Fontenelle, WY Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Fontenelle, a community in Lincoln County, Wyoming.

Today

64°F

Mostly Sunny then Slight Chance Showers And Thunderstorms

A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 64. West wind 3 to 12 mph. Chance of precipitation is 20%.

7-day forecast for Fontenelle

When	Temp	Forecast	Wind	Precip
Today	64°F	Mostly Sunny then Slight Chance Showers And Thunderstorms	3 to 12 mph W	22%
Tonight	32°F	Slight Chance Showers And Thunderstorms then Patchy Fog	3 to 12 mph WNW	14%
Sunday	64°F	Mostly Sunny	2 to 7 mph W	1%
Sunday Night	34°F	Mostly Clear	5 to 8 mph NNW	0%
Monday	66°F	Mostly Sunny	5 mph ESE	0%
Monday Night	36°F	Partly Cloudy	1 to 5 mph ESE	0%
Tuesday	69°F	Mostly Sunny	5 mph SSE	5%
Tuesday Night	38°F	Chance Showers And Thunderstorms	3 to 7 mph WSW	31%
Wednesday	70°F	Mostly Sunny	3 to 7 mph W	12%
Wednesday Night	36°F	Mostly Clear	7 mph WNW	2%
Thursday	72°F	Sunny	3 mph E	3%
Thursday Night	39°F	Partly Cloudy	5 mph E	2%
Friday	73°F	Mostly Sunny	5 mph E	5%
Friday Night	39°F	Partly Cloudy	7 mph SW	9%

Forecast source: National Weather Service (api.weather.gov) for Fontenelle (42.003, -110.062). Updated through the day.

Growing snapshot for Fontenelle

Last spring frost

Jun 9

First fall frost

Sep 4

Growing season

84 days

Hardiness zone

More local growing data for Fontenelle: nearby ZIP 83123 weather · frost dates · planting calendar · Wyoming frost dates

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Climate data from the nearest NOAA station, La Barge, Wy (4.2 mi from Fontenelle). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.