Niwot Weather Forecast
- 60
- 94
Becoming Sunny
- 61
- 97
Hot
- 58
- 84
Rain Showers Likely
- 55
- 75
Thunderstorms Likely
- 56
- 79
Chance Thunderstorms
- 53
- 72
Rain Showers
- 52
- 72
Rain Showers Likely
Today 20 Aug Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County
Mostly sunny. Highs in the lower to mid 90s.
Tonight 20 Aug Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County
Mostly clear. Lows in the lower to mid 60s.
Niwot Temperature Statistics
August Temperature
Vance Brand Airport (3.7 miles)
Lowest 3 August, 2025
51.4 °FAverage August
75.2 °FHighest 5 August, 2025
101.5 °F
Climate (2020–Present)
Vance Brand Airport (3.7 miles)
Average Low 2020–2025
37.7 °FAverage 2020–2025
52.5 °FAverage High 2020–2025
67.8 °F