Jefferson County (Fairfield)
January
Weather in Jefferson County, Iowa for January 2026
Your guide to Jefferson County weather in January - trends and predictions
With an average of 2 snowy days, Jefferson County usually enjoys a light touch of snow in January.
In general, the average temperature in Jefferson County at the beginning of January is -3 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 4.4 °F by the end of January.
With an average of 4 rainy days, Jefferson County experiences minimal rainfall in January.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
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25
Dry days
4
Rainy days
2
Snow days
-2°/-9°
Temperatures
22 km/h
Avg max wind
67 %
Avg humidity
Jefferson County Weather January
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Temperatures trend during January in Jefferson County
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January weather in Jefferson County day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Jan. 1 |  Cloudy | 1° /-3° | 0 mm | 0 cm | |
| Jan. 2 |  Patchy moderate snow | 1° /-4° | 1.5 mm | 0.6 cm | |
| Jan. 3 |  Sunny | -2° /-7° | 0 mm | 0 cm | |
| Jan. 4 |  Overcast | -6° /-11° | 0 mm | 0 cm | |
| Jan. 5 | Patchy moderate snow | -6° /-7° | 3.9 mm | 1.2 cm | |
| Jan. 6 | Overcast | -4° /-10° | 0.3 mm | 0 cm | |
| Jan. 7 | Overcast | -5° /-11° | 0 mm | 0 cm | |
| Jan. 8 | Overcast | -7° /-12° | 0 mm | 0 cm | |
| Jan. 9 | Overcast | 0° /-10° | 0 mm | 0 cm | |
| Jan. 10 |  Light freezing rain | -1° /-4° | 1.2 mm | 0 cm | |
| Jan. 11 | Cloudy | 0° /-6° | 0 mm | 0 cm | |
| Jan. 12 | Overcast | 0° /-5° | 0 mm | 0 cm | |
| Jan. 13 | Sunny | -5° /-11° | 0 mm | 0 cm | |
| Jan. 14 | Sunny | -6° /-12° | 0.2 mm | 0 cm | |
| Jan. 15 | Cloudy | -4° /-13° | 0 mm | 0 cm | |
| Jan. 16 | Overcast | 1° /-3° | 0 mm | 0 cm | |
| Jan. 17 | Overcast | 4° /-3° | 0 mm | 0 cm | |
| Jan. 18 | Overcast | 0° /-9° | 0 mm | 0 cm | |
| Jan. 19 | Sunny | -10° /-17° | 0 mm | 0 cm | |
| Jan. 20 | Sunny | -9° /-17° | 0 mm | 0 cm | |
| Jan. 21 | Sunny | -13° /-21° | 0 mm | 0 cm | |
| Jan. 22 | Light freezing rain | -3° /-13° | 0.7 mm | 0 cm | |
| Jan. 23 | Cloudy | -5° /-13° | 0.1 mm | 0 cm | |
| Jan. 24 | Overcast | -3° /-16° | 0 mm | 0 cm | |
| Jan. 25 | Overcast | 2° /-4° | 0 mm | 0 cm | |
| Jan. 26 | Overcast | -1° /-9° | 0 mm | 0 cm | |
| Jan. 27 | Sunny | 5° /-7° | 0 mm | 0 cm | |
| Jan. 28 | Sunny | 7° /-4° | 0 mm | 0 cm | |
| Jan. 29 | Sunny | 7° /-1° | 0 mm | 0 cm | |
| Jan. 30 | Overcast | 6° /0° | 0 mm | 0 cm | |
| Jan. 31 |  Heavy rain | 5° /0° | 40.5 mm | 0 cm | |
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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
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January rainfall patterns in Jefferson County
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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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