What is the hottest month in Union Grove?

July is the warmest month in Union Grove, with an average high of 88.9°F.

What is the coldest month in Union Grove?

January is the coldest month in Union Grove, with an average low of 33.1°F.

What month does Union Grove get the most rain?

December is typically the wettest month in Union Grove, with about 5.97 inches of precipitation.

What plant hardiness zone is Union Grove in?

Union Grove is approximately in USDA plant hardiness Zone 8b, based on the average annual extreme minimum temperature.

Has the climate in Union Grove changed recently?

13.7% of Union Grove'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.

Union Grove, AL

Climate overview — based on NOAA 1991-2020 normals from GUNTERSVILLE, AL US.

Cfa Humid subtropical climate 8b USDA hardiness Zone 8b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Union Grove has an annual average temperature of 61.9°F with about 56.8 inches of precipitation per year and 0.7 inches of snow. The warmest month is July (average high 88.9°F), and the coldest is January (average low 33.1°F). December is typically the wettest month (5.97 in) and October the driest (3.48 in). Snow typically falls from February through February.

Pleasant months

3 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

38.5°F

warmest to coldest month

Heating need

2,799

HDD/yr

Cooling need

1,698

CDD/yr

Best time to visit Union Grove

Full guide →

Climate change signal

All-time records →

50 of 366 (13.7%) of Union Grove'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.

1900s		0
1910s		27
1920s		0
1930s		0
1940s		0
1950s		56
1960s		56
1970s		26
1980s		68
1990s		62
2000s		15
2010s		39
2020s		17

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	50.4°F	33.1°F	41.8°F	5.31 in	0.1 in	12
February	54.8°F	35.8°F	45.3°F	5.40 in	0.5 in	12
March	63.3°F	42.8°F	53.0°F	5.65 in	0.1 in	13
April	71.9°F	50.4°F	61.2°F	4.99 in	—	11
May	79.5°F	59.7°F	69.6°F	4.56 in	—	10
June	86.1°F	68.1°F	77.1°F	4.73 in	—	11
July	88.9°F	71.6°F	80.3°F	4.31 in	—	11
August	88.7°F	71.1°F	79.9°F	4.02 in	—	10
September	83.9°F	65.4°F	74.7°F	4.16 in	—	8
October	73.6°F	53.5°F	63.5°F	3.48 in	—	8
November	62.0°F	42.3°F	52.1°F	4.19 in	—	10
December	53.3°F	36.3°F	44.8°F	5.97 in	—	13