What is the hottest month in Fullerton?

July is the warmest month in Fullerton, with an average high of 82.0°F.

What is the coldest month in Fullerton?

January is the coldest month in Fullerton, with an average low of 2.2°F.

What month does Fullerton get the most rain?

June is typically the wettest month in Fullerton, with about 4.07 inches of precipitation.

What plant hardiness zone is Fullerton in?

Fullerton is approximately in USDA plant hardiness Zone 5b, based on the average annual extreme minimum temperature.

Fullerton, ND

Climate overview — based on NOAA 1991-2020 normals from FULLERTON 1 ESE, ND US.

Dfb Warm-summer humid continental climate 5b USDA hardiness Zone 5b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Fullerton has an annual average temperature of 42.9°F with about 24.3 inches of precipitation per year and 36.9 inches of snow. The warmest month is July (average high 82.0°F), and the coldest is January (average low 2.2°F). June is typically the wettest month (4.07 in) and January the driest (0.62 in). Snow typically falls from October through April.

Pleasant months

1 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

58.3°F

warmest to coldest month

Heating need

8,271

HDD/yr

Cooling need

303

CDD/yr

Best time to visit Fullerton

Full guide →

Climate change signal

All-time records →

17 of 366 (4.6%) of Fullerton'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.

1890s		3
1900s		25
1910s		18
1920s		26
1930s		75
1940s		22
1950s		47
1960s		22
1970s		36
1980s		34
1990s		18
2000s		14
2010s		15
2020s		11

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	22.2°F	2.2°F	12.2°F	0.62 in	7.2 in	4
February	27.6°F	6.1°F	16.8°F	0.66 in	6.0 in	5
March	40.2°F	18.6°F	29.4°F	1.17 in	6.9 in	4
April	55.2°F	31.2°F	43.2°F	1.78 in	3.7 in	7
May	68.2°F	44.0°F	56.1°F	3.54 in	—	9
June	77.4°F	55.0°F	66.2°F	4.07 in	—	11
July	82.0°F	59.0°F	70.5°F	3.62 in	—	9
August	80.5°F	56.4°F	68.4°F	2.62 in	—	7
September	71.5°F	47.5°F	59.5°F	2.49 in	—	7
October	56.2°F	34.3°F	45.3°F	2.05 in	1.6 in	6
November	38.7°F	20.5°F	29.6°F	0.77 in	4.2 in	4
December	26.0°F	8.4°F	17.2°F	0.86 in	7.3 in	4