Broomfield, CO

Climate overview — based on NOAA 1991-2020 normals from NORTHGLENN, CO US.

BSk Semi-arid (cold) climate 7a USDA hardiness Zone 7a

Year-round temperatures (°F)

10° 30° 50° 70° 90° J F M A M J J A S O N D
Avg high Avg low

Climate summary

Broomfield has an annual average temperature of 52.4°F with about 14.5 inches of precipitation per year and 44.8 inches of snow. The warmest month is July (average high 91.1°F), and the coldest is January (average low 19.0°F). May is typically the wettest month (2.35 in) and January the driest (0.45 in). Snow typically falls from October through May.

Annual swing
41.7°F
warmest to coldest month
Heating need
5,223
Cooling need
681

Best time to visit Broomfield

Full guide →

Climate change signal

All-time records →

150 of 366 (41%) of Broomfield's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1980s
9
1990s
44
2000s
137
2010s
79
2020s
97

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month Avg High Avg Low Avg Temp Precipitation Snow Rainy days
January 48.0°F 19.0°F 33.5°F 0.45 in 6.0 in 4
February 49.6°F 20.3°F 34.9°F 0.54 in 7.6 in 5
March 57.7°F 28.4°F 43.0°F 1.21 in 8.2 in 6
April 63.9°F 35.1°F 49.5°F 1.94 in 6.5 in 8
May 72.3°F 44.4°F 58.4°F 2.35 in 1.2 in 10
June 85.3°F 53.4°F 69.4°F 1.50 in 7
July 91.1°F 58.9°F 75.0°F 1.73 in 7
August 88.9°F 57.2°F 73.1°F 1.32 in 8
September 81.5°F 48.9°F 65.2°F 1.19 in 0.1 in 6
October 67.2°F 36.8°F 52.0°F 1.07 in 2.4 in 5
November 55.8°F 26.8°F 41.3°F 0.73 in 6.9 in 5
December 47.5°F 19.1°F 33.3°F 0.48 in 5.9 in 4

Climate twins of Broomfield

Why these? →

The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).

Frost dates
Last spring / first fall frost
All-time records
Hottest, coldest, wettest
Planting calendar
What to plant, and when

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