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St. David IL Weather - Mostly Cloudy - 79°F
Mostly Cloudy
79°F
Updated 2:37 am
Feels Like 77°F
Humidity 58%
Wind W 6 mph
Barometer  30.05 in
Dew Point 63°F
St. David IL Weather - Mostly Cloudy - 26°C
Mostly Cloudy
26°C
Updated 2:37 am
Feels Like 25°C
Humidity 58%
Wind W 10 km/h
Barometer  101.7 kPa
Dew Point 17°C
St. David, IL Weather and Current Conditionsst. david il weather forecast

St. David, IL Weather Forecast

St. David Illinois WeatherSt. David, Illinois Weather Weather Forecast
14 day API St. David, IL weather forecast. Note. Our 7-day weather forecast for St. David, 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.
St. David, IL Weather Forecast Dated: 237 AM Wed Sep 09 2026
Expect a very warm period with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Wednesday, September 9, 2026

Mid-Morning
St. David Weather - 2026-09-09 - Morning - Rain
70°F 21°C
Rain
Mid-Afternoon
St. David Weather - 2026-09-09 - Afternoon - Overcast
80°F 27°C
Overcast
Early-Evening
St. David Weather - 2026-09-09 - Evening - Overcast
75°F 24°C
Overcast
Warm and summery around 80°F 27°C (feels like 85°F 29°C), early showers breaking for a drier afternoon, with steady humidity and steady pressure.

Thursday, September 10, 2026

Mid-Morning
St. David Weather - 2026-09-10 - Morning - Overcast
73°F 23°C
Overcast
Mid-Afternoon
St. David Weather - 2026-09-10 - Afternoon - Light Showers
77°F 25°C
Light Showers
Early-Evening
St. David Weather - 2026-09-10 - Evening - Light Showers
73°F 23°C
Light Showers
Comfortable with temperatures reaching 77°F 25°C, clouds and showers taking over for the afternoon and evening, with steady humidity and steady pressure. Winds turning from the NW to the NE at 9 mph 14 km/h.

Friday, September 11, 2026

Mid-Morning
St. David Weather - 2026-09-11 - Morning - Sunny
66°F 19°C
Sunny
Mid-Afternoon
St. David Weather - 2026-09-11 - Afternoon - Sunny
86°F 30°C
Sunny
Early-Evening
St. David Weather - 2026-09-11 - Evening - Sunny
79°F 26°C
Sunny
Quite warm around 86°F 30°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds switching from the ESE to the SE at 8 mph 13 km/h.

Saturday, September 12, 2026

Mid-Morning
St. David Weather - 2026-09-12 - Morning - Scattered Showers
73°F 23°C
Scattered Showers
Mid-Afternoon
St. David Weather - 2026-09-12 - Afternoon - Overcast
83°F 28°C
Overcast
Early-Evening
St. David Weather - 2026-09-12 - Evening - Scattered Showers
77°F 25°C
Scattered Showers
Warm temperatures up to 83°F 28°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds moving from the SSW to the ENE at 6 mph 10 km/h.

Sunday, September 13, 2026

Mid-Morning
St. David Weather - 2026-09-13 - Morning - Overcast
72°F 22°C
Overcast
Mid-Afternoon
St. David Weather - 2026-09-13 - Afternoon - Overcast
87°F 30°C
Overcast
Early-Evening
St. David Weather - 2026-09-13 - Evening - Overcast
84°F 29°C
Overcast
Very warm with a high of 87°F 30°C, overcast throughout the day, with lower humidity and steady pressure.

Monday, September 14, 2026

Mid-Morning
St. David Weather - 2026-09-14 - Morning - Light Showers
73°F 23°C
Light Showers
Mid-Afternoon
St. David Weather - 2026-09-14 - Afternoon - Scattered Showers
91°F 33°C
Scattered Showers
Early-Evening
St. David Weather - 2026-09-14 - Evening - Sunny
84°F 29°C
Sunny
Very hot with a high of 91°F 33°C, feeling closer to 95°F 35°C in the humidity, locally heavy downpours at times, with lower humidity and barometric pressure falling. Winds swinging from the S to the NE at 10 mph 16 km/h.

Tuesday, September 15, 2026

Mid-Morning
St. David Weather - 2026-09-15 - Morning - Partly Cloudy
71°F 22°C
Partly Cloudy
Mid-Afternoon
St. David Weather - 2026-09-15 - Afternoon - Sunny
75°F 24°C
Sunny
Early-Evening
St. David Weather - 2026-09-15 - Evening - Sunny
69°F 21°C
Sunny
Comfortable with temperatures reaching 75°F 24°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure rising. Winds shifting from the NW to the SE at 8 mph 12 km/h.

Wednesday, September 16, 2026

Mid-Morning
St. David Weather - 2026-09-16 - Morning - Sunny
63°F 17°C
Sunny
Mid-Afternoon
St. David Weather - 2026-09-16 - Afternoon - Overcast
78°F 25°C
Overcast
Early-Evening
St. David Weather - 2026-09-16 - Evening - Overcast
73°F 23°C
Overcast
Enjoyable around 78°F 25°C, sunny in the morning, overcast in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds turning from the ENE to the ESE at 10 mph 15 km/h.

Thursday, September 17, 2026

Mid-Morning
St. David Weather - 2026-09-17 - Morning - Sunny
73°F 23°C
Sunny
Mid-Afternoon
St. David Weather - 2026-09-17 - Afternoon - Sunny
95°F 35°C
Sunny
Early-Evening
St. David Weather - 2026-09-17 - Evening - Sunny
91°F 33°C
Sunny
Hot temperatures near 95°F 35°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds out of the SSW at 12 mph 20 km/h. Gusts up to 24 mph 39 km/h.

Friday, September 18, 2026

Mid-Morning
St. David Weather - 2026-09-18 - Morning - Sunny
86°F 30°C
Sunny
Mid-Afternoon
St. David Weather - 2026-09-18 - Afternoon - Sunny
100°F 38°C
Sunny
Early-Evening
St. David Weather - 2026-09-18 - Evening - Cloudy
93°F 34°C
Cloudy
Sweltering heat reaching 100°F 38°C, sunny in the morning, partly cloudy in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds moving from the WSW to the ENE at 6 mph 10 km/h.

Saturday, September 19, 2026

Mid-Morning
St. David Weather - 2026-09-19 - Morning - Cloudy
72°F 22°C
Cloudy
Mid-Afternoon
St. David Weather - 2026-09-19 - Afternoon - Sunny
91°F 33°C
Sunny
Early-Evening
St. David Weather - 2026-09-19 - Evening - Sunny
79°F 26°C
Sunny
Very hot with temperatures reaching 91°F 33°C, partly cloudy in the morning, sunny in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds SSE at 4 mph 7 km/h. Gusts up to 21 mph 33 km/h.

Sunday, September 20, 2026

Mid-Morning
St. David Weather - 2026-09-20 - Morning - Scattered Showers
70°F 21°C
Scattered Showers
Mid-Afternoon
St. David Weather - 2026-09-20 - Afternoon - Scattered Showers
98°F 37°C
Scattered Showers
Early-Evening
St. David Weather - 2026-09-20 - Evening - Sunny
94°F 35°C
Sunny
Hot and sweltering around 98°F 37°C, locally heavy downpours at times, with lower humidity and barometric pressure falling. Winds shifting from the ESE to the SSW at 11 mph 18 km/h. Gusts up to 24 mph 39 km/h.

Monday, September 21, 2026

Mid-Morning
St. David Weather - 2026-09-21 - Morning - Partly Cloudy
77°F 25°C
Partly Cloudy
Mid-Afternoon
St. David Weather - 2026-09-21 - Afternoon - Overcast
71°F 22°C
Overcast
Early-Evening
St. David Weather - 2026-09-21 - Evening - Scattered Showers
66°F 19°C
Scattered Showers
Enjoyable around 71°F 22°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure rising. Winds turning from the WNW to the ESE at 7 mph 11 km/h.

Tuesday, September 22, 2026

Mid-Morning
St. David Weather - 2026-09-22 - Morning - Overcast
60°F 16°C
Overcast
Mid-Afternoon
St. David Weather - 2026-09-22 - Afternoon - Overcast
67°F 19°C
Overcast
Early-Evening
St. David Weather - 2026-09-22 - Evening - Overcast
63°F 17°C
Overcast
Mildly cool near 67°F 19°C, overcast throughout the day, with steady humidity and steady pressure. Winds switching from the NE to the ENE at 8 mph 13 km/h.

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Weather by the Numbers

Wed, 9th
St. David IL Weather - Wednesday, Sep 9, 2026 - Light Rain Shower
Hi: 82°F 28°C
Lo: 70°F 21°C
Sunrise 06:35 AM
Sunset 07:19 PM
Wind SW 4 mph6 km/h
Dew Point 68°F20°C
uv Index 7
Barometric Pressure 29.97 in1015 mb
POP 41% *
Humidity 62%
Thu, 10th
St. David IL Weather - Thursday, Sep 10, 2026 - Patchy Rain Nearby
Hi: 78°F 26°C
Lo: 68°F 20°C
Sunrise 06:36 AM
Sunset 07:18 PM
Wind NNE 4 mph7 km/h
Dew Point 68°F20°C
uv Index 4
Barometric Pressure 29.97 in1015 mb
POP 23% *
Humidity 74%
Fri, 11th
St. David IL Weather - Friday, Sep 11, 2026 - Sunny
Hi: 87°F 30°C
Lo: 58°F 14°C
Sunrise 06:37 AM
Sunset 07:16 PM
Wind SE 7 mph11 km/h
Dew Point 56°F14°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 1% *
Humidity 46%
Sat, 12th
St. David IL Weather - Saturday, Sep 12, 2026 - Overcast
Hi: 83°F 28°C
Lo: 67°F 19°C
Sunrise 06:38 AM
Sunset 07:14 PM
Wind WSW 9 mph14 km/h
Dew Point 65°F19°C
uv Index 5
Barometric Pressure 29.94 in1014 mb
POP 16% *
Humidity 66%
Sun, 13th
St. David IL Weather - Sunday, Sep 13, 2026 - Overcast
Hi: 88°F 31°C
Lo: 66°F 19°C
Sunrise 06:39 AM
Sunset 07:13 PM
Wind SSE 8 mph13 km/h
Dew Point 65°F19°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 15% *
Humidity 63%
Mon, 14th
St. David IL Weather - Monday, Sep 14, 2026 - Light Rain Shower
Hi: 95°F 35°C
Lo: 72°F 22°C
Sunrise 06:40 AM
Sunset 07:11 PM
Wind SSW 11 mph17 km/h
Dew Point 70°F21°C
uv Index 6
Barometric Pressure 29.88 in1012 mb
POP 48% *
Humidity 74%
Tue, 15th
St. David IL Weather - Tuesday, Sep 15, 2026 - Cloudy
Hi: 76°F 24°C
Lo: 63°F 17°C
Sunrise 06:41 AM
Sunset 07:09 PM
Wind NW 14 mph22 km/h
Dew Point 60°F16°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 5% *
Humidity 63%
Wed, 16th
St. David IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 79°F 26°C
Lo: 57°F 14°C
Sunrise 06:42 AM
Sunset 07:08 PM
Wind E 9 mph14 km/h
Dew Point 48°F9°C
uv Index 6
Barometric Pressure 30.3 in1026 mb
POP 5% *
Humidity 42%
Thu, 17th
St. David IL Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 97°F 36°C
Lo: 65°F 18°C
Sunrise 06:43 AM
Sunset 07:06 PM
Wind SSW 13 mph21 km/h
Dew Point 57°F14°C
uv Index 8
Barometric Pressure 30.18 in1022 mb
POP 1% *
Humidity 37%
Fri, 18th
St. David IL Weather - Friday, Sep 18, 2026 - Sunny
Hi: 101°F 38°C
Lo: 78°F 26°C
Sunrise 06:44 AM
Sunset 07:04 PM
Wind W 12 mph19 km/h
Dew Point 63°F17°C
uv Index 9
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 35%
Sat, 19th
St. David IL Weather - Saturday, Sep 19, 2026 - Sunny
Hi: 92°F 34°C
Lo: 64°F 18°C
Sunrise 06:45 AM
Sunset 07:02 PM
Wind ESE 8 mph13 km/h
Dew Point 65°F18°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 3% *
Humidity 55%
Sun, 20th
St. David IL Weather - Sunday, Sep 20, 2026 - Patchy Rain Nearby
Hi: 101°F 38°C
Lo: 65°F 18°C
Sunrise 06:46 AM
Sunset 07:01 PM
Wind SSE 10 mph16 km/h
Dew Point 63°F17°C
uv Index 7
Barometric Pressure 29.91 in1013 mb
POP 17% *
Humidity 50%
Mon, 21st
St. David IL Weather - Monday, Sep 21, 2026 - Overcast
Hi: 85°F 30°C
Lo: 63°F 17°C
Sunrise 06:47 AM
Sunset 06:59 PM
Wind NW 14 mph23 km/h
Dew Point 62°F17°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 17% *
Humidity 67%
Tue, 22nd
St. David IL Weather - Tuesday, Sep 22, 2026 - Overcast
Hi: 67°F 19°C
Lo: 58°F 15°C
Sunrise 06:48 AM
Sunset 06:57 PM
Wind ENE 9 mph14 km/h
Dew Point 45°F7°C
uv Index 4
Barometric Pressure 30.33 in1027 mb
POP 11% *
Humidity 49%
* POP = Probability of Precipitation. Data for 12:00 PM.