30-year climate normals

Del Norte County Climate and Weather Averages

Hottest month — September

64.5°

average daily high. The coldest month is December, averaging a low of 41.4°F.

Del Norte County gets 57.98" of precipitation a year, and 49% of it falls in Nov, Dec, Jan.

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
January	56.2°	41.9°	9.40"
February	56.2°	42.4°	6.94"
March	55.8°	42.8°	7.81"
April	57.2°	44.4°	5.12"
May	59.3°	47.2°	2.48"
June	61.6°	49.3°	1.40"
July	63.0°	51.6°	0.33"
August	64.2°	52.8°	0.37"
September	64.5°	50.2°	1.10"
October	62.3°	47.2°	4.07"
November	58.2°	44.0°	7.82"
December	55.2°	41.4°	11.14"

Rainfall by month

Del Norte County has a distinct wet season. 49% of the year's precipitation arrives in Nov, Dec, Jan.

January 9.40"

February 6.94"

March 7.81"

April 5.12"

May 2.48"

June 1.40"

July 0.33"

August 0.37"

September 1.10"

October 4.07"

November 7.82"

December 11.14"

Annual total 57.98"

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 4

Heating degree days How much heating the climate demands 4,423

Approximate annual cooling cost At 33.25¢/kWh, California average $1

Approximate annual electric heating cost Lower where heating is gas rather than electric $515

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 Del Norte County, where electricity is one line of eight.

Common questions

What is the weather like in Del Norte County?

Del Norte County averages a high of 64.5°F in September and a low of 41.4°F in December. Annual precipitation is 57.98 inches, with essentially no snow.

When is the rainy season in Del Norte County?

The wettest stretch is Nov, Dec, Jan, which accounts for 49% of the year's precipitation. That is a pronounced wet season rather than rain spread evenly through the year.

How hot does it get in Del Norte County?

The average daily high in September, the hottest month, is 64.5°F. That drives 4 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Del Norte County?

Effectively no. Measurable snowfall is rare in Del Norte County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station CRESCENT CITY MCNAMARA AP, CA US (USW00024286), 13.3 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, California residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.