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

74°F
Partly Sunny
Partly Sunny
59%
NE 10 mph
59°F

Weather Forecast

Partly Sunny
This Afternoon
75°F - Partly Sunny
Partly Cloudy
Tonight
57°F - Partly Cloudy
Partly Sunny
Wednesday
77°F - Partly Sunny
Mostly Cloudy
Wednesday Night
57°F - Mostly Cloudy
Partly Sunny
Thursday
79°F - Partly Sunny
Partly Cloudy
Thursday Night
59°F - Partly Cloudy
Partly Sunny
Friday
81°F - Partly Sunny
Mostly Cloudy
Friday Night
56°F - Mostly Cloudy
Mostly Cloudy
Saturday
76°F - Mostly Cloudy
Mostly Cloudy then Slight Chance Rain Showers
Saturday Night
57°F - Mostly Cloudy then Slight Chance Rain Showers
Slight Chance Rain Showers
Sunday
81°F - Slight Chance Rain Showers
Partly Cloudy
Sunday Night
59°F - Partly Cloudy
Mostly Sunny
Monday
84°F - Mostly Sunny
Partly Cloudy then Slight Chance Rain Showers
Monday Night
62°F - Partly Cloudy then Slight Chance Rain Showers

Astronomical

Sunrise: 6:49 AM
Sun Transit: 12:53 AM
Sunset: 6:57 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:04 PM
Moon Transit: 10:13 PM
Moonset: 2:26 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

9:19 AM - 11:49 AM
12:00 AM - 12:00 AM

Minor Periods

4:34 PM - 6:04 PM
1:56 AM - 3:26 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: 6:49 AM
Sun Transit: 12:53 AM
Sunset: 6:57 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:04 PM
Moon Transit: 10:13 PM
Moonset: 2:26 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

9:19 AM - 11:49 AM
12:00 AM - 12:00 AM

Minor Periods

4:34 PM - 6:04 PM
1:56 AM - 3:26 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: 6:49 AM
Sun Transit: 12:53 AM
Sunset: 6:57 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:04 PM
Moon Transit: 10:13 PM
Moonset: 2:26 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

9:19 AM - 11:49 AM
12:00 AM - 12:00 AM

Minor Periods

4:34 PM - 6:04 PM
1:56 AM - 3:26 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: 6:49 AM
Sun Transit: 12:52 AM
Sunset: 6:56 PM
Daylight: 12 hrs 6 mins
Moonrise: 5:30 PM
Moon Transit: 10:57 PM
Moonset: 3:30 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

10:04 AM - 12:34 AM
12:00 AM - 12:00 AM

Minor Periods

5:00 PM - 6:30 PM
3:00 AM - 4:30 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: 6:49 AM
Sun Transit: 12:52 AM
Sunset: 6:56 PM
Daylight: 12 hrs 6 mins
Moonrise: 5:30 PM
Moon Transit: 10:57 PM
Moonset: 3:30 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

10:04 AM - 12:34 AM
12:00 AM - 12:00 AM

Minor Periods

5:00 PM - 6:30 PM
3:00 AM - 4:30 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: 6:50 AM
Sun Transit: 12:52 AM
Sunset: 6:54 PM
Daylight: 12 hrs 4 mins
Moonrise: 5:54 PM
Moon Transit: 11:41 PM
Moonset: 4:35 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

10:48 AM - 1:18 PM
12:00 AM - 12:00 AM

Minor Periods

5:24 PM - 6:54 PM
4:05 AM - 5:35 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: 6:50 AM
Sun Transit: 12:52 AM
Sunset: 6:54 PM
Daylight: 12 hrs 4 mins
Moonrise: 5:54 PM
Moon Transit: 11:41 PM
Moonset: 4:35 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

10:48 AM - 1:18 PM
12:00 AM - 12:00 AM

Minor Periods

5:24 PM - 6:54 PM
4:05 AM - 5:35 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: 6:51 AM
Sun Transit: 12:52 AM
Sunset: 6:53 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:18 PM
Moon Transit: 12:00 AM
Moonset: 5:39 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:48 PM - 7:18 PM
5:09 AM - 6:39 AM

Action Rating: 5 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: 6:51 AM
Sun Transit: 12:52 AM
Sunset: 6:53 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:18 PM
Moon Transit: 12:00 AM
Moonset: 5:39 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:48 PM - 7:18 PM
5:09 AM - 6:39 AM

Action Rating: 5 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: 6:52 AM
Sun Transit: 12:51 AM
Sunset: 6:51 PM
Daylight: 11 hrs 59 mins
Moonrise: 6:42 PM
Moon Transit: 7:33 AM
Moonset: 6:46 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

7:03 AM - 9:33 AM
7:03 AM - 9:33 AM

Minor Periods

6:12 PM - 7:42 PM
6:16 AM - 7:46 AM

Action Rating: 5 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: 6:52 AM
Sun Transit: 12:51 AM
Sunset: 6:51 PM
Daylight: 11 hrs 59 mins
Moonrise: 6:42 PM
Moon Transit: 7:33 AM
Moonset: 6:46 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

7:03 AM - 9:33 AM
7:03 AM - 9:33 AM

Minor Periods

6:12 PM - 7:42 PM
6:16 AM - 7:46 AM

Action Rating: 5 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: 6:53 AM
Sun Transit: 12:51 AM
Sunset: 6:50 PM
Daylight: 11 hrs 57 mins
Moonrise: 7:07 PM
Moon Transit: 1:12 AM
Moonset: 7:55 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:42 AM - 3:12 AM
1:04 PM - 3:34 PM

Minor Periods

6:37 PM - 8:07 PM
7:25 AM - 8:55 AM

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: 6:53 AM
Sun Transit: 12:51 AM
Sunset: 6:50 PM
Daylight: 11 hrs 57 mins
Moonrise: 7:07 PM
Moon Transit: 1:12 AM
Moonset: 7:55 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:42 AM - 3:12 AM
1:04 PM - 3:34 PM

Minor Periods

6:37 PM - 8:07 PM
7:25 AM - 8:55 AM

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: 6:54 AM
Sun Transit: 12:51 AM
Sunset: 6:48 PM
Daylight: 11 hrs 54 mins
Moonrise: 7:37 PM
Moon Transit: 2:00 AM
Moonset: 9:06 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
1:54 PM - 4:24 PM

Minor Periods

7:07 PM - 8:37 PM
8:36 AM - 10:06 AM

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: 6:54 AM
Sun Transit: 12:51 AM
Sunset: 6:48 PM
Daylight: 11 hrs 54 mins
Moonrise: 7:37 PM
Moon Transit: 2:00 AM
Moonset: 9:06 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
1:54 PM - 4:24 PM

Minor Periods

7:07 PM - 8:37 PM
8:36 AM - 10:06 AM

Action Rating: 4 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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