Purple Sage, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Purple Sage, a community in Sweetwater County, Wyoming.
This Afternoon
65°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 2pm, then showers and thunderstorms likely between 2pm and 4pm, then a chance of showers and thunderstorms. Partly sunny. High near 65, with temperatures falling to around 61 in the afternoon. West southwest wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Purple Sage
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Slight Chance Showers And Thunderstorms | 10 mph WSW | 74% |
| Tonight | 40°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 to 9 mph W | 25% |
| Sunday | 65°F | Sunny | 5 to 9 mph WSW | 1% |
| Sunday Night | 39°F | Mostly Clear | 2 to 6 mph S | 0% |
| Monday | 70°F | Mostly Sunny | 3 mph SW | 0% |
| Monday Night | 43°F | Partly Cloudy | 3 mph NNE | 1% |
| Tuesday | 74°F | Mostly Sunny | 3 to 7 mph S | 8% |
| Tuesday Night | 45°F | Chance Showers And Thunderstorms | 6 mph SW | 32% |
| Wednesday | 73°F | Mostly Sunny | 6 to 10 mph WSW | 8% |
| Wednesday Night | 44°F | Mostly Clear | 6 mph SW | 2% |
| Thursday | 76°F | Sunny | 3 mph WSW | 2% |
| Thursday Night | 47°F | Partly Cloudy | 5 mph ESE | 4% |
| Friday | 76°F | Mostly Sunny | 6 mph S | 6% |
| Friday Night | 47°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 mph S | 10% |
Forecast source: National Weather Service (api.weather.gov) for Purple Sage (41.551, -109.320). Updated through the day.
Growing snapshot for Purple Sage
Last spring frost
May 24
First fall frost
Sep 24
Growing season
121 days
Hardiness zone
5a
More local growing data for Purple Sage: nearby ZIP 82943 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Arrowhead Springs
Bairoil
Clearview Acres
Eden
Farson
Granger
Green River
James Town
Little America
McKinnon
North Rock Springs
Point of Rocks
Reliance
Rock Springs
Superior
Table Rock
Wamsutter
Climate data from the nearest NOAA station, Rock Springs Fire Dept, Wy (9 mi from Purple Sage). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.