30-year climate normals

Broomfield County Climate and Weather Averages

Hottest month — July

91.1°

average daily high. The coldest month is January, averaging a low of 19.0°F.

Broomfield County gets 14.51" of precipitation a year and 44.8" of snow, and 40% of it falls in Apr, May, Jun.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

Month	Avg high	Avg low	Precip	Snow
January	48.0°	19.0°	0.45"	6.0"
February	49.6°	20.3°	0.54"	7.6"
March	57.7°	28.4°	1.21"	8.2"
April	63.9°	35.1°	1.94"	6.5"
May	72.3°	44.4°	2.35"	1.2"
June	85.3°	53.4°	1.50"	0.0"
July	91.1°	58.9°	1.73"	0.0"
August	88.9°	57.2°	1.32"	0.0"
September	81.5°	48.9°	1.19"	0.1"
October	67.2°	36.8°	1.07"	2.4"
November	55.8°	26.8°	0.73"	6.9"
December	47.5°	19.1°	0.48"	5.9"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 40% falling in the wettest three months (Apr, May, Jun).

January 0.45"

February 0.54"

March 1.21"

April 1.94"

May 2.35"

June 1.50"

July 1.73"

August 1.32"

September 1.19"

October 1.07"

November 0.73"

December 0.48"

Annual total 14.51"

What this climate costs you

Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.

Cooling degree days How much air conditioning the climate demands 879

Heating degree days How much heating the climate demands 5,449

Approximate annual cooling cost At 16.16¢/kWh, Colorado average $142

Approximate annual electric heating cost Lower where heating is gas rather than electric $308

These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Broomfield County, where electricity is one line of eight.

Common questions

What is the weather like in Broomfield County?

Broomfield County averages a high of 91.1°F in July and a low of 19.0°F in January. Annual precipitation is 14.51 inches, including 44.8 inches of snow.

When is the rainy season in Broomfield County?

The wettest stretch is Apr, May, Jun, which accounts for 40% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Broomfield County?

The average daily high in July, the hottest month, is 91.1°F. That drives 879 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Broomfield County?

Yes. Broomfield County averages 44.8 inches of snow a year.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station NORTHGLENN, CO US (USC00055984), 4.3 miles from the county centroid.
Heating and cooling degree days — NOAA, same station and period.
Electricity price — US Energy Information Administration, Electric Power Monthly Table 5.6.A, Colorado residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.