What is the hottest month in Castle Dale?

July is the warmest month in Castle Dale, with an average high of 91.4°F.

What is the coldest month in Castle Dale?

January is the coldest month in Castle Dale, with an average low of 9.7°F.

What month does Castle Dale get the most rain?

September is typically the wettest month in Castle Dale, with about 1.03 inches of precipitation.

What plant hardiness zone is Castle Dale in?

Castle Dale is approximately in USDA plant hardiness Zone 6a, based on the average annual extreme minimum temperature.

Has the climate in Castle Dale changed recently?

30.9% of Castle Dale's all-time daily heat records were set in the last decade (since 2015), compared to roughly 5% if records were evenly distributed over time.

Castle Dale, UT

Climate overview — based on NOAA 1991-2020 normals from CASTLE DALE, UT US.

BSk Semi-arid (cold) climate 6a USDA hardiness Zone 6a

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Castle Dale has an annual average temperature of 48.9°F with about 8 inches of precipitation per year and 16.6 inches of snow. The warmest month is July (average high 91.4°F), and the coldest is January (average low 9.7°F). September is typically the wettest month (1.03 in) and June the driest (0.45 in). Snow typically falls from November through April.

Annual swing

47.6°F

warmest to coldest month

Heating need

6,216

HDD/yr

Cooling need

426

CDD/yr

Best time to visit Castle Dale

Full guide →

Climate change signal

All-time records →

113 of 366 (30.9%) of Castle Dale'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		0
1900s		22
1910s		31
1920s		1
1930s		0
1940s		9
1950s		9
1960s		24
1970s		19
1980s		26
1990s		33
2000s		68
2010s		53
2020s		71

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	40.4°F	9.7°F	25.1°F	0.63 in	5.5 in	5
February	46.9°F	16.1°F	31.5°F	0.64 in	3.3 in	5
March	58.4°F	24.7°F	41.5°F	0.59 in	1.4 in	4
April	65.7°F	30.8°F	48.2°F	0.54 in	0.2 in	4
May	74.6°F	39.5°F	57.0°F	0.72 in	—	5
June	85.3°F	47.0°F	66.1°F	0.45 in	—	3
July	91.4°F	54.1°F	72.7°F	0.59 in	—	5
August	88.6°F	52.2°F	70.4°F	0.92 in	—	7
September	81.1°F	42.8°F	62.0°F	1.03 in	—	6
October	68.1°F	31.7°F	49.9°F	0.97 in	0.1 in	5
November	53.0°F	20.0°F	36.5°F	0.46 in	1.2 in	3
December	41.0°F	11.2°F	26.1°F	0.47 in	4.9 in	5