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Weather in Alton/St. Louis, Illinois

Current Conditions (Tuesday, December 3, 2024 at 10:50 America/Chicago time)

Temperature: 25°F (-4°C)
Wind chill: 18°F (-8°C)
Skies: mostly cloudy
Humidity: 73%
Wind: 6 mph (10 km/h); variable direction
Pressure: 1036
Dew Point: 18°F (-8°C)

Forecast Overview

Wed Dec 4
28°F 10°F
-2°C -12°C
Mostly sunny, with a few passing clouds.

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Thu Dec 5
48°F 25°F
9°C -4°C
More sun than clouds.

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Fri Dec 6
28°F 18°F
-2°C -8°C
Sunny skies.

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Sat Dec 7
36°F 21°F
2°C -6°C
Sunny skies.

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Sun Dec 8
46°F 27°F
8°C -3°C
Sunny skies.

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Mon Dec 9
54°F 34°F
12°C 1°C
Chance of rain in the afternoon.

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Tue Dec 10
59°F 50°F
15°C 10°C
Considerable cloudiness.

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Wed Dec 11
61°F 36°F
16°C 2°C
Chance of heavy rain before sunrise and in the afternoon. Chance of heavy snow late at night.

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Thu Dec 12
36°F 25°F
2°C -4°C
Chance of light snow before sunrise.

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Detailed Forecast

Wednesday, December 4

sunrise: 07:02 sunset: 16:38

Low around 11°F (-12°C), high around 29°F (-2°C).
Mostly sunny, with a few passing clouds.
Wind: 12 mph (19 km/h).

Time	Skies	Conditions	Temp	Wind	Humidity	Soil Moisture
00:00 03:00		Partly cloudy.	13°F (-11°C)	4 mph (6 km/h)	97%	0.274%
03:00 06:00		Clear.	14°F (-10°C)	4 mph (6 km/h)	96%	0.275%
06:00 09:00		Sunny.	19°F (-7°C)	4 mph (6 km/h)	87%	0.276%
09:00 12:00		Overcast.	26°F (-3°C)	7 mph (11 km/h)	78%	0.277%
12:00 15:00		Sunny.	29°F (-2°C)	8 mph (13 km/h)	79%	0.278%
15:00 18:00		Clear.	22°F (-5°C)	9 mph (14 km/h)	90%	0.279%
18:00 21:00		Clear.	24°F (-5°C)	11 mph (18 km/h)	84%	0.28%
21:00 00:00		Clear.	25°F (-4°C)	12 mph (19 km/h)	84%	0.281%

Thursday, December 5

sunrise: 07:03 sunset: 16:38

Low around 25°F (-4°C), high around 48°F (9°C).
More sun than clouds.
Wind: 18 mph (30 km/h).

Time	Skies	Conditions	Temp	Wind	Humidity	Soil Moisture
00:00 03:00		Clear.	27°F (-3°C)	13 mph (21 km/h)	83%	0.282%
03:00 06:00		Overcast.	32°F (-0°C)	13 mph (20 km/h)	83%	0.282%
06:00 09:00		Mostly cloudy.	38°F (3°C)	14 mph (23 km/h)	89%	0.286%
09:00 12:00		Times of sun and clouds.	46°F (8°C)	16 mph (26 km/h)	84%	0.302%
12:00 15:00		Sunny.	46°F (8°C)	17 mph (27 km/h)	81%	0.309%
15:00 18:00		Clear.	39°F (4°C)	15 mph (24 km/h)	82%	0.303%
18:00 21:00		Times of clear skies and clouds.	37°F (3°C)	17 mph (27 km/h)	79%	0.285%
21:00 00:00		Clear.	26°F (-3°C)	18 mph (30 km/h)	58%	0.278%

Friday, December 6

sunrise: 07:04 sunset: 16:37

Low around 18°F (-8°C), high around 28°F (-2°C).
Sunny skies.
Wind: 16 mph (26 km/h).

Time	Skies	Conditions	Temp	Wind	Humidity	Soil Moisture
00:00 03:00		Clear.	20°F (-7°C)	16 mph (26 km/h)	58%	0.277%
03:00 06:00		Clear.	18°F (-8°C)	13 mph (21 km/h)	59%	0.277%
06:00 09:00		Sunny.	20°F (-7°C)	14 mph (23 km/h)	51%	0.277%
09:00 12:00		Sunny.	25°F (-4°C)	12 mph (19 km/h)	42%	0.277%
12:00 15:00		Sunny.	27°F (-3°C)	10 mph (17 km/h)	39%	0.277%
15:00 18:00		Clear.	23°F (-5°C)	6 mph (9 km/h)	56%	0.277%
18:00 21:00		Clear.	22°F (-6°C)	4 mph (6 km/h)	60%	0.278%
21:00 00:00		Clear.	21°F (-6°C)	3 mph (4 km/h)	61%	0.279%

Saturday, December 7

sunrise: 07:05 sunset: 16:37

Low around 20°F (-6°C), high around 35°F (2°C).
Sunny skies.
Wind: 6 mph (10 km/h).

Time	Skies	Conditions	Temp	Wind	Humidity	Soil Moisture
00:00 03:00		Clear.	21°F (-6°C)	2 mph (3 km/h)	62%	0.281%
03:00 06:00		Clear.	20°F (-6°C)	1 mph (2 km/h)	61%	0.282%
06:00 09:00		Sunny.	25°F (-4°C)	4 mph (6 km/h)	49%	0.283%
09:00 12:00		Sunny.	33°F (0°C)	5 mph (8 km/h)	35%	0.284%
12:00 15:00		Sunny.	35°F (2°C)	5 mph (8 km/h)	35%	0.284%
15:00 18:00		Clear.	28°F (-2°C)	4 mph (6 km/h)	44%	0.284%
18:00 21:00		Clear.	28°F (-2°C)	6 mph (9 km/h)	46%	0.284%
21:00 00:00		Clear.	26°F (-3°C)	6 mph (10 km/h)	56%	0.285%

Sunday, December 8

sunrise: 07:06 sunset: 16:37

Low around 26°F (-3°C), high around 46°F (8°C).
Sunny skies.
Wind: 12 mph (19 km/h).

Time	Skies	Conditions	Temp	Wind	Humidity	Soil Moisture
00:00 03:00		Clear.	26°F (-3°C)	6 mph (10 km/h)	58%	0.285%
03:00 06:00		Clear.	27°F (-3°C)	7 mph (11 km/h)	63%	0.286%
06:00 09:00		Sunny.	34°F (1°C)	8 mph (13 km/h)	51%	0.287%
09:00 12:00		Sunny.	43°F (6°C)	12 mph (19 km/h)	40%	0.287%
12:00 15:00		Sunny.	45°F (7°C)	9 mph (14 km/h)	48%	0.285%
15:00 18:00		Clear.	36°F (2°C)	10 mph (16 km/h)	66%	0.279%
18:00 21:00		Clear.	35°F (2°C)	9 mph (15 km/h)	65%	0.275%
21:00 00:00		Clear.	34°F (1°C)	8 mph (13 km/h)	69%	0.271%

Monday, December 9

sunrise: 07:06 sunset: 16:38

Low around 34°F (1°C), high around 53°F (12°C).
Chance of rain late in the afternoon (between 3 pm and 6 pm). Estimated precipitation: 0.1 in (2.4375 mm).
Considerable cloudiness.
Wind: 15 mph (24 km/h).

Time	Skies	Conditions	Temp	Wind	Humidity	Soil Moisture
00:00 03:00		Clear.	35°F (2°C)	9 mph (15 km/h)	73%	0.268%
03:00 06:00		Clear.	35°F (2°C)	8 mph (13 km/h)	81%	0.265%
06:00 09:00		More clouds than sun.	41°F (5°C)	9 mph (15 km/h)	82%	0.263%
09:00 12:00		Overcast.	46°F (8°C)	10 mph (17 km/h)	85%	0.261%
12:00 15:00		Overcast.	50°F (10°C)	15 mph (24 km/h)	86%	0.259%
15:00 18:00		Chance of light rain. Precipitation: 0.03 in (0.75 mm).	46°F (8°C)	14 mph (22 km/h)	96%	0.264%
18:00 21:00		Overcast. Precipitation: 0.01 in (0.375 mm).	48°F (9°C)	12 mph (19 km/h)	97%	0.265%
21:00 00:00		Overcast. Precipitation: 0.05 in (1.3125 mm).	49°F (10°C)	11 mph (17 km/h)	98%	0.273%

Tuesday, December 10

sunrise: 07:07 sunset: 16:38

Low around 49°F (10°C), high around 60°F (15°C).
Estimated precipitation: 0.01 in (0.3125 mm).
Considerable cloudiness.
Wind: 10 mph (16 km/h).

Time	Skies	Conditions	Temp	Wind	Humidity	Soil Moisture
00:00 03:00		Overcast. Precipitation: 0 in (0.0625 mm).	50°F (10°C)	8 mph (13 km/h)	99%	0.27%
03:00 06:00		Overcast.	50°F (10°C)	9 mph (15 km/h)	97%	0.268%
06:00 09:00		A few passing clouds.	54°F (12°C)	8 mph (12 km/h)	87%	0.266%
09:00 12:00		Mostly cloudy.	59°F (15°C)	10 mph (16 km/h)	76%	0.264%
12:00 15:00		Mostly sunny.	59°F (15°C)	7 mph (12 km/h)	74%	0.261%
15:00 18:00		Mostly cloudy.	54°F (12°C)	5 mph (8 km/h)	87%	0.261%
18:00 21:00		Overcast. Precipitation: 0 in (0.0625 mm).	55°F (13°C)	5 mph (7 km/h)	94%	0.261%
21:00 00:00		Mostly cloudy. Precipitation: 0.01 in (0.1875 mm).	55°F (13°C)	5 mph (8 km/h)	97%	0.262%

Wednesday, December 11

sunrise: 07:08 sunset: 16:38

Low around 35°F (2°C), high around 61°F (16°C).
Chance of heavy rain before sunrise (between 3 am and 6 am) and then again in the afternoon (between 12 pm and 6 pm). Chance of heavy snow late at night (after 9 pm). Estimated precipitation: 0.83 in (21.125 mm).
Overcast skies.
Wind: 23 mph (36 km/h).

Time	Skies	Conditions	Temp	Wind	Humidity	Soil Moisture
00:00 03:00		Overcast. Precipitation: 0 in (0.125 mm).	56°F (13°C)	6 mph (10 km/h)	98%	0.263%
03:00 06:00		Chance of light rain. Precipitation: 0.01 in (0.3125 mm).	55°F (13°C)	6 mph (9 km/h)	94%	0.265%
06:00 09:00		Partly cloudy. Precipitation: 0 in (0.0625 mm).	56°F (14°C)	5 mph (7 km/h)	90%	0.265%
09:00 12:00		Overcast.	61°F (16°C)	5 mph (8 km/h)	80%	0.263%
12:00 15:00		Chance of rain. Precipitation: 0.23 in (5.875 mm).	59°F (15°C)	12 mph (20 km/h)	95%	0.304%
15:00 18:00		Chance of heavy rain. Precipitation: 0.54 in (13.8125 mm).	59°F (15°C)	23 mph (36 km/h)	92%	0.363%
18:00 21:00		Overcast. Precipitation: 0.03 in (0.8125 mm).	44°F (6°C)	14 mph (22 km/h)	91%	0.321%
21:00 00:00		Chance of light snow. Precipitation: 0 in (0.125 mm).	35°F (2°C)	21 mph (34 km/h)	91%	0.31%

Thursday, December 12

sunrise: 07:09 sunset: 16:38

Low around 25°F (-4°C), high around 35°F (2°C).
Chance of light snow between midnight and 3 am. Estimated precipitation: 0.01 in (0.375 mm).
More sun than clouds.
Wind: 20 mph (33 km/h).

Time	Skies	Conditions	Temp	Wind	Humidity	Soil Moisture
00:00 03:00		Chance of light snow. Precipitation: 0.01 in (0.3125 mm).	30°F (-1°C)	20 mph (33 km/h)	88%	0.304%
03:00 06:00		Overcast. Precipitation: 0 in (0.0625 mm).	27°F (-3°C)	17 mph (27 km/h)	81%	0.301%
06:00 09:00		Overcast.	26°F (-3°C)	15 mph (24 km/h)	71%	0.3%
09:00 12:00		Sunny.	31°F (-0°C)	13 mph (21 km/h)	60%	0.299%
12:00 15:00		More sun than clouds.	32°F (0°C)	12 mph (20 km/h)	59%	0.298%
15:00 18:00		A few passing clouds.	28°F (-2°C)	9 mph (15 km/h)	74%	0.298%
18:00 21:00		Clear.	26°F (-3°C)	8 mph (13 km/h)	80%	0.298%
21:00 00:00		Clear.	25°F (-4°C)	7 mph (12 km/h)	84%	0.299%

Climate Chart

» Alton/St. Louis Climate Chart

Places with a similar climate: Flora (IL), Cahokia / St. Louis (IL), Fairfield (IL), Belleville, Scott (IL), Salem (IL), St. Charles County (MO), Knob Noster City, Johnson County (MO), Farmington (MO), Columbia (MO), Mount Vernon (IL), Robinson (IL), Huntingburg (IN), Rolla / Vichy (MO), Centralia (IL), Warrensburg City, Johnson County (MO), Sedalia (MO), Mount Carmel (IL), Fort Leonard Wood, Pulaski County (MO), Carmi (IL), Effingham (IL), Sparta (IL), Lawrenceville (IL), Litchfield (IL), Taylorville (IL).

Temperature variation graph for the last seven days

Humidity Variation Graph

Wind speed

Weather Station: Alton/St. Louis, St. Louis Regional Airport (latitude 38-54N, longitude 090-03W)

Local Time:

Alton/St. Louis is in the "America/Chicago" timezone.

The "America/Chicago" timezone uses a Standard Time (ST) / Daylight Saving Time (DST) alternation scheme, and it currently is in ST (since Sunday, 3 November 2024, 01:00 AM local time). During ST, the timezone abbreviation is CST and the offset to Universal Time (UTC, GMT or Zulu) is -6:00 hours.

Alton/St. Louis will exit standard time (entering DST) on Sunday, 9 March 2025, at 02:00 AM local time, when clocks will be turned forward 1 hour to Sunday, 9 March 2025, 03:00 AM local daylight time. During DST, the timezone abbreviation is CDT and the offset to UTC will be -5:00 hours.