Water Temperature of the Mississippi River in Keokuk, IA

Current Water Temperature

66.4°F

Measurement Time: Saturday, May 16, 2026, 6:45 PM CDT

Temperature Locations

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Local Points of Interest

Hamilton, IL; Montebello State Park; Victory Park; Lock and Dam 19

Mississippi River

Station Name: Mississippi River at Keokuk, IA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 505 feet

Nearest Address:
434 N Water St
Keokuk, IA 52632
Lee County

GPS Coordinates: 40.39365535, -91.374318

Nearby Water Temperatures

Mississippi River, Canton, MO (18.8 mi)
Mississippi River, Quincy, IL (34 mi)
Mississippi River, Gladstone, IL (38.4 mi)
Mississippi River, Saverton, MO (52.8 mi)
Illinois River, La Grange, IL (54.3 mi)
Mississippi River, New Boston, IL (57.6 mi)
Illinois River, Florence, IL (66.4 mi)
Des Moines River, Ottumwa, IA (69.1 mi)
Mississippi River, Illinois City, IL (73.8 mi)
Long Branch Lake, Macon, MO (74.5 mi)
Mississippi River, Clarksville, MO (74.7 mi)
Mason Tazewell Drainage Ditch, Topeka, IL (77 mi)
Mississippi River, Rock Island, IL (88.4 mi)
Illinois River, Peoria, IL (93.4 mi)
Mississippi River, Le Claire, IA (96.1 mi)

Weather for Keokuk, Iowa

Current Weather

68.5°F
Mist
Mist
68.5°F
64°F
100%
ESE 5.4 mph
10.2 mph
64°F
59.6°F
0.09 in
100%
6 mi
1011 mbar
0

Five Day Weather Forecast

Heavy rain
Sun
H: 84°F
L: 63°F
Moderate rain
Mon
H: 84°F
L: 72°F
Moderate rain
Tue
H: 72°F
L: 53°F
Sunny
Wed
H: 63°F
L: 44°F
Sunny
Thu
H: 63°F
L: 47°F

Air Quality

PM2.5: 5.85 μg/m3
PM10: 6.15 μg/m3
Carbon Monoxide: 157.85 μg/m3
Nitrogen Dioxide: 5.65 μg/m3
Sulphur Dioxide: 2.05 μg/m3
Ozone: 59 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:01 PM
Sunset: 8:17 PM
Daylight: 14 hrs 30 mins
Moonrise: 5:57 AM
Moon Transit: 1:55 PM
Moonset: 10:02 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:41 AM - 3:11 AM
1:25 PM - 3:55 PM

Minor Periods

9:32 PM - 11:02 PM
5:27 AM - 6:57 AM

Action Rating: 4 out of 5

Sunday, May 17, 2026

Weather Forecast

Heavy rain
84.2°F
63.1°F
73.1°F
80%
1.4 in
87%
0%
19 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 6.6 μg/m3
PM10: 7.6 μg/m3
Carbon Monoxide: 148.37 μg/m3
Nitrogen Dioxide: 3.9 μg/m3
Sulphur Dioxide: 1.83 μg/m3
Ozone: 79.88 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:01 PM
Sunset: 8:17 PM
Daylight: 14 hrs 30 mins
Moonrise: 5:57 AM
Moon Transit: 1:55 PM
Moonset: 10:02 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:41 AM - 3:11 AM
1:25 PM - 3:55 PM

Minor Periods

9:32 PM - 11:02 PM
5:27 AM - 6:57 AM

Action Rating: 4 out of 5

Monday, May 18, 2026

Weather Forecast

Moderate rain
83.5°F
71.7°F
76.6°F
80%
0.24 in
87%
0%
20.6 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 5.5 μg/m3
PM10: 6.43 μg/m3
Carbon Monoxide: 143.69 μg/m3
Nitrogen Dioxide: 3.05 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 70.8 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:01 PM
Sunset: 8:18 PM
Daylight: 14 hrs 32 mins
Moonrise: 6:55 AM
Moon Transit: 3:02 PM
Moonset: 11:11 PM
Moon Phase: New
Moon Illumination: 2.6%

Best Times for Fishing or Hunting

Major Periods

1:47 AM - 4:17 AM
2:32 PM - 5:02 PM

Minor Periods

12:00 AM - 12:00 AM
6:25 AM - 7:55 AM

Action Rating: 3 out of 5

Tuesday, May 19, 2026

Weather Forecast

Moderate rain
72.1°F
53.4°F
63.6°F
86%
0.4 in
83%
0%
17.2 mph
4.7


Air Quality

AQI: 1 - Good
PM2.5: 4.12 μg/m3
PM10: 4.75 μg/m3
Carbon Monoxide: 136.22 μg/m3
Nitrogen Dioxide: 2.4 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 63.28 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:02 PM
Sunset: 8:19 PM
Daylight: 14 hrs 34 mins
Moonrise: 8:04 AM
Moon Transit: 4:08 PM
Moonset: 12:11 AM
Moon Phase: Waxing Crescent
Moon Illumination: 7.4%

Best Times for Fishing or Hunting

Major Periods

2:54 AM - 5:24 AM
3:38 PM - 6:08 PM

Minor Periods

7:34 AM - 9:04 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, May 20, 2026

Weather Forecast

Sunny
62.5°F
43.9°F
53.7°F
71%
0 in
0%
0%
10.7 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 1.83 μg/m3
PM10: 1.83 μg/m3
Carbon Monoxide: 135.89 μg/m3
Nitrogen Dioxide: 4.15 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 56.31 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:02 PM
Sunset: 8:20 PM
Daylight: 14 hrs 35 mins
Moonrise: 9:19 AM
Moon Transit: 5:10 PM
Moonset: 12:07 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

3:59 AM - 6:29 AM
4:40 PM - 7:10 PM

Minor Periods

8:49 AM - 10:19 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, May 21, 2026

Weather Forecast

Sunny
62.7°F
46.6°F
53.9°F
70%
0 in
0%
0%
11 mph
0.3


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: 5:44 AM
Sun Transit: 1:02 PM
Sunset: 8:21 PM
Daylight: 14 hrs 37 mins
Moonrise: 10:37 AM
Moon Transit: 6:06 PM
Moonset: 12:50 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%

Best Times for Fishing or Hunting

Major Periods

4:58 AM - 7:28 AM
5:36 PM - 8:06 PM

Minor Periods

10:07 AM - 11:37 AM
12:20 AM - 1:50 AM

Action Rating: 3 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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