Water Temperature of the Mississippi River in Alton, IL

Current Water Temperature

32.0°F

Measurement Time: Sunday, January 25, 2026, 9:00 AM CST

Temperature Locations

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Local Points of Interest

Maple Island; St. Louis, MO; Wood River, IL; Edward "Ted" and Pat Jones-Confluence Point State Park

Mississippi River

Station Name: Alton 2SE - Melvin Price L&D
Data Source: USGS

Elevation Above Sea Level: 407 feet

Nearest Address:
Lock and Dam Way
Alton, IL 62002
Madison County

GPS Coordinates: 38.8664, -90.1464

Nearby Water Temperatures

Missouri River, St Charles, MO (18.4 mi)
Mississippi River, Cap Au Gris, MO (30.6 mi)
Missouri River, Labadle, MO (42.7 mi)
Mississippi River, Clarksville, MO (53.7 mi)
Illinois River, Florence, IL (58.4 mi)
Sugar Creek, Chatham, IL (60.7 mi)
Lick Creek, Springfield, IL (63.3 mi)
Big River, Bonne Terre, MO (66.4 mi)
Missouri River, Hermann, MO (70.4 mi)
Illinois River, La Grange, IL (77 mi)
Mississippi River, Saverton, MO (79.4 mi)
Huzzah Creek, Butts, MO (84.1 mi)
East Fork Black River, Lesterville, MO (98.3 mi)
Mississippi River, Quincy, IL (99.1 mi)
Mason Tazewell Drainage Ditch, Topeka, IL (101.6 mi)

Weather for Alton, Illinois

Current Weather

77°F
Clear
Clear
71%
S 5 mph
67°F

Weather Forecast

Clear
Overnight
73°F - Clear
Sunny
Tuesday
102°F - Sunny
Mostly Clear
Tuesday Night
77°F - Mostly Clear
Sunny
Wednesday
101°F - Sunny
Mostly Clear
Wednesday Night
80°F - Mostly Clear
Sunny
Thursday
101°F - Sunny
Mostly Clear
Thursday Night
80°F - Mostly Clear
Sunny
Friday
101°F - Sunny
Mostly Clear
Friday Night
78°F - Mostly Clear
Sunny
Saturday
100°F - Sunny
Slight Chance Showers And Thunderstorms
Saturday Night
75°F - Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And Thunderstorms
Sunday
97°F - Mostly Sunny then Slight Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms then Partly Cloudy
Sunday Night
72°F - Slight Chance Showers And Thunderstorms then Partly Cloudy
Mostly Sunny
Labor Day
95°F - Mostly Sunny

Astronomical

Sunrise: 6:30 AM
Sun Transit: 1:00 PM
Sunset: 7:30 PM
Daylight: 13 hrs 1 mins
Moonrise: 9:35 PM
Moon Transit: 4:05 AM
Moonset: 11:19 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:35 AM - 6:05 AM
4:00 PM - 6:30 PM

Minor Periods

9:05 PM - 10:35 PM
10:49 AM - 12:19 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 1:00 PM
Sunset: 7:30 PM
Daylight: 13 hrs 1 mins
Moonrise: 9:35 PM
Moon Transit: 4:05 AM
Moonset: 11:19 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:35 AM - 6:05 AM
4:00 PM - 6:30 PM

Minor Periods

9:05 PM - 10:35 PM
10:49 AM - 12:19 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 1:00 PM
Sunset: 7:30 PM
Daylight: 13 hrs 1 mins
Moonrise: 9:35 PM
Moon Transit: 4:05 AM
Moonset: 11:19 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:35 AM - 6:05 AM
4:00 PM - 6:30 PM

Minor Periods

9:05 PM - 10:35 PM
10:49 AM - 12:19 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 1:00 PM
Sunset: 7:30 PM
Daylight: 13 hrs 1 mins
Moonrise: 9:35 PM
Moon Transit: 4:05 AM
Moonset: 11:19 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:35 AM - 6:05 AM
4:00 PM - 6:30 PM

Minor Periods

9:05 PM - 10:35 PM
10:49 AM - 12:19 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 1:00 PM
Sunset: 7:29 PM
Daylight: 12 hrs 58 mins
Moonrise: 10:13 PM
Moon Transit: 4:57 AM
Moonset: 12:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:27 AM - 6:57 AM
4:54 PM - 7:24 PM

Minor Periods

9:43 PM - 11:13 PM
12:02 AM - 1:32 PM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 1:00 PM
Sunset: 7:29 PM
Daylight: 12 hrs 58 mins
Moonrise: 10:13 PM
Moon Transit: 4:57 AM
Moonset: 12:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:27 AM - 6:57 AM
4:54 PM - 7:24 PM

Minor Periods

9:43 PM - 11:13 PM
12:02 AM - 1:32 PM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 1:00 PM
Sunset: 7:27 PM
Daylight: 12 hrs 56 mins
Moonrise: 10:59 PM
Moon Transit: 5:54 AM
Moonset: 1:45 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:24 AM - 7:54 AM
5:52 PM - 8:22 PM

Minor Periods

10:29 PM - 11:59 PM
1:15 PM - 2:45 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 1:00 PM
Sunset: 7:27 PM
Daylight: 12 hrs 56 mins
Moonrise: 10:59 PM
Moon Transit: 5:54 AM
Moonset: 1:45 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:24 AM - 7:54 AM
5:52 PM - 8:22 PM

Minor Periods

10:29 PM - 11:59 PM
1:15 PM - 2:45 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 1:00 PM
Sunset: 7:26 PM
Daylight: 12 hrs 53 mins
Moonrise: 11:56 PM
Moon Transit: 6:54 AM
Moonset: 2:55 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:24 AM - 8:54 AM
6:54 PM - 9:24 PM

Minor Periods

12:00 AM - 12:00 AM
2:25 PM - 3:55 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 1:00 PM
Sunset: 7:26 PM
Daylight: 12 hrs 53 mins
Moonrise: 11:56 PM
Moon Transit: 6:54 AM
Moonset: 2:55 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:24 AM - 8:54 AM
6:54 PM - 9:24 PM

Minor Periods

12:00 AM - 12:00 AM
2:25 PM - 3:55 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 1:00 PM
Sunset: 7:24 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:56 AM
Moon Transit: 7:57 AM
Moonset: 3:57 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:27 AM - 9:57 AM
7:57 PM - 10:27 PM

Minor Periods

3:27 PM - 4:57 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 1:00 PM
Sunset: 7:24 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:56 AM
Moon Transit: 7:57 AM
Moonset: 3:57 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:27 AM - 9:57 AM
7:57 PM - 10:27 PM

Minor Periods

3:27 PM - 4:57 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:58 AM
Sunset: 7:23 PM
Daylight: 12 hrs 48 mins
Moonrise: 1:03 AM
Moon Transit: 9:00 AM
Moonset: 4:50 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
8:59 PM - 11:29 PM

Minor Periods

4:20 PM - 5:50 PM
12:33 AM - 2:03 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:58 AM
Sunset: 7:23 PM
Daylight: 12 hrs 48 mins
Moonrise: 1:03 AM
Moon Transit: 9:00 AM
Moonset: 4:50 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
8:59 PM - 11:29 PM

Minor Periods

4:20 PM - 5:50 PM
12:33 AM - 2:03 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:58 AM
Sunset: 7:21 PM
Daylight: 12 hrs 46 mins
Moonrise: 2:18 AM
Moon Transit: 10:00 AM
Moonset: 5:31 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:30 AM - 12:00 AM

Minor Periods

5:01 PM - 6:31 PM
1:48 AM - 3:18 AM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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