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Highlands Ranch Weather by Month
Average temperatures, rainfall and humidity for Highlands Ranch, United States, month by month, built from OpenWeather's historical records. Use it to see what a typical Highlands Ranch month looks like before you travel — then check the live Highlands Ranch forecast for the days ahead.
Warmest month
July
31°C average high
Coolest month
January
-6°C average low
Wettest month
May
99 mm of rain
Driest month
December
5 mm of rain
Average temperature and rainfall in Highlands Ranch by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 7°C | -6°C | -23°C / 20°C | 8 mm | 56% | 12 km/h |
| February | 8°C | -5°C | -22°C / 24°C | 9 mm | 55% | 13 km/h |
| March | 14°C | -1°C | -22°C / 31°C | 19 mm | 50% | 14 km/h |
| April | 17°C | 2°C | -14°C / 28°C | 34 mm | 49% | 15 km/h |
| May | 21°C | 7°C | -7°C / 32°C | 99 mm | 57% | 13 km/h |
| June | 28°C | 13°C | 3°C / 37°C | 50 mm | 47% | 12 km/h |
| July | 31°C | 16°C | 8°C / 37°C | 41 mm | 47% | 13 km/h |
| August | 30°C | 15°C | 6°C / 38°C | 40 mm | 48% | 12 km/h |
| September | 27°C | 11°C | -2°C / 36°C | 38 mm | 46% | 12 km/h |
| October | 19°C | 4°C | -15°C / 30°C | 21 mm | 51% | 11 km/h |
| November | 13°C | -1°C | -25°C / 26°C | 7 mm | 52% | 12 km/h |
| December | 8°C | -4°C | -25°C / 23°C | 5 mm | 52% | 13 km/h |
Best time to visit Highlands Ranch
The most comfortable time to visit Highlands Ranch is generally June and September to October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around May, totalling about 371 mm a year.
Travellers who prefer heat should aim for July, when highs average 31°C. May is the month to avoid if rain would spoil your plans — it averages 99 mm, roughly 20× the rainfall of December.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Highlands Ranch forecast for what is happening now.