Monthly climate averages for Atchison, United States. Based on 10-year ERA5 reanalysis data.
Cfa Humid Subtropical
Climate OverviewAtchison, United States in December has cold conditions, with highs averaging around 7.4°C (45°F).
This month falls at the beginning of Winter. Cold conditions dominate the month.
Temperatures remain fairly steady throughout December, with daily highs around 7°C (45°F).
Rainfall is heaviest during the last third of the month, while the first third tends to be drier.
The warmest days tend to fall around the 3th, averaging 8.6°C (47°F).
Compared to November, this month is about 5°C cooler with 1 fewer rainy days. Temperatures begin dropping heading into January.
Daily averages based on historical data (2016–2025)
Cold daytime highs of 7°C (45°F) mean shorter outdoor excursions with warming breaks.
Rain is uncommon in this month, so most days stay dry from morning through evening.
2 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 3°C / -5°C | -1°C / -10°C | 7days (45 mm) Good | 6.2h Fair | 71% Muggy | 2.9 Moderate | Poor | View Details |
| February | 7°C / -4°C | 3°C / -9°C | 5days (30 mm) Good | 7.7h Good | 64% Muggy | 4 Moderate | Poor | View Details |
| March | 14°C / 3°C | 11°C / -1°C | 9days (78 mm) Wet | 7.8h Good | 64% Muggy | 5.1 High | Fair | View Details |
| April | 19°C / 8°C | 17°C / 4°C | 9days (101 mm) Wet | 9.4h Good | 61% Muggy | 6.1 High | Good | View Details |
| May best | 24°C / 14°C | 24°C / 13°C | 14days (176 mm) Wet | 9.7h Good | 69% Muggy | 7.1 Very High | Excellent | View Details |
| June best | 30°C / 20°C | 33°C / 21°C | 9days (96 mm) Wet | 12.1h Excellent | 66% Muggy | 7.7 Very High | Excellent | View Details |
| July | 31°C / 22°C | 35°C / 24°C | 9days (100 mm) Wet | 12.1h Excellent | 69% Muggy | 7.7 Very High | Fair | View Details |
| August best | 30°C / 21°C | 33°C / 23°C | 10days (111 mm) Wet | 11.3h Excellent | 70% Muggy | 7 High | Good | View Details |
| September best | 28°C / 18°C | 29°C / 18°C | 7days (66 mm) Good | 10h Excellent | 66% Muggy | 5.9 High | Excellent | View Details |
| October | 21°C / 11°C | 19°C / 8°C | 8days (97 mm) Wet | 8.2h Good | 62% Muggy | 4.4 Moderate | Good | View Details |
| November | 13°C / 3°C | 9°C / 0°C | 6days (58 mm) Good | 7h Good | 67% Muggy | 3 Moderate | Fair | View Details |
| December | 7°C / -2°C | 3°C / -6°C | 5days (40 mm) Good | 6.4h Fair | 68% Muggy | 2.4 Moderate | Poor | View Details |
Full winter gear is a must — insulated coat, thermal base layers, warm hat, gloves, and waterproof boots.
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