 61°F16°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 1% *
Humidity 27%
Sat, 5th
Mendon IL Weather - Saturday, Sep 5, 2026 - Cloudy
Hi: 100°F 38°C
Lo: 79°F 26°C
Sunrise 06:36 AM
Sunset 07:30 PM
Wind ENE 7 mph11 km/h
Dew Point 62°F17°C
uv Index 7
Barometric Pressure 29.91 in1013 mb
POP 6% *
Humidity 35%
Sun, 6th
Mendon IL Weather - Sunday, Sep 6, 2026 - Sunny
Hi: 92°F 33°C
Lo: 70°F 21°C
Sunrise 06:37 AM
Sunset 07:28 PM
Wind E 11 mph17 km/h
Dew Point 65°F18°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 2% *
Humidity 47%
Mon, 7th
Mendon IL Weather - Monday, Sep 7, 2026 - Overcast
Hi: 89°F 32°C
Lo: 64°F 18°C
Sunrise 06:38 AM
Sunset 07:27 PM
Wind ESE 11 mph17 km/h
Dew Point 50°F10°C
uv Index 6
Barometric Pressure 30.09 in1019 mb
POP 9% *
Humidity 32%
Tue, 8th
Mendon IL Weather - Tuesday, Sep 8, 2026 - Patchy Rain Nearby
Hi: 104°F 40°C
Lo: 69°F 21°C
Sunrise 06:39 AM
Sunset 07:25 PM
Wind SSW 14 mph22 km/h
Dew Point 54°F12°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 9% *
Humidity 27%
Wed, 9th
Mendon IL Weather - Wednesday, Sep 9, 2026 - Sunny
Hi: 98°F 36°C
Lo: 79°F 26°C
Sunrise 06:40 AM
Sunset 07:24 PM
Wind NNW 7 mph11 km/h
Dew Point 62°F16°C
uv Index 8
Barometric Pressure 29.97 in1015 mb
POP 6% *
Humidity 37%
Thu, 10th
Mendon IL Weather - Thursday, Sep 10, 2026 - Sunny
Hi: 104°F 40°C
Lo: 72°F 22°C
Sunrise 06:41 AM
Sunset 07:22 PM
Wind WSW 8 mph13 km/h
Dew Point 56°F13°C
uv Index 9
Barometric Pressure 29.91 in1013 mb
POP 2% *
Humidity 27%
Fri, 11th
Mendon IL Weather - Friday, Sep 11, 2026 - Sunny
Hi: 108°F 42°C
Lo: 84°F 29°C
Sunrise 06:42 AM
Sunset 07:20 PM
Wind WSW 14 mph23 km/h
Dew Point 55°F13°C
uv Index 10
Barometric Pressure 29.8 in1009 mb
POP 0% *
Humidity 20%
Sat, 12th
Mendon IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 105°F 40°C
Lo: 82°F 28°C
Sunrise 06:43 AM
Sunset 07:19 PM
Wind SW 13 mph22 km/h
Dew Point 56°F13°C
uv Index 9
Barometric Pressure 29.8 in1009 mb
POP 1% *
Humidity 23%
Sun, 13th
Mendon IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 100°F 38°C
Lo: 72°F 22°C
Sunrise 06:44 AM
Sunset 07:17 PM
Wind SW 15 mph23 km/h
Dew Point 60°F16°C
uv Index 9
Barometric Pressure 29.88 in1012 mb
POP 1% *
Humidity 31%
Mon, 14th
Mendon IL Weather - Monday, Sep 14, 2026 - Partly Cloudy
Hi: 83°F 28°C
Lo: 67°F 20°C
Sunrise 06:45 AM
Sunset 07:15 PM
Wind WSW 9 mph14 km/h
Dew Point 69°F20°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 40% *
Humidity 81%
Tue, 15th
Mendon IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 80°F 27°C
Lo: 56°F 13°C
Sunrise 06:46 AM
Sunset 07:14 PM
Wind WNW 17 mph28 km/h
Dew Point 36°F2°C
uv Index 6
Barometric Pressure 29.88 in1012 mb
POP 0% *
Humidity 24%
Wed, 16th
Mendon IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 80°F 27°C
Lo: 56°F 14°C
Sunrise 06:47 AM
Sunset 07:12 PM
Wind NNE 5 mph9 km/h
Dew Point 44°F7°C
uv Index 6
Barometric Pressure 30.06 in1018 mb
POP 2% *
Humidity 35%
* POP = Probability of Precipitation. Data for 12:00 PM.