Weather for Jefferson, Iowa
Current Weather
80.2°F
Partly cloudy
78.6°F
78.2°F
23%
S 21.3 mph
24.7 mph
79.9°F
45.6°F
0 in
75%
9 mi
1009 mbar
4.2
Five Day Weather Forecast
Thu
H: 82°F
L: 48°F
Fri
H: 86°F
L: 55°F
Sat
H: 78°F
L: 61°F
Sun
H: 85°F
L: 66°F
Mon
H: 84°F
L: 62°F
Air Quality
AQI:
1 - Good
PM2.5:
5.15 μg/m3
PM10:
5.65 μg/m3
Carbon Monoxide: 148.85 μg/m3
Nitrogen Dioxide: 3.15 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 93 μg/m3
Nitrogen Dioxide: 3.15 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 93 μg/m3
Astronomical
Sunrise: 5:58 AM
Sun Transit: 1:13 PM
Sunset: 8:31 PM
Daylight: 14 hrs 33 mins
Sun Transit: 1:13 PM
Sunset: 8:31 PM
Daylight: 14 hrs 33 mins
Moonrise: 4:17 AM
Moon Transit: 11:09 AM
Moonset: 6:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%
Moon Transit: 11:09 AM
Moonset: 6:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:39 AM - 1:09 PM
Minor Periods
5:48 PM - 7:18 PM3:47 AM - 5:17 AM
Action Rating: 2 out of 5
Special Weather Statement issued May 14 at 9:30AM CDT by NWS Des Moines IA
Effective: Thu May 14, 2026, 9:30 AM
Expires: Thu May 14, 2026, 2:00 PM
WHAT...The wind will become gusty from the south today with sustained winds at 20 to 30 mph and gusts up to around 40 mph. The wind may cause localized blowing dust, especially over open fields. In addition, elevated fire weather conditions may occur due to these winds and dry conditions. WHERE...Along and north of Highway 20 and along and west of Interstate 35. WHEN..At least through mid this afternoon. IMPACTS...Unsecured outdoor objects may be blown around and smaller tree branches may break. Visibility may be reduced due to blowing dust. Any fires that ignite may spread rapidly. PREPAREDNESS AND PRECAUTIONARY ACTIONS...Use extra caution when driving, especially if operating a high profile vehicle on east/west roads, and be prepared for rapidly changing conditions and reduced visibility. Burning is discouraged.
Thursday, May 14, 2026
Weather Forecast
Sunny
82.2°F
48.2°F
66.4°F
39%
0 in
0%
0%
21.3 mph
7.8
Air Quality
AQI:
1 - Good
PM2.5:
6.03 μg/m3
PM10:
6.79 μg/m3
Carbon Monoxide: 149.25 μg/m3
Nitrogen Dioxide: 5.89 μg/m3
Sulphur Dioxide: 1.28 μg/m3
Ozone: 72.84 μg/m3
Nitrogen Dioxide: 5.89 μg/m3
Sulphur Dioxide: 1.28 μg/m3
Ozone: 72.84 μg/m3
Astronomical
Sunrise: 5:58 AM
Sun Transit: 1:13 PM
Sunset: 8:31 PM
Daylight: 14 hrs 33 mins
Sun Transit: 1:13 PM
Sunset: 8:31 PM
Daylight: 14 hrs 33 mins
Moonrise: 4:17 AM
Moon Transit: 11:09 AM
Moonset: 6:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%
Moon Transit: 11:09 AM
Moonset: 6:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:39 AM - 1:09 PM
Minor Periods
5:48 PM - 7:18 PM3:47 AM - 5:17 AM
Action Rating: 2 out of 5
Friday, May 15, 2026
Weather Forecast
Moderate rain
85.6°F
55°F
70.9°F
62%
0.45 in
79%
0%
14.8 mph
8.3
Air Quality
AQI:
1 - Good
PM2.5:
5.53 μg/m3
PM10:
6.38 μg/m3
Carbon Monoxide: 152.97 μg/m3
Nitrogen Dioxide: 3.92 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 91.92 μg/m3
Nitrogen Dioxide: 3.92 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 91.92 μg/m3
Astronomical
Sunrise: 5:57 AM
Sun Transit: 1:13 PM
Sunset: 8:32 PM
Daylight: 14 hrs 35 mins
Sun Transit: 1:13 PM
Sunset: 8:32 PM
Daylight: 14 hrs 35 mins
Moonrise: 4:45 AM
Moon Transit: 12:04 AM
Moonset: 7:39 PM
Moon Phase: New
Moon Illumination: 0.1%
Moon Transit: 12:04 AM
Moonset: 7:39 PM
Moon Phase: New
Moon Illumination: 0.1%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:34 AM - 2:04 PM
Minor Periods
7:09 PM - 8:39 PM4:15 AM - 5:45 AM
Action Rating: 5 out of 5
Saturday, May 16, 2026
Weather Forecast
Moderate rain
78.1°F
60.9°F
68.7°F
85%
0.32 in
89%
0%
11 mph
5.3
Air Quality
AQI:
1 - Good
PM2.5:
6.03 μg/m3
PM10:
7.36 μg/m3
Carbon Monoxide: 145.9 μg/m3
Nitrogen Dioxide: 4.54 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 97.84 μg/m3
Nitrogen Dioxide: 4.54 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 97.84 μg/m3
Astronomical
Sunrise: 5:56 AM
Sun Transit: 1:13 PM
Sunset: 8:33 PM
Daylight: 14 hrs 37 mins
Sun Transit: 1:13 PM
Sunset: 8:33 PM
Daylight: 14 hrs 37 mins
Moonrise: 5:19 AM
Moon Transit: 1:03 PM
Moonset: 9:02 PM
Moon Phase: New
Moon Illumination: 2.0%
Moon Transit: 1:03 PM
Moonset: 9:02 PM
Moon Phase: New
Moon Illumination: 2.0%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:33 AM - 3:03 PM
Minor Periods
8:32 PM - 10:02 PM4:49 AM - 6:19 AM
Action Rating: 5 out of 5
Sunday, May 17, 2026
Weather Forecast
Moderate rain
85.2°F
66.2°F
73.6°F
79%
0.33 in
87%
0%
26.4 mph
6.2
Air Quality
AQI:
1 - Good
PM2.5:
5.54 μg/m3
PM10:
6.57 μg/m3
Carbon Monoxide: 165.21 μg/m3
Nitrogen Dioxide: 3.87 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 87.48 μg/m3
Nitrogen Dioxide: 3.87 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 87.48 μg/m3
Astronomical
Sunrise: 5:55 AM
Sun Transit: 1:13 PM
Sunset: 8:34 PM
Daylight: 14 hrs 39 mins
Sun Transit: 1:13 PM
Sunset: 8:34 PM
Daylight: 14 hrs 39 mins
Moonrise: 6:03 AM
Moon Transit: 2:08 PM
Moonset: 10:22 PM
Moon Phase: New
Moon Illumination: 0.2%
Moon Transit: 2:08 PM
Moonset: 10:22 PM
Moon Phase: New
Moon Illumination: 0.2%
Best Times for Fishing or Hunting
Major Periods
12:30 AM - 3:00 AM1:38 PM - 4:08 PM
Minor Periods
9:52 PM - 11:22 PM5:33 AM - 7:03 AM
Action Rating: 4 out of 5
Monday, May 18, 2026
Weather Forecast
Heavy rain
83.9°F
61.6°F
73.3°F
75%
0.99 in
88%
0%
24.6 mph
8.1
Air Quality
AQI:
1 - Good
PM2.5:
6.47 μg/m3
PM10:
7.83 μg/m3
Carbon Monoxide: 162.77 μg/m3
Nitrogen Dioxide: 2.83 μg/m3
Sulphur Dioxide: 1.76 μg/m3
Ozone: 86.85 μg/m3
Nitrogen Dioxide: 2.83 μg/m3
Sulphur Dioxide: 1.76 μg/m3
Ozone: 86.85 μg/m3
Astronomical
Sunrise: 5:54 AM
Sun Transit: 1:13 PM
Sunset: 8:35 PM
Daylight: 14 hrs 41 mins
Sun Transit: 1:13 PM
Sunset: 8:35 PM
Daylight: 14 hrs 41 mins
Moonrise: 7:00 AM
Moon Transit: 3:15 PM
Moonset: 11:30 PM
Moon Phase: New
Moon Illumination: 2.6%
Moon Transit: 3:15 PM
Moonset: 11:30 PM
Moon Phase: New
Moon Illumination: 2.6%
Best Times for Fishing or Hunting
Major Periods
1:35 AM - 4:05 AM2:45 PM - 5:15 PM
Minor Periods
12:00 AM - 12:00 AM6:30 AM - 8:00 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.