McKinnon, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for McKinnon, a community in Sweetwater County, Wyoming.
Today
85°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 85. North wind 3 to 16 mph, with gusts as high as 23 mph.
7-day forecast for McKinnon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Areas Of Smoke | 3 to 16 mph N | 0% |
| Tonight | 50°F | Areas Of Smoke | 6 to 20 mph W | 0% |
| Wednesday | 83°F | Sunny | 3 to 21 mph WNW | 0% |
| Wednesday Night | 53°F | Mostly Clear | 7 to 20 mph W | 0% |
| Thursday | 88°F | Sunny | 5 to 17 mph W | 0% |
| Thursday Night | 56°F | Mostly Clear | 5 to 17 mph W | 0% |
| Friday | 91°F | Sunny | 3 to 9 mph WNW | 0% |
| Friday Night | 58°F | Partly Cloudy | 10 mph W | 0% |
| Saturday | 91°F | Sunny | 7 mph W | 3% |
| Saturday Night | 60°F | Partly Cloudy | 10 mph WSW | 0% |
| Sunday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 8 mph WSW | 28% |
| Sunday Night | 58°F | Partly Cloudy | 12 mph SW | 6% |
| Monday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 7 mph W | 38% |
| Monday Night | 57°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 9 mph WSW | 16% |
Forecast source: National Weather Service (api.weather.gov) for McKinnon (41.031, -109.938). Updated through the day.
Growing snapshot for McKinnon
Last spring frost
May 22
First fall frost
Sep 29
Growing season
128 days
Hardiness zone
5b
More local growing data for McKinnon: nearby ZIP 82938 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
North Rock Springs
Point of Rocks
Purple Sage
Reliance
Rock Springs
Superior
Table Rock
Wamsutter
Climate data from the nearest NOAA station, Manila, Ut (11.5 mi from McKinnon). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.