Mackay, ID Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mackay, a city in Butte County, Idaho.
Today
81°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 81. West wind 3 to 10 mph.
7-day forecast for Mackay
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Areas Of Smoke | 3 to 10 mph W | 0% |
| Tonight | 51°F | Areas Of Smoke | 12 mph NW | 0% |
| Wednesday | 85°F | Areas Of Smoke | 5 to 10 mph W | 0% |
| Wednesday Night | 56°F | Mostly Clear | 7 to 12 mph WNW | 0% |
| Thursday | 90°F | Sunny | 7 to 10 mph WNW | 0% |
| Thursday Night | 60°F | Mostly Clear | 8 to 15 mph WNW | 0% |
| Friday | 92°F | Sunny | 7 to 14 mph W | 0% |
| Friday Night | 60°F | Mostly Clear | 10 to 18 mph WNW | 0% |
| Saturday | 91°F | Sunny | 6 to 17 mph W | 3% |
| Saturday Night | 60°F | Partly Cloudy | 8 to 21 mph WNW | 0% |
| Sunday | 90°F | Sunny | 6 to 21 mph W | 3% |
| Sunday Night | 58°F | Mostly Clear | 7 to 22 mph WNW | 2% |
| Monday | 89°F | Sunny | 6 to 20 mph W | 1% |
| Monday Night | 57°F | Mostly Clear | 7 to 21 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Mackay (43.912, -113.613). Updated through the day.
Growing snapshot for Mackay
Last spring frost
May 22
First fall frost
Sep 22
Growing season
119 days
Hardiness zone
5a
More local growing data for Mackay: nearby ZIP 83255 weather · frost dates · planting calendar · Idaho frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Arco, Id (9.6 mi from Mackay). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.