Water Temperature of the Mississippi River in New Boston, IL

Current Water Temperature

32.0°F

Measurement Time: Tuesday, December 9, 2025, 9:10 AM CST

Temperature Locations

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Local Points of Interest

Wapello, IA; Port Louisa National Wildlife Refuge

Mississippi River

Station Name: New Boston 4NW - L&D 17
Data Source: USGS

Elevation Above Sea Level: 538 feet

Nearest Address:
100 Lock and Dam Rd
New Boston, IL 61272
Mercer County

GPS Coordinates: 41.1925, -91.0578

Nearby Water Temperatures

Mississippi River, Illinois City, IL (16.3 mi)
Mississippi River, Gladstone, IL (21.6 mi)
Mississippi River, Rock Island, IL (34.1 mi)
Mississippi River, Le Claire, IA (43.1 mi)
Mississippi River, Keokuk, IA (57.6 mi)
Mississippi River, Camanche, IA (58.2 mi)
Beaver Slough, Clinton, IA (62.7 mi)
Morgan Creek, Cedar Rapids, IA (65.9 mi)
Mississippi River, Fulton, IL (67.3 mi)
Mississippi River, Fulton, IL (67.5 mi)
North Fork Maquoketa River, Maquoketa, IA (69.3 mi)
Cedar River, Palo, IA (71.3 mi)
Des Moines River, Ottumwa, IA (71.6 mi)
Mississippi River, Canton, MO (76.3 mi)
Mississippi River, Bellevue, IA (80.8 mi)

Weather for New Boston, Illinois

Current Weather

57.7°F
Overcast
Overcast
54.8°F
59.4°F
94%
W 13.9 mph
19 mph
58.5°F
56.9°F
0 in
100%
9 mi
1010 mbar
0.6

Five Day Weather Forecast

Sunny
Thu
H: 79°F
L: 57°F
Heavy rain
Fri
H: 83°F
L: 56°F
Heavy rain
Sat
H: 54°F
L: 35°F
Sunny
Sun
H: 49°F
L: 35°F
Sunny
Mon
H: 64°F
L: 37°F

Air Quality

AQI: 1 - Good
PM2.5: 6.55 μg/m3
PM10: 9.95 μg/m3
Carbon Monoxide: 149.85 μg/m3
Nitrogen Dioxide: 1.45 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 109 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:04 PM
Sunset: 7:45 PM
Daylight: 13 hrs 22 mins
Moonrise: 5:40 AM
Moon Transit: 12:19 AM
Moonset: 7:12 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:49 AM - 2:19 PM

Minor Periods

6:42 PM - 8:12 PM
5:10 AM - 6:40 AM

Action Rating: 5 out of 5

Flood Watch issued April 15 at 9:26PM CDT by NWS Quad Cities IA IL

Effective: Wed April 15, 2026, 9:26 PM
Expires: Thu April 16, 2026, 9:30 PM

...The National Weather Service in Quad Cities IA IL has issued a Flood Watch for the following rivers in Illinois...Iowa... Mississippi River at Muscatine affecting Mercer, Louisa, Muscatine and Rock Island Counties. ...The Flood Watch is extended for the following rivers in Illinois...Iowa...Missouri... Mississippi River at Keithsburg affecting Mercer, Louisa, Des Moines and Henderson Counties. Mississippi River at New Boston LD17 affecting Mercer and Louisa Counties. Mississippi River at Gregory Landing affecting Clark and Hancock Counties. * WHAT...Flooding is possible. * WHERE...Mississippi River at Muscatine. * WHEN...From Monday evening until further notice. * IMPACTS...At 16.0 feet, Water affects the lower portion of the Riverside Park parking lot. * ADDITIONAL DETAILS... - At 8:15 PM CDT Wednesday the stage was 14.1 feet. - Forecast...Flood stage may be reached Monday evening. - Flood stage is 16.0 feet. - http://www.weather.gov/safety/flood

If you are in the watch area, remain alert to possible flooding. The next statement will be issued by Thursday evening at 930 PM CDT.


Flood Watch issued April 15 at 9:26PM CDT by NWS Quad Cities IA IL

Effective: Wed April 15, 2026, 9:26 PM
Expires: Thu April 16, 2026, 9:30 PM

...The National Weather Service in Quad Cities IA IL has issued a Flood Watch for the following rivers in Illinois...Iowa... Mississippi River at Muscatine affecting Mercer, Louisa, Muscatine and Rock Island Counties. ...The Flood Watch is extended for the following rivers in Illinois...Iowa...Missouri... Mississippi River at Keithsburg affecting Mercer, Louisa, Des Moines and Henderson Counties. Mississippi River at New Boston LD17 affecting Mercer and Louisa Counties. Mississippi River at Gregory Landing affecting Clark and Hancock Counties. * WHAT...Flooding is possible. * WHERE...Mississippi River at New Boston LD17. * WHEN...From Saturday morning until further notice. * ADDITIONAL DETAILS... - At 9:10 PM CDT Wednesday the stage was 14.1 feet. - Forecast...Flood stage may be reached Saturday morning. - Flood stage is 15.0 feet. - http://www.weather.gov/safety/flood

If you are in the watch area, remain alert to possible flooding. The next statement will be issued by Thursday evening at 930 PM CDT.


Flood Watch issued April 15 at 9:26PM CDT by NWS Quad Cities IA IL

Effective: Wed April 15, 2026, 9:26 PM
Expires: Thu April 16, 2026, 9:30 PM

...The National Weather Service in Quad Cities IA IL has issued a Flood Watch for the following rivers in Illinois...Iowa... Mississippi River at Muscatine affecting Mercer, Louisa, Muscatine and Rock Island Counties. ...The Flood Watch is extended for the following rivers in Illinois...Iowa...Missouri... Mississippi River at Keithsburg affecting Mercer, Louisa, Des Moines and Henderson Counties. Mississippi River at New Boston LD17 affecting Mercer and Louisa Counties. Mississippi River at Gregory Landing affecting Clark and Hancock Counties. * WHAT...Flooding is possible. * WHERE...Mississippi River at Keithsburg. * WHEN...From Friday afternoon until further notice. * IMPACTS...At 14.5 feet, Water affects low lying areas in Oquawka. * ADDITIONAL DETAILS... - At 8:30 PM CDT Wednesday the stage was 13.7 feet. - Forecast...Flood stage may be reached early Friday afternoon. - Flood stage is 14.0 feet. - http://www.weather.gov/safety/flood

If you are in the watch area, remain alert to possible flooding. The next statement will be issued by Thursday evening at 930 PM CDT.


Flood Warning issued April 15 at 9:26PM CDT by NWS Quad Cities IA IL

Effective: Wed April 15, 2026, 9:26 PM
Expires: Thu April 16, 2026, 9:30 PM

...The Flood Warning continues for the following rivers in Illinois...Iowa... Mississippi River at Burlington affecting Lee, Des Moines, Hancock and Henderson Counties. Mississippi River at Gladstone LD18 affecting Des Moines and Henderson Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Burlington. * WHEN...Until further notice. * IMPACTS...At 16.0 feet, Water affects low lying buildings and homes in Montrose and Niota. * ADDITIONAL DETAILS... - At 9:00 PM CDT Wednesday the stage was 15.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:00 PM CDT Wednesday was 15.4 feet. - Forecast...The river is expected to rise to 16.3 feet Wednesday, April 22. Additional rises are possible thereafter. - Flood stage is 15.0 feet.

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Caution is urged when walking near riverbanks. The next statement will be issued by Thursday evening at 930 PM CDT.


Flood Warning issued April 15 at 9:26PM CDT by NWS Quad Cities IA IL

Effective: Wed April 15, 2026, 9:26 PM
Expires: Thu April 16, 2026, 9:30 PM

...The Flood Warning continues for the following rivers in Illinois...Iowa... Mississippi River at Burlington affecting Lee, Des Moines, Hancock and Henderson Counties. Mississippi River at Gladstone LD18 affecting Des Moines and Henderson Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Gladstone LD18. * WHEN...Until further notice. * ADDITIONAL DETAILS... - At 9:00 PM CDT Wednesday the stage was 10.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:00 PM CDT Wednesday was 10.5 feet. - Forecast...The river is expected to rise to 11.4 feet Wednesday, April 22. Additional rises are possible thereafter. - Flood stage is 10.0 feet.

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Caution is urged when walking near riverbanks. The next statement will be issued by Thursday evening at 930 PM CDT.
Thursday, April 16, 2026

Weather Forecast

Sunny
79.3°F
57.2°F
66.3°F
75%
0 in
0%
0%
15.7 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 6.91 μg/m3
PM10: 8.66 μg/m3
Carbon Monoxide: 153.57 μg/m3
Nitrogen Dioxide: 3 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 82.28 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:04 PM
Sunset: 7:45 PM
Daylight: 13 hrs 22 mins
Moonrise: 5:40 AM
Moon Transit: 12:19 AM
Moonset: 7:12 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:49 AM - 2:19 PM

Minor Periods

6:42 PM - 8:12 PM
5:10 AM - 6:40 AM

Action Rating: 5 out of 5

Friday, April 17, 2026

Weather Forecast

Heavy rain
83.1°F
55.9°F
69.7°F
81%
1.17 in
87%
0%
27.5 mph
1.6


Air Quality

AQI: 1 - Good
PM2.5: 5.89 μg/m3
PM10: 6.85 μg/m3
Carbon Monoxide: 160.57 μg/m3
Nitrogen Dioxide: 3.83 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 81.28 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 1:03 PM
Sunset: 7:46 PM
Daylight: 13 hrs 25 mins
Moonrise: 6:07 AM
Moon Transit: 1:11 PM
Moonset: 8:32 PM
Moon Phase: New
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

12:06 AM - 2:36 AM
12:41 AM - 3:11 PM

Minor Periods

8:02 PM - 9:32 PM
5:37 AM - 7:07 AM

Action Rating: 4 out of 5

Saturday, April 18, 2026

Weather Forecast

Heavy rain
54.3°F
34.7°F
45.3°F
67%
1.76 in
88%
0%
22.4 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 3.85 μg/m3
PM10: 4.13 μg/m3
Carbon Monoxide: 156.49 μg/m3
Nitrogen Dioxide: 2.38 μg/m3
Sulphur Dioxide: 1.22 μg/m3
Ozone: 80.68 μg/m3

Astronomical

Sunrise: 6:20 AM
Sun Transit: 1:03 PM
Sunset: 7:48 PM
Daylight: 13 hrs 27 mins
Moonrise: 6:38 AM
Moon Transit: 2:08 PM
Moonset: 9:53 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

1:00 AM - 3:30 AM
1:38 PM - 4:08 PM

Minor Periods

9:23 PM - 10:53 PM
6:08 AM - 7:38 AM

Action Rating: 4 out of 5

Sunday, April 19, 2026

Weather Forecast

Sunny
48.9°F
35.1°F
42.1°F
54%
0 in
0%
0%
16.6 mph
1.6


Air Quality

AQI: 1 - Good
PM2.5: 3.58 μg/m3
PM10: 4.32 μg/m3
Carbon Monoxide: 154 μg/m3
Nitrogen Dioxide: 3.11 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 80.16 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 1:03 PM
Sunset: 7:49 PM
Daylight: 13 hrs 30 mins
Moonrise: 7:16 AM
Moon Transit: 3:09 PM
Moonset: 11:12 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

1:59 AM - 4:29 AM
2:39 PM - 5:09 PM

Minor Periods

12:00 AM - 12:00 AM
6:46 AM - 8:16 AM

Action Rating: 3 out of 5

Monday, April 20, 2026

Weather Forecast

Sunny
63.8°F
36.5°F
47.8°F
64%
0 in
0%
0%
20.4 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 6.64 μg/m3
PM10: 7.57 μg/m3
Carbon Monoxide: 191.97 μg/m3
Nitrogen Dioxide: 6.34 μg/m3
Sulphur Dioxide: 1.4 μg/m3
Ozone: 67.15 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 1:03 PM
Sunset: 7:50 PM
Daylight: 13 hrs 32 mins
Moonrise: 8:06 AM
Moon Transit: 4:13 PM
Moonset: 12:12 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

3:02 AM - 5:32 AM
3:43 PM - 6:13 PM

Minor Periods

7:36 AM - 9:06 AM
12:00 AM - 12:00 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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