Union, NE Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Union, a village in Cass County, Nebraska.

Tonight

43°F

Chance Rain Showers then Cloudy

A chance of rain showers before 9pm. Cloudy. Low around 43, with temperatures rising to around 45 overnight. Northwest wind 12 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Union

When	Temp	Forecast	Wind	Precip
Tonight	43°F	Chance Rain Showers then Cloudy	12 to 20 mph NW	51%
Wednesday	54°F	Mostly Cloudy	9 to 14 mph WNW	7%
Wednesday Night	41°F	Partly Cloudy then Slight Chance Rain Showers	7 mph WNW	17%
Thursday	53°F	Chance Rain Showers	10 mph NW	31%
Thursday Night	38°F	Mostly Cloudy	7 mph NNW	4%
Friday	54°F	Partly Sunny	1 to 5 mph N	4%
Friday Night	36°F	Mostly Cloudy	1 mph SSW	0%
Saturday	60°F	Mostly Sunny	3 mph SW	4%
Saturday Night	39°F	Mostly Clear	3 mph W	6%
Sunday	65°F	Sunny	5 mph WSW	2%
Sunday Night	41°F	Mostly Clear	5 mph SSW	0%
Monday	68°F	Sunny	5 to 9 mph WSW	0%
Monday Night	43°F	Mostly Clear	5 mph NW	0%
Tuesday	66°F	Mostly Sunny	2 to 6 mph NE	1%

Forecast source: National Weather Service (api.weather.gov) for Union (40.814, -95.922). Updated through the day.

Growing snapshot for Union

Last spring frost

Apr 18

First fall frost

Oct 19

Growing season

182 days

Hardiness zone

More local growing data for Union: nearby ZIP 68455 weather · frost dates · planting calendar · Nebraska frost dates

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Climate data from the nearest NOAA station, Nebraska City 2Nw, Ne (8.4 mi from Union). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.