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United States weather

Weather in Jefferson County, Iowa for January 2026

Your guide to Jefferson County weather in January - trends and predictions

    Snow Forecast ❄️

  • With an average of 2 snowy days, Jefferson County usually enjoys a light touch of snow in January.
    According to Jefferson County snow forecast for January 2026, 6 snowy days are expected in the next 2 weeks. The closest date with snow is Thursday, January 15.

    • Temperatures

  • So far, January 2026 in Jefferson County shows a warmer trend than usual by 2.2 °F.

  • The forecast for the next days in Jefferson County predicts temperatures to be around 0 °F, close to the historical average.

  • In general, the average temperature in Jefferson County at the beginning of January is -0.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 3.1 °F by the end of January.

    • Rain 🌧️

  • With an average of 4 rainy days, Jefferson County experiences minimal rainfall in January.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
25
Dry days
Average rainy days
4
Rainy days
Average snowy days
2
Snow days
Average temperatures
-2°/-9°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
67 %
Avg humidity

Jefferson County Weather January

Move between months or click on a day
December
February
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Cloudy
0°
2
Patchy moderate snow
1°
3
Sunny
-1°
4
Overcast
-3°
5
Patchy moderate snow
-3°
6
Overcast
-1°
7
Overcast
1°
8
Overcast
1°
9
Overcast
2°
10
Light freezing rain
0°
11
Cloudy
1°
12
Overcast
3°
13
Sunny
15°
14
Overcast
2°
15
Overcast
-1°
16
Light snow
3°
17
Light freezing rain
-8°
18
Partly cloudy
-3°
19
Sunny
3°
20
Sunny
2°
21
Patchy moderate snow
-2°
22
Light freezing rain
-1°
23
Partly cloudy
-2°
24
Heavy freezing drizzle
0°
25
Light freezing rain
0°
26
Sunny
-8°
27
Sunny
5°
28
Sunny
7°
29
Sunny
7°
30
Overcast
6°
31
Heavy rain
5°

Temperatures trend during January in Jefferson County

See the weather trend as well as the moving average line

January weather in Jefferson County day by day

Click on a date for more information
December February
Date Weather Temperatures Rain Snow More
Jan. 1 Cloudy
Cloudy
 0° /-5° 0 mm 0 cm
Jan. 2 Patchy moderate snow
Patchy moderate snow
 1° /-4° 0.8 mm 0.3 cm
Jan. 3 Sunny
Sunny
 -1° /-5° 0 mm 0 cm
Jan. 4 Overcast
Overcast
 -3° /-8° 0 mm 0 cm
Jan. 5 Patchy moderate snow
Patchy moderate snow
 -3° /-4° 2 mm 0.6 cm
Jan. 6 Overcast
Overcast
 -1° /-5° 0.2 mm 0 cm
Jan. 7 Overcast
Overcast
 1° /-6° 0 mm 0 cm
Jan. 8 Overcast
Overcast
 1° /-5° 26.4 mm 0 cm
Jan. 9 Overcast
Overcast
 2° /-5° 0.5 mm 0 cm
Jan. 10 Light freezing rain
Light freezing rain
 0° /-3° 0.6 mm 0 cm
Jan. 11 Cloudy
Cloudy
 1° /-5° 0 mm 0 cm
Jan. 12 Overcast
Overcast
 3° /-3° 0 mm 0 cm
Jan. 13 Sunny
Sunny
 15° /2° 0 mm 0 cm
Jan. 14 Overcast
Overcast
 2° /-6° 0 mm 0 cm
Jan. 15 Overcast
Overcast
 -1° /-9° 0.1 mm 0 cm
Jan. 16 Light snow
Light snow
 3° /-5° 2.6 mm 1.9 cm
Jan. 17 Light freezing rain
Light freezing rain
 -8° /-14° 0.2 mm 0.1 cm
Jan. 18 Partly cloudy
Partly cloudy
 -3° /-15° 0 mm 0 cm
Jan. 19 Sunny
Sunny
 3° /-4° 0 mm 0 cm
Jan. 20 Sunny
Sunny
 2° /-4° 0 mm 0 cm
Jan. 21 Patchy moderate snow
Patchy moderate snow
 -2° /-5° 0.9 mm 0 cm
Jan. 22 Light freezing rain
Light freezing rain
 -1° /-3° 0.5 mm 0.1 cm
Jan. 23 Partly cloudy
Partly cloudy
 -2° /-6° 0.1 mm 0 cm
Jan. 24 Heavy freezing drizzle
Heavy freezing drizzle
 0° /-2° 1.7 mm 0 cm
Jan. 25 Light freezing rain
Light freezing rain
 0° /-7° 9.8 mm 0.1 cm
Jan. 26 Sunny
Sunny
 -8° /-13° 0 mm 0 cm
Jan. 27 Sunny
Sunny
 5° /-7° 0 mm 0 cm
Jan. 28 Sunny
Sunny
 7° /-4° 0 mm 0 cm
Jan. 29 Sunny
Sunny
 7° /-1° 0 mm 0 cm
Jan. 30 Overcast
Overcast
 6° /0° 0 mm 0 cm
Jan. 31 Heavy rain
Heavy rain
 5° /0° 40.5 mm 0 cm
Next
Important Notice
Our weather forecast for Jefferson County in January is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Jefferson County forecast closer to your planned date for the most up-to-date weather information.
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Jefferson County in January - FAQ

What are the expected maximum and minimum temperatures in Jefferson County during January?

Brace for cold days with temperatures not exceeding -2° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.

How much rainfall should be expected in Jefferson County during January?

In January, Jefferson County can expect light to moderate rainfall, totaling 48.4 mm across approximately 4 days. Occasional showers are possible, and planning ahead for them could be helpful.

Will it snow in Jefferson County in January 2026?

Jefferson County experiences an average snowfall of 1.7 cm during January, occurring over 2 days.

What are the typical wind conditions in Jefferson County during January?

The average wind speed in Jefferson County during January is 22 km/h, suggesting breezy to windy conditions, depending on your activities.

Jefferson County snow forecast January 2026

Track daily snowfall levels and discover Jefferson County’s snowy potential this January ❄️
On average, Jefferson County sees 2 snowy days during January, with approximately 1.7 cm of total snowfall.

January rainfall patterns in Jefferson County

Explore the daily rainfall trends and prepare for Jefferson Countys January weather 💧
Typically, Jefferson County has 4 rainy days in January with a total of 48.4 mm of rainfall.
Top locations in Jefferson County
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BeaumontBirminghamFairfieldLakewoodLouisvilleWatertown
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Location coordinates Where is Jefferson County?

Get accurate weather forecasts for Jefferson County, located at latitude 41.009 and longitude -91.963. Stay updated with localized weather information tailored for Jefferson County.

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