Climate averages 1991–2020
Aurora (Colorado), United States weather
in January.
A cold, very dry month: the 11th warmest and one of the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cold month in Aurora (Colorado), United States: daytime highs average 5.4°C and nights cool to about -7.9°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 14 mm of rain on roughly 4 days, which makes January a very dry month (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 9 h 42 min on an average January day.
The nearest other city in this atlas is Denver (13 km away). In January its highs average 4.8°C, 0.6°C cooler than Aurora (Colorado), United States, with 22 mm of rain.
Among the 498 cities listed in the United States, Aurora (Colorado), United States ranks joint 312th of 498 for the warmest January highs and joint 6th of 498 for the driest January (rainfall, lowest first). The mean January high of those 498 cities is 9.5°C; Aurora (Colorado), United States is 4.0°C cooler than that mean.
From January to February, average highs rise by 1.4°C to 6.9°C, and monthly rainfall stays at 14 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Aurora (Colorado), United States climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 5.4°C-7.9°C | -7.9°C | 14 | 3.8 | 9.710 h |
| February | 6.9°C-7.0°C | -7.0°C | 14 | 3.8 | 10.711 h |
| March | 11.7°C-3.0°C | -3.0°C | 35 | 5.7 | 11.912 h |
| April | 15.3°C0.9°C | 0.9°C | 55 | 8.1 | 13.213 h |
| May | 20.7°C6.7°C | 6.7°C | 63 | 9.3 | 14.314 h |
| June | 27.3°C12.4°C | 12.4°C | 40 | 7.6 | 14.915 h |
| July | 30.4°C16.0°C | 16.0°C | 38 | 7.5 | 14.715 h |
| August | 29.2°C15.2°C | 15.2°C | 34 | 6.3 | 13.714 h |
| September | 25.1°C10.8°C | 10.8°C | 27 | 4.8 | 12.512 h |
| October | 17.6°C3.6°C | 3.6°C | 30 | 5.1 | 11.211 h |
| November | 10.4°C-3.4°C | -3.4°C | 20 | 4.4 | 10.010 h |
| December | 5.0°C-8.0°C | -8.0°C | 14 | 3.4 | 9.49 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Denver in JanuaryUnited States · 13 kmHigh 4.8°C · Low -9.4°C · 22 mm rain
- Centennial in JanuaryUnited States · 17 kmHigh 4.3°C · Low -10.1°C · 22 mm rain
- Thornton in JanuaryUnited States · 20 kmHigh 4.3°C · Low -9.7°C · 22 mm rain
- Westminster (Colorado), United States in JanuaryUnited States · 21 kmHigh 4.6°C · Low -9.6°C · 22 mm rain
- Lakewood in JanuaryUnited States · 22 kmHigh 4.7°C · Low -9.0°C · 22 mm rain
- Highlands Ranch in JanuaryUnited States · 23 kmHigh 4.3°C · Low -10.5°C · 22 mm rain
- Arvada in JanuaryUnited States · 23 kmHigh 4.7°C · Low -9.7°C · 22 mm rain
- Boulder in JanuaryUnited States · 49 kmHigh 4.2°C · Low -8.7°C · 24 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Aurora) is explained once on the Aurora (Colorado), United States year overview and on the Sources, method and limits page.