Climate averages 1991–2020
Highlands Ranch weather
in January.
A cold, fairly 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 Highlands Ranch: daytime highs average 4.3°C and nights cool to about -10.5°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 22 mm of rain on roughly 5 days, which makes January a fairly dry month (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 9 h 43 min on an average January day.
The nearest other city in this atlas is Centennial (8 km away). In January its highs average 4.3°C, about as warm as Highlands Ranch, with 22 mm of rain.
Among the 498 cities listed in the United States, Highlands Ranch ranks joint 338th of 498 for the warmest January highs and joint 25th of 498 for the driest January (rainfall, lowest first). The mean January high of those 498 cities is 9.5°C; Highlands Ranch is 5.2°C cooler than that mean.
From January to February, average highs rise by 1.2°C to 5.5°C, and monthly rainfall rises from 22 mm to 24 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
Highlands Ranch climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 4.3°C-10.5°C | -10.5°C | 22 | 5.3 | 9.710 h |
| February | 5.5°C-9.6°C | -9.6°C | 24 | 5.7 | 10.711 h |
| March | 10.1°C-5.6°C | -5.6°C | 51 | 7.8 | 11.912 h |
| April | 13.6°C-1.5°C | -1.5°C | 75 | 10.0 | 13.213 h |
| May | 19.2°C4.5°C | 4.5°C | 88 | 12.5 | 14.314 h |
| June | 25.7°C10.3°C | 10.3°C | 57 | 9.6 | 14.915 h |
| July | 28.8°C13.9°C | 13.9°C | 56 | 9.7 | 14.715 h |
| August | 27.6°C13.2°C | 13.2°C | 47 | 9.3 | 13.714 h |
| September | 23.8°C8.9°C | 8.9°C | 39 | 6.3 | 12.512 h |
| October | 16.5°C1.8°C | 1.8°C | 42 | 6.3 | 11.211 h |
| November | 9.1°C-5.5°C | -5.5°C | 31 | 5.9 | 10.010 h |
| December | 3.8°C-10.6°C | -10.6°C | 22 | 4.9 | 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
- Centennial in JanuaryUnited States · 8 kmHigh 4.3°C · Low -10.1°C · 22 mm rain
- Lakewood in JanuaryUnited States · 19 kmHigh 4.7°C · Low -9.0°C · 22 mm rain
- Denver in JanuaryUnited States · 21 kmHigh 4.8°C · Low -9.4°C · 22 mm rain
- Aurora (Colorado), United States in JanuaryUnited States · 23 kmHigh 5.4°C · Low -7.9°C · 14 mm rain
- Arvada in JanuaryUnited States · 29 kmHigh 4.7°C · Low -9.7°C · 22 mm rain
- Westminster (Colorado), United States in JanuaryUnited States · 32 kmHigh 4.6°C · Low -9.6°C · 22 mm rain
- Thornton in JanuaryUnited States · 35 kmHigh 4.3°C · Low -9.7°C · 22 mm rain
- Boulder in JanuaryUnited States · 57 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 Highlands Ranch) is explained once on the Highlands Ranch year overview and on the Sources, method and limits page.
Centennial lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.