Water Temperature of the Mississippi River in Keokuk, IA

Current Water Temperature

80.8°F

Measurement Time: Saturday, July 19, 2025, 11:45 PM CDT

Temperature Locations

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Local Points of Interest

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

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Mississippi River

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

Elevation Above Sea Level: 505 feet / 154 meters

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 (34.0 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 (77.0 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

77.2°F
Moderate or heavy rain with thunder
Conditions: Moderate or heavy rain with thunder
Humidity: 94%
Feels Like: 83.1°F
Wind: SSW 6.3 mph
Wind Gusts: 12.6 mph
Pressure: 29.91 in
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 6 mi
UV Index: 0

Five Day Weather Forecast

Moderate rain
Sun
H: 82°F
L: 75°F
Overcast
Mon
H: 87°F
L: 70°F
Sunny
Tue
H: 95°F
L: 74°F
Sunny
Wed
H: 94°F
L: 73°F
Sunny
Thu
H: 95°F
L: 73°F

Air Quality

PM2.5: 12.03 μg/m3
PM10: 14.62 μg/m3
Carbon Monoxide: 327.45 μg/m3
Nitrogen Dioxide: 9.99 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 93 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:11 PM
Sunset: 8:31 PM
Daylight: 14 hrs 39 mins
Moonrise: 1:19 AM
Moon Transit: 9:07 AM
Moonset: 5:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

8:37 AM - 11:07 AM
8:56 PM - 11:26 PM

Minor Periods

4:36 PM - 6:06 PM
12:49 AM - 2:19 AM

Action Rating: 3 out of 5

Flood Watch issued July 19 at 8:26PM CDT until July 20 at 1:00PM CDT by NWS Quad Cities IA IL

Effective: Sat July 19, 2025, 8:26 PM
Expires: Sun July 20, 2025, 1:00 PM

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Illinois, including the following areas, Hancock, Henderson, Henry IL, McDonough, Mercer, Rock Island and Warren, Iowa, including the following areas, Benton, Cedar, Clinton, Des Moines, Henry IA, Iowa, Jefferson, Johnson, Jones, Keokuk, Lee, Linn, Louisa, Muscatine, Scott, Van Buren and Washington, and northeast Missouri, including the following areas, Clark and Scotland. * WHEN...Through Sunday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Extensive street flooding and flooding of creeks and rivers are possible. * ADDITIONAL DETAILS... - Thunderstorms are expected across the watch area tonight into Sunday morning. Very high rainfall rates of 2 inches or greater in a short time are possible, which could lead to flash flooding particularly in urban areas. In addition, with the potential for repeated rounds of storms, some locations could receive 2 to 4 inches of rain with locally higher amounts possible. With saturated soils from previous rainfall, these rainfall rates and rainfall amounts will lead to an increased risk for flash flooding.

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.


Flood Watch issued July 19 at 8:26PM CDT until July 20 at 1:00PM CDT by NWS Quad Cities IA IL

Effective: Sat July 19, 2025, 8:26 PM
Expires: Sun July 20, 2025, 1:00 PM

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Illinois, including the following areas, Hancock, Henderson, Henry IL, McDonough, Mercer, Rock Island and Warren, Iowa, including the following areas, Benton, Cedar, Clinton, Des Moines, Henry IA, Iowa, Jefferson, Johnson, Jones, Keokuk, Lee, Linn, Louisa, Muscatine, Scott, Van Buren and Washington, and northeast Missouri, including the following areas, Clark and Scotland. * WHEN...Through Sunday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Extensive street flooding and flooding of creeks and rivers are possible. * ADDITIONAL DETAILS... - Thunderstorms are expected across the watch area tonight into Sunday morning. Very high rainfall rates of 2 inches or greater in a short time are possible, which could lead to flash flooding particularly in urban areas. In addition, with the potential for repeated rounds of storms, some locations could receive 2 to 4 inches of rain with locally higher amounts possible. With saturated soils from previous rainfall, these rainfall rates and rainfall amounts will lead to an increased risk for flash flooding.

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.


Flood Watch issued July 19 at 8:26PM CDT until July 20 at 1:00PM CDT by NWS Quad Cities IA IL

Effective: Sat July 19, 2025, 8:26 PM
Expires: Sun July 20, 2025, 1:00 PM

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Illinois, including the following areas, Hancock, Henderson, Henry IL, McDonough, Mercer, Rock Island and Warren, Iowa, including the following areas, Benton, Cedar, Clinton, Des Moines, Henry IA, Iowa, Jefferson, Johnson, Jones, Keokuk, Lee, Linn, Louisa, Muscatine, Scott, Van Buren and Washington, and northeast Missouri, including the following areas, Clark and Scotland. * WHEN...Through Sunday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Extensive street flooding and flooding of creeks and rivers are possible. * ADDITIONAL DETAILS... - Thunderstorms are expected across the watch area tonight into Sunday morning. Very high rainfall rates of 2 inches or greater in a short time are possible, which could lead to flash flooding particularly in urban areas. In addition, with the potential for repeated rounds of storms, some locations could receive 2 to 4 inches of rain with locally higher amounts possible. With saturated soils from previous rainfall, these rainfall rates and rainfall amounts will lead to an increased risk for flash flooding.

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.


Extreme Heat Watch issued July 20 at 12:29AM CDT until July 24 at 7:00PM CDT by NWS St Louis MO

Effective: Sun July 20, 2025, 12:29 AM
Expires: Sun July 20, 2025, 3:30 PM

* WHAT...Dangerously hot conditions with heat index values up to 110 possible. * WHERE...Portions of south central, southwest, and west central Illinois and northeast Missouri. * WHEN...From Tuesday afternoon through Thursday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...The long duration of this event is likely to worsen heat related impacts, and additional extensions may be needed beyond Thursday as forecast confidence increases.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.


Extreme Heat Watch issued July 20 at 12:29AM CDT until July 24 at 7:00PM CDT by NWS St Louis MO

Effective: Sun July 20, 2025, 12:29 AM
Expires: Sun July 20, 2025, 3:30 PM

* WHAT...Dangerously hot conditions with heat index values up to 110 possible. * WHERE...Portions of south central, southwest, and west central Illinois and northeast Missouri. * WHEN...From Tuesday afternoon through Thursday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...The long duration of this event is likely to worsen heat related impacts, and additional extensions may be needed beyond Thursday as forecast confidence increases.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.


Sunday, July 20, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 78°F
Average Humidity: 94%
Chance of Rain: 68%
Wind: 11.6 mph
UV Index: 1.9

Air Quality

AQI: 1 - Good
PM2.5: 12.96 μg/m3
PM10: 14.88 μg/m3
Carbon Monoxide: 346.91 μg/m3
Nitrogen Dioxide: 15.84 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 82.32 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:11 PM
Sunset: 8:31 PM
Daylight: 14 hrs 39 mins
Moonrise: 1:19 AM
Moon Transit: 9:07 AM
Moonset: 5:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

8:37 AM - 11:07 AM
8:56 PM - 11:26 PM

Minor Periods

4:36 PM - 6:06 PM
12:49 AM - 2:19 AM

Action Rating: 3 out of 5

Monday, July 21, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 76.4°F
Average Humidity: 90%
Chance of Rain: 0%
Wind: 12.1 mph
UV Index: 2.4

Air Quality

AQI: 1 - Good
PM2.5: 6.74 μg/m3
PM10: 7.27 μg/m3
Carbon Monoxide: 293.78 μg/m3
Nitrogen Dioxide: 8.68 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 85.92 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:12 PM
Sunset: 8:30 PM
Daylight: 14 hrs 37 mins
Moonrise: 2:06 AM
Moon Transit: 10:09 AM
Moonset: 6:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:39 AM - 12:09 AM

Minor Periods

5:48 PM - 7:18 PM
1:36 AM - 3:06 AM

Action Rating: 2 out of 5

Tuesday, July 22, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 84.1°F
Average Humidity: 77%
Chance of Rain: 0%
Wind: 11.6 mph
UV Index: 2.7

Air Quality

AQI: 1 - Good
PM2.5: 9.54 μg/m3
PM10: 11.36 μg/m3
Carbon Monoxide: 315.02 μg/m3
Nitrogen Dioxide: 8.13 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 91.84 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:12 PM
Sunset: 8:30 PM
Daylight: 14 hrs 35 mins
Moonrise: 3:03 AM
Moon Transit: 11:12 AM
Moonset: 7:21 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:42 AM - 1:12 PM

Minor Periods

6:51 PM - 8:21 PM
2:33 AM - 4:03 AM

Action Rating: 3 out of 5

Wednesday, July 23, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 82.7°F
Average Humidity: 74%
Chance of Rain: 0%
Wind: 12.8 mph
UV Index: 2.7

Air Quality

AQI: 1 - Good
PM2.5: 10.74 μg/m3
PM10: 13.48 μg/m3
Carbon Monoxide: 333.14 μg/m3
Nitrogen Dioxide: 9.02 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 71.62 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:12 PM
Sunset: 8:29 PM
Daylight: 14 hrs 34 mins
Moonrise: 4:11 AM
Moon Transit: 12:15 AM
Moonset: 8:11 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:45 AM - 2:15 PM

Minor Periods

7:41 PM - 9:11 PM
3:41 AM - 5:11 AM

Action Rating: 2 out of 5

Thursday, July 24, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 81°F
Average Humidity: 73%
Chance of Rain: 0%
Wind: 15.4 mph
UV Index: 0

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: 5:56 AM
Sun Transit: 1:12 PM
Sunset: 8:28 PM
Daylight: 14 hrs 32 mins
Moonrise: 5:24 AM
Moon Transit: 1:13 PM
Moonset: 8:51 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

12:03 AM - 2:33 AM
12:43 AM - 3:13 PM

Minor Periods

8:21 PM - 9:51 PM
4:54 AM - 6:24 AM

Action Rating: 5 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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