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St. Augustine IL Weather - Clear - 34°F
Clear
34°F
Updated 5:16 am
Feels Like 37°F
Humidity 100%
Wind N 0 mph
Barometer  30.14 in
Dew Point 34°F
St. Augustine IL Weather - Clear - 1°C
Clear
1°C
Updated 5:16 am
Feels Like 3°C
Humidity 100%
Wind N 0 km/h
Barometer  102.1 kPa
Dew Point 1°C
St. Augustine, IL Weather and Current Conditionsst. augustine il weather forecast

St. Augustine, IL Weather Forecast

St. Augustine Illinois WeatherSt. Augustine, Illinois Weather Weather Forecast
14 day API St. Augustine, IL weather forecast. Note. Our 7-day weather forecast for St. Augustine, 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. Augustine, IL Weather Forecast Dated: 516 AM Mon Nov 09 2026
Expect a cool pattern with a mix of sun and clouds and mostly dry weather over the coming period. generally humid conditions and no major pressure swings will dominate.

Monday, November 9, 2026

Mid-Morning
St. Augustine Weather - 2026-11-09 - Morning - Sunny
50°F 10°C
Sunny
Mid-Afternoon
St. Augustine Weather - 2026-11-09 - Afternoon - Sunny
64°F 18°C
Sunny
Early-Evening
St. Augustine Weather - 2026-11-09 - Evening - Clear
54°F 12°C
Clear
Refreshing around 64°F 18°C, sunny throughout the day, with increasing humidity and barometric pressure falling. Winds turning from the SSW to the SW at 8 mph 12 km/h.

Tuesday, November 10, 2026

Mid-Morning
St. Augustine Weather - 2026-11-10 - Morning - Sunny
52°F 11°C
Sunny
Mid-Afternoon
St. Augustine Weather - 2026-11-10 - Afternoon - Sunny
64°F 18°C
Sunny
Early-Evening
St. Augustine Weather - 2026-11-10 - Evening - Clear
51°F 10°C
Clear
Mildly cool near 64°F 18°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure.

Wednesday, November 11, 2026

Mid-Morning
St. Augustine Weather - 2026-11-11 - Morning - Scattered Showers
54°F 12°C
Scattered Showers
Mid-Afternoon
St. Augustine Weather - 2026-11-11 - Afternoon - Partly Cloudy
59°F 15°C
Partly Cloudy
Early-Evening
St. Augustine Weather - 2026-11-11 - Evening - Scattered Showers
50°F 10°C
Scattered Showers
Comfortable at 59°F 15°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds switching from the SSW to the N at 10 mph 17 km/h. Gusts up to 20 mph 32 km/h.

Thursday, November 12, 2026

Mid-Morning
St. Augustine Weather - 2026-11-12 - Morning - Overcast
43°F 6°C
Overcast
Mid-Afternoon
St. Augustine Weather - 2026-11-12 - Afternoon - Scattered Showers
45°F 7°C
Scattered Showers
Early-Evening
St. Augustine Weather - 2026-11-12 - Evening - Cloudy
40°F 5°C
Cloudy
Crisp with a high near 45°F 7°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds moving from the NNW to the N at 15 mph 23 km/h. Gusts up to 32 mph 52 km/h.

Friday, November 13, 2026

Mid-Morning
St. Augustine Weather - 2026-11-13 - Morning - Partly Cloudy
37°F 3°C
Partly Cloudy
Mid-Afternoon
St. Augustine Weather - 2026-11-13 - Afternoon - Overcast
42°F 6°C
Overcast
Early-Evening
St. Augustine Weather - 2026-11-13 - Evening - Partly Cloudy
37°F 3°C
Partly Cloudy
Biting cold near 42°F 6°C, partly cloudy in the morning, overcast in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds out of the NNW at 12 mph 19 km/h.

Saturday, November 14, 2026

Mid-Morning
St. Augustine Weather - 2026-11-14 - Morning - Sunny
36°F 2°C
Sunny
Mid-Afternoon
St. Augustine Weather - 2026-11-14 - Afternoon - Sunny
42°F 6°C
Sunny
Early-Evening
St. Augustine Weather - 2026-11-14 - Evening - Clear
36°F 2°C
Clear
Cold with a high near 42°F 6°C, sunny throughout the day, with steady humidity and steady pressure.

Sunday, November 15, 2026

Mid-Morning
St. Augustine Weather - 2026-11-15 - Morning - Partly Cloudy
40°F 4°C
Partly Cloudy
Mid-Afternoon
St. Augustine Weather - 2026-11-15 - Afternoon - Partly Cloudy
47°F 9°C
Partly Cloudy
Early-Evening
St. Augustine Weather - 2026-11-15 - Evening - Partly Cloudy
44°F 7°C
Partly Cloudy
Chilly near 47°F 9°C, partly cloudy in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds shifting from the SSE to the SE at 7 mph 12 km/h.

Monday, November 16, 2026

Mid-Morning
St. Augustine Weather - 2026-11-16 - Morning - Overcast
49°F 9°C
Overcast
Mid-Afternoon
St. Augustine Weather - 2026-11-16 - Afternoon - Overcast
55°F 13°C
Overcast
Early-Evening
St. Augustine Weather - 2026-11-16 - Evening - Overcast
51°F 11°C
Overcast
Crisp with a high near 55°F 13°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure.

Tuesday, November 17, 2026

Mid-Morning
St. Augustine Weather - 2026-11-17 - Morning - Overcast
53°F 12°C
Overcast
Mid-Afternoon
St. Augustine Weather - 2026-11-17 - Afternoon - Cloudy
59°F 15°C
Cloudy
Early-Evening
St. Augustine Weather - 2026-11-17 - Evening - Partly Cloudy
54°F 12°C
Partly Cloudy
Refreshing around 59°F 15°C, overcast in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure.

Wednesday, November 18, 2026

Mid-Morning
St. Augustine Weather - 2026-11-18 - Morning - Overcast
55°F 13°C
Overcast
Mid-Afternoon
St. Augustine Weather - 2026-11-18 - Afternoon - Overcast
60°F 15°C
Overcast
Early-Evening
St. Augustine Weather - 2026-11-18 - Evening - Partly Cloudy
54°F 12°C
Partly Cloudy
Mildly cool near 60°F 15°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure.

Thursday, November 19, 2026

Mid-Morning
St. Augustine Weather - 2026-11-19 - Morning - Overcast
53°F 12°C
Overcast
Mid-Afternoon
St. Augustine Weather - 2026-11-19 - Afternoon - Cloudy
59°F 15°C
Cloudy
Early-Evening
St. Augustine Weather - 2026-11-19 - Evening - Overcast
56°F 14°C
Overcast
Comfortable at 59°F 15°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and barometric pressure falling. Winds SSE at 11 mph 18 km/h. Gusts up to 26 mph 41 km/h.

Friday, November 20, 2026

Mid-Morning
St. Augustine Weather - 2026-11-20 - Morning - Drizzle
52°F 11°C
Drizzle
Mid-Afternoon
St. Augustine Weather - 2026-11-20 - Afternoon - Light Rain
53°F 12°C
Light Rain
Early-Evening
St. Augustine Weather - 2026-11-20 - Evening - Light Rain
50°F 10°C
Light Rain
Crisp with a high near 53°F 12°C, on-and-off showers throughout the day, with steady humidity and steady pressure. Winds switching from the SSW to the S at 7 mph 12 km/h. Gusts up to 22 mph 35 km/h.

Saturday, November 21, 2026

Mid-Morning
St. Augustine Weather - 2026-11-21 - Morning - Cloudy
54°F 12°C
Cloudy
Mid-Afternoon
St. Augustine Weather - 2026-11-21 - Afternoon - Partly Cloudy
57°F 14°C
Partly Cloudy
Early-Evening
St. Augustine Weather - 2026-11-21 - Evening - Partly Cloudy
51°F 10°C
Partly Cloudy
Brisk around 57°F 14°C, cloudy in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure.

Sunday, November 22, 2026

Mid-Morning
St. Augustine Weather - 2026-11-22 - Morning - Scattered Showers
48°F 9°C
Scattered Showers
Mid-Afternoon
St. Augustine Weather - 2026-11-22 - Afternoon - Drizzle
49°F 10°C
Drizzle
Early-Evening
St. Augustine Weather - 2026-11-22 - Evening - Heavy Rain
45°F 8°C
Heavy Rain
Cool and brisk at 49°F 10°C, scattered downpours possible, with increasing humidity and barometric pressure falling. Winds moving from the ENE to the NNE at 7 mph 11 km/h.

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Weather by the Numbers

Mon, 9th
St. Augustine IL Weather - Monday, Nov 9, 2026 - Sunny
Hi: 64°F 18°C
Lo: 39°F 4°C
Sunrise 06:41 AM
Sunset 04:49 PM
Wind SW 8 mph13 km/h
Dew Point 38°F3°C
Wind Chill 62°F16°C
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 42%
Tue, 10th
St. Augustine IL Weather - Tuesday, Nov 10, 2026 - Sunny
Hi: 65°F 18°C
Lo: 46°F 8°C
Sunrise 06:43 AM
Sunset 04:48 PM
Wind N 2 mph4 km/h
Dew Point 42°F6°C
Wind Chill 62°F17°C
Barometric Pressure 30.06 in1018 mb
POP 2% *
Humidity 48%
Wed, 11th
St. Augustine IL Weather - Wednesday, Nov 11, 2026 - Patchy Rain Nearby
Hi: 63°F 17°C
Lo: 46°F 8°C
Sunrise 06:44 AM
Sunset 04:47 PM
Wind WNW 8 mph13 km/h
Dew Point 51°F10°C
Wind Chill 56°F14°C
Barometric Pressure 29.77 in1008 mb
POP 26% *
Humidity 77%
Thu, 12th
St. Augustine IL Weather - Thursday, Nov 12, 2026 - Patchy Rain Nearby
Hi: 47°F 8°C
Lo: 37°F 3°C
Sunrise 06:45 AM
Sunset 04:46 PM
Wind NNW 16 mph26 km/h
Dew Point 31°F-1°C
Wind Chill 39°F4°C
Barometric Pressure 29.91 in1013 mb
POP 10% *
Humidity 56%
Fri, 13th
St. Augustine IL Weather - Friday, Nov 13, 2026 - Cloudy
Hi: 43°F 6°C
Lo: 31°F -1°C
Sunrise 06:46 AM
Sunset 04:45 PM
Wind N 14 mph22 km/h
Dew Point 26°F-3°C
Wind Chill 34°F1°C
Barometric Pressure 30.09 in1019 mb
POP 11% *
Humidity 54%
Sat, 14th
St. Augustine IL Weather - Saturday, Nov 14, 2026 - Sunny
Hi: 43°F 6°C
Lo: 30°F -1°C
Sunrise 06:47 AM
Sunset 04:44 PM
Wind NW 5 mph8 km/h
Dew Point 24°F-4°C
Wind Chill 40°F4°C
Barometric Pressure 30.21 in1023 mb
POP 2% *
Humidity 47%
Sun, 15th
St. Augustine IL Weather - Sunday, Nov 15, 2026 - Partly Cloudy
Hi: 48°F 9°C
Lo: 30°F -1°C
Sunrise 06:48 AM
Sunset 04:44 PM
Wind SSE 9 mph14 km/h
Dew Point 29°F-2°C
Wind Chill 44°F6°C
Barometric Pressure 30.21 in1023 mb
POP 5% *
Humidity 48%
Mon, 16th
St. Augustine IL Weather - Monday, Nov 16, 2026 - Overcast
Hi: 57°F 14°C
Lo: 42°F 6°C
Sunrise 06:50 AM
Sunset 04:43 PM
Wind SSE 8 mph12 km/h
Dew Point 42°F6°C
Wind Chill 55°F13°C
Barometric Pressure 30.18 in1022 mb
POP 14% *
Humidity 58%
Tue, 17th
St. Augustine IL Weather - Tuesday, Nov 17, 2026 - Partly Cloudy
Hi: 60°F 15°C
Lo: 47°F 9°C
Sunrise 06:51 AM
Sunset 04:42 PM
Wind SSW 8 mph13 km/h
Dew Point 44°F7°C
Wind Chill 60°F15°C
Barometric Pressure 30.27 in1025 mb
POP 6% *
Humidity 56%
Wed, 18th
St. Augustine IL Weather - Wednesday, Nov 18, 2026 - Partly Cloudy
Hi: 60°F 15°C
Lo: 51°F 10°C
Sunrise 06:52 AM
Sunset 04:41 PM
Wind SSE 6 mph10 km/h
Dew Point 45°F7°C
Wind Chill 59°F15°C
Barometric Pressure 30.33 in1027 mb
POP 8% *
Humidity 58%
Thu, 19th
St. Augustine IL Weather - Thursday, Nov 19, 2026 - Patchy Rain Nearby
Hi: 60°F 15°C
Lo: 48°F 9°C
Sunrise 06:53 AM
Sunset 04:41 PM
Wind SSE 11 mph18 km/h
Dew Point 42°F5°C
Wind Chill 60°F15°C
Barometric Pressure 30.24 in1024 mb
POP 11% *
Humidity 51%
Fri, 20th
St. Augustine IL Weather - Friday, Nov 20, 2026 - Light Rain
Hi: 53°F 12°C
Lo: 50°F 10°C
Sunrise 06:54 AM
Sunset 04:40 PM
Wind SSW 10 mph16 km/h
Dew Point 46°F8°C
Wind Chill 50°F10°C
Barometric Pressure 30.06 in1018 mb
POP 61% *
Humidity 75%
Sat, 21st
St. Augustine IL Weather - Saturday, Nov 21, 2026 - Partly Cloudy
Hi: 59°F 15°C
Lo: 47°F 8°C
Sunrise 06:55 AM
Sunset 04:39 PM
Wind WSW 6 mph9 km/h
Dew Point 45°F7°C
Wind Chill 59°F15°C
Barometric Pressure 29.97 in1015 mb
POP 8% *
Humidity 59%
Sun, 22nd
St. Augustine IL Weather - Sunday, Nov 22, 2026 - Patchy Light Drizzle
Hi: 52°F 11°C
Lo: 42°F 6°C
Sunrise 06:57 AM
Sunset 04:39 PM
Wind ENE 6 mph10 km/h
Dew Point 39°F4°C
Wind Chill 50°F10°C
Barometric Pressure 29.85 in1011 mb
POP 36% *
Humidity 61%
* POP = Probability of Precipitation. Data for 12:00 PM.
40.7
-90.4