Fontenelle, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fontenelle, a community in Lincoln County, Wyoming.
This Afternoon
66°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 5pm, then showers and thunderstorms likely. Some of the storms could be severe. Mostly cloudy, with a high near 66. East wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Fontenelle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Chance Showers And Thunderstorms | 9 mph E | 64% |
| Tonight | 38°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 to 9 mph NNW | 70% |
| Saturday | 63°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 14 mph W | 21% |
| Saturday Night | 33°F | Partly Cloudy then Patchy Fog | 3 to 14 mph WNW | 7% |
| Sunday | 64°F | Mostly Sunny | 2 to 7 mph W | 0% |
| Sunday Night | 35°F | Mostly Clear | 5 to 8 mph NNW | 0% |
| Monday | 69°F | Sunny | 5 mph S | 0% |
| Monday Night | 39°F | Partly Cloudy | 5 mph WNW | 2% |
| Tuesday | 70°F | Mostly Sunny | 5 mph ENE | 5% |
| Tuesday Night | 39°F | Chance Showers And Thunderstorms | 5 mph W | 28% |
| Wednesday | 71°F | Sunny | 5 mph W | 5% |
| Wednesday Night | 38°F | Mostly Clear | 5 mph WNW | 4% |
| Thursday | 73°F | Mostly Sunny | 5 mph ENE | 2% |
| Thursday Night | 40°F | Partly Cloudy | 5 mph E | 6% |
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
4a
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.