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Mount Vernon IL Weather - Mostly Cloudy - 60°F
Mostly Cloudy
60°F
Updated 3:28 am
Feels Like 59°F
Humidity 92%
Wind NNE 6 mph
Barometer  30.21 in
Dew Point 58°F
Mount Vernon IL Weather - Mostly Cloudy - 16°C
Mostly Cloudy
16°C
Updated 3:28 am
Feels Like 15°C
Humidity 92%
Wind NNE 10 km/h
Barometer  102.3 kPa
Dew Point 14°C
Mount Vernon, IL Weather and Current Conditionsmount vernon il weather forecast

Mount Vernon, IL Weather Forecast

Mount Vernon Illinois WeatherMount Vernon, Illinois Weather Weather Forecast
14 day API forecast for Mount Vernon, Illinois. Note. The 7-day weather forecast for Mount Vernon, IL is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
Mount Vernon, IL Weather Forecast Dated: 328 AM Wed Sep 23 2026
Expect a mild stretch with a mix of sun and clouds and mostly dry weather over the coming period. moderate humidity and no major pressure swings will dominate.

Wednesday, September 23, 2026

Mid-Morning
Mount Vernon Weather - 2026-09-23 - Morning - Overcast
63°F 17°C
Overcast
Mid-Afternoon
Mount Vernon Weather - 2026-09-23 - Afternoon - Cloudy
72°F 22°C
Cloudy
Early-Evening
Mount Vernon Weather - 2026-09-23 - Evening - Cloudy
67°F 20°C
Cloudy
Pleasant near 72°F 22°C, overcast throughout the day, with steady humidity and steady pressure. Winds out of the NNE at 9 mph 15 km/h.

Thursday, September 24, 2026

Mid-Morning
Mount Vernon Weather - 2026-09-24 - Morning - Sunny
62°F 17°C
Sunny
Mid-Afternoon
Mount Vernon Weather - 2026-09-24 - Afternoon - Sunny
77°F 25°C
Sunny
Early-Evening
Mount Vernon Weather - 2026-09-24 - Evening - Cloudy
71°F 22°C
Cloudy
Comfortable with temperatures reaching 77°F 25°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds switching from the NNE to the ENE at 9 mph 14 km/h.

Friday, September 25, 2026

Mid-Morning
Mount Vernon Weather - 2026-09-25 - Morning - Sunny
65°F 18°C
Sunny
Mid-Afternoon
Mount Vernon Weather - 2026-09-25 - Afternoon - Overcast
77°F 25°C
Overcast
Early-Evening
Mount Vernon Weather - 2026-09-25 - Evening - Cloudy
69°F 21°C
Cloudy
Enjoyable around 77°F 25°C, sunny in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds moving from the E to the ENE at 9 mph 15 km/h.

Saturday, September 26, 2026

Mid-Morning
Mount Vernon Weather - 2026-09-26 - Morning - Overcast
65°F 18°C
Overcast
Mid-Afternoon
Mount Vernon Weather - 2026-09-26 - Afternoon - Scattered Showers
73°F 23°C
Scattered Showers
Early-Evening
Mount Vernon Weather - 2026-09-26 - Evening - Scattered Showers
64°F 18°C
Scattered Showers
Mild temperatures up to 73°F 23°C, periods of heavy rain and gusty conditions, with increasing humidity and steady pressure. Winds swinging from the ESE to the ENE at 8 mph 12 km/h.

Sunday, September 27, 2026

Mid-Morning
Mount Vernon Weather - 2026-09-27 - Morning - Overcast
65°F 18°C
Overcast
Mid-Afternoon
Mount Vernon Weather - 2026-09-27 - Afternoon - Light Showers
72°F 22°C
Light Showers
Early-Evening
Mount Vernon Weather - 2026-09-27 - Evening - Scattered Showers
68°F 20°C
Scattered Showers
Mild with a high of 72°F 22°C, scattered downpours possible, with increasing humidity and steady pressure.

Monday, September 28, 2026

Mid-Morning
Mount Vernon Weather - 2026-09-28 - Morning - Scattered Showers
61°F 16°C
Scattered Showers
Mid-Afternoon
Mount Vernon Weather - 2026-09-28 - Afternoon - Scattered Showers
65°F 19°C
Scattered Showers
Early-Evening
Mount Vernon Weather - 2026-09-28 - Evening - Cloudy
59°F 15°C
Cloudy
Mildly cool near 65°F 19°C, locally heavy downpours at times, with increasing humidity and steady pressure. Winds shifting from the ESE to the E at 11 mph 16 km/h.

Tuesday, September 29, 2026

Mid-Morning
Mount Vernon Weather - 2026-09-29 - Morning - Scattered Showers
64°F 18°C
Scattered Showers
Mid-Afternoon
Mount Vernon Weather - 2026-09-29 - Afternoon - Scattered Showers
76°F 24°C
Scattered Showers
Early-Evening
Mount Vernon Weather - 2026-09-29 - Evening - Light Showers
73°F 23°C
Light Showers
Comfortable with temperatures reaching 76°F 24°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds turning from the SE to the SSW at 9 mph 14 km/h.

Wednesday, September 30, 2026

Mid-Morning
Mount Vernon Weather - 2026-09-30 - Morning - Light Showers
59°F 15°C
Light Showers
Mid-Afternoon
Mount Vernon Weather - 2026-09-30 - Afternoon - Sunny
71°F 22°C
Sunny
Early-Evening
Mount Vernon Weather - 2026-09-30 - Evening - Sunny
64°F 18°C
Sunny
Enjoyable around 71°F 22°C, scattered morning showers before drying out later, with lower humidity and steady pressure. Winds switching from the W to the WNW at 11 mph 17 km/h. Gusts up to 21 mph 35 km/h.

Thursday, October 1, 2026

Mid-Morning
Mount Vernon Weather - 2026-10-01 - Morning - Sunny
58°F 14°C
Sunny
Mid-Afternoon
Mount Vernon Weather - 2026-10-01 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
Mount Vernon Weather - 2026-10-01 - Evening - Sunny
67°F 20°C
Sunny
Mild temperatures up to 73°F 23°C, sunny throughout the day, with lower humidity and steady pressure. Winds blowing from the W at 14 mph 22 km/h.

Friday, October 2, 2026

Mid-Morning
Mount Vernon Weather - 2026-10-02 - Morning - Partly Cloudy
67°F 20°C
Partly Cloudy
Mid-Afternoon
Mount Vernon Weather - 2026-10-02 - Afternoon - Sunny
85°F 29°C
Sunny
Early-Evening
Mount Vernon Weather - 2026-10-02 - Evening - Sunny
76°F 24°C
Sunny
Very warm with a high of 85°F 29°C, sunny throughout the day, with steady humidity and steady pressure. Winds swinging from the SW to the SSW at 10 mph 16 km/h. Gusts up to 21 mph 34 km/h.

Saturday, October 3, 2026

Mid-Morning
Mount Vernon Weather - 2026-10-03 - Morning - Overcast
69°F 21°C
Overcast
Mid-Afternoon
Mount Vernon Weather - 2026-10-03 - Afternoon - Overcast
80°F 27°C
Overcast
Early-Evening
Mount Vernon Weather - 2026-10-03 - Evening - Overcast
73°F 23°C
Overcast
Warm and summery near 80°F 27°C, overcast throughout the day, with steady humidity and steady pressure. Winds shifting from the SW to the NNW at 9 mph 15 km/h.

Sunday, October 4, 2026

Mid-Morning
Mount Vernon Weather - 2026-10-04 - Morning - Sunny
59°F 15°C
Sunny
Mid-Afternoon
Mount Vernon Weather - 2026-10-04 - Afternoon - Sunny
74°F 23°C
Sunny
Early-Evening
Mount Vernon Weather - 2026-10-04 - Evening - Sunny
66°F 19°C
Sunny
Comfortable with temperatures reaching 74°F 23°C, sunny throughout the day, with lower humidity and steady pressure.

Monday, October 5, 2026

Mid-Morning
Mount Vernon Weather - 2026-10-05 - Morning - Cloudy
61°F 16°C
Cloudy
Mid-Afternoon
Mount Vernon Weather - 2026-10-05 - Afternoon - Cloudy
79°F 26°C
Cloudy
Early-Evening
Mount Vernon Weather - 2026-10-05 - Evening - Partly Cloudy
73°F 23°C
Partly Cloudy
Enjoyable around 79°F 26°C, overcast in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure.

Tuesday, October 6, 2026

Mid-Morning
Mount Vernon Weather - 2026-10-06 - Morning - Overcast
71°F 22°C
Overcast
Mid-Afternoon
Mount Vernon Weather - 2026-10-06 - Afternoon - Sunny
85°F 29°C
Sunny
Early-Evening
Mount Vernon Weather - 2026-10-06 - Evening - Sunny
75°F 24°C
Sunny
Warm temperatures up to 85°F 29°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds turning from the WNW to the NNE at 8 mph 13 km/h.

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Weather by the Numbers

Wed, 23rd
Mount Vernon IL Weather - Wednesday, Sep 23, 2026 - Overcast
Hi: 74°F 23°C
Lo: 61°F 16°C
Sunrise 06:44 AM
Sunset 06:51 PM
Wind NNE 10 mph15 km/h
Dew Point 54°F12°C
uv Index 4
Barometric Pressure 30.21 in1023 mb
POP 15% *
Humidity 61%
Thu, 24th
Mount Vernon IL Weather - Thursday, Sep 24, 2026 - Patchy Rain Nearby
Hi: 77°F 25°C
Lo: 57°F 14°C
Sunrise 06:45 AM
Sunset 06:49 PM
Wind NE 10 mph16 km/h
Dew Point 56°F13°C
uv Index 6
Barometric Pressure 30.21 in1023 mb
POP 10% *
Humidity 54%
Fri, 25th
Mount Vernon IL Weather - Friday, Sep 25, 2026 - Partly Cloudy
Hi: 77°F 25°C
Lo: 59°F 15°C
Sunrise 06:46 AM
Sunset 06:47 PM
Wind ENE 9 mph14 km/h
Dew Point 55°F13°C
uv Index 4
Barometric Pressure 30.21 in1023 mb
POP 5% *
Humidity 50%
Sat, 26th
Mount Vernon IL Weather - Saturday, Sep 26, 2026 - Patchy Rain Nearby
Hi: 73°F 23°C
Lo: 58°F 15°C
Sunrise 06:47 AM
Sunset 06:46 PM
Wind ESE 6 mph9 km/h
Dew Point 41°F5°C
uv Index 1
Barometric Pressure 30.15 in1021 mb
POP 10% *
Humidity 36%
Sun, 27th
Mount Vernon IL Weather - Sunday, Sep 27, 2026 - Sunny
Hi: 78°F 26°C
Lo: 61°F 16°C
Sunrise 06:48 AM
Sunset 06:44 PM
Wind ENE 8 mph13 km/h
Dew Point 41°F5°C
uv Index 6
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 37%
Mon, 28th
Mount Vernon IL Weather - Monday, Sep 28, 2026 - Patchy Rain Nearby
Hi: 66°F 19°C
Lo: 57°F 14°C
Sunrise 06:49 AM
Sunset 06:43 PM
Wind ESE 12 mph20 km/h
Dew Point 51°F11°C
uv Index 4
Barometric Pressure 29.97 in1015 mb
POP 15% *
Humidity 62%
Tue, 29th
Mount Vernon IL Weather - Tuesday, Sep 29, 2026 - Overcast
Hi: 77°F 25°C
Lo: 58°F 15°C
Sunrise 06:49 AM
Sunset 06:41 PM
Wind S 8 mph13 km/h
Dew Point 64°F18°C
uv Index 5
Barometric Pressure 29.8 in1009 mb
POP 32% *
Humidity 80%
Wed, 30th
Mount Vernon IL Weather - Wednesday, Sep 30, 2026 - Patchy Rain Nearby
Hi: 71°F 22°C
Lo: 58°F 14°C
Sunrise 06:50 AM
Sunset 06:40 PM
Wind W 18 mph30 km/h
Dew Point 47°F8°C
uv Index 4
Barometric Pressure 29.85 in1011 mb
POP 4% *
Humidity 53%
Thu, 1st
Mount Vernon IL Weather - Thursday, Oct 1, 2026 - Sunny
Hi: 74°F 23°C
Lo: 50°F 10°C
Sunrise 06:51 AM
Sunset 06:38 PM
Wind W 14 mph23 km/h
Dew Point 34°F1°C
uv Index 6
Barometric Pressure 30 in1016 mb
POP 1% *
Humidity 29%
Fri, 2nd
Mount Vernon IL Weather - Friday, Oct 2, 2026 - Sunny
Hi: 86°F 30°C
Lo: 59°F 15°C
Sunrise 06:52 AM
Sunset 06:36 PM
Wind SW 11 mph18 km/h
Dew Point 46°F8°C
uv Index 7
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 32%
Sat, 3rd
Mount Vernon IL Weather - Saturday, Oct 3, 2026 - Overcast
Hi: 82°F 28°C
Lo: 62°F 17°C
Sunrise 06:53 AM
Sunset 06:35 PM
Wind WSW 12 mph19 km/h
Dew Point 46°F8°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 9% *
Humidity 32%
Sun, 4th
Mount Vernon IL Weather - Sunday, Oct 4, 2026 - Sunny
Hi: 75°F 24°C
Lo: 54°F 12°C
Sunrise 06:54 AM
Sunset 06:33 PM
Wind NNE 7 mph11 km/h
Dew Point 37°F3°C
uv Index 6
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 32%
Mon, 5th
Mount Vernon IL Weather - Monday, Oct 5, 2026 - Overcast
Hi: 80°F 27°C
Lo: 53°F 12°C
Sunrise 06:55 AM
Sunset 06:32 PM
Wind SE 5 mph8 km/h
Dew Point 40°F5°C
uv Index 5
Barometric Pressure 30 in1016 mb
POP 6% *
Humidity 31%
Tue, 6th
Mount Vernon IL Weather - Tuesday, Oct 6, 2026 - Sunny
Hi: 85°F 30°C
Lo: 64°F 18°C
Sunrise 06:56 AM
Sunset 06:30 PM
Wind NW 6 mph10 km/h
Dew Point 52°F11°C
uv Index 7
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 38%
* POP = Probability of Precipitation. Data for 12:00 PM.