Flagstaff, AZ Weather & Growing Conditions
Tonight
43°F
Mostly Clear
Mostly clear, with a low around 43. West wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 43°F | Mostly Clear | 6 mph W | 2% |
| Saturday | 77°F | Sunny | 3 to 15 mph W | 0% |
| Saturday Night | 40°F | Mostly Clear | 3 to 8 mph W | 0% |
| Sunday | 77°F | Mostly Sunny | 3 to 14 mph SW | 0% |
| Sunday Night | 39°F | Mostly Cloudy | 2 to 8 mph W | 1% |
| Monday | 75°F | Mostly Sunny | 2 to 15 mph SW | 4% |
| Monday Night | 49°F | Slight Chance Showers And Thunderstorms | 0 to 6 mph S | 33% |
| Tuesday | 74°F | Chance Showers And Thunderstorms | 1 to 12 mph S | 40% |
| Tuesday Night | 48°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 6 mph E | 14% |
| Wednesday | 74°F | Chance Showers And Thunderstorms | 0 to 7 mph E | 34% |
| Wednesday Night | 49°F | Slight Chance Showers And Thunderstorms | 0 to 3 mph NE | 18% |
| Thursday | 73°F | Chance Showers And Thunderstorms | 2 to 8 mph E | 42% |
| Thursday Night | 50°F | Chance Showers And Thunderstorms | 0 to 3 mph NE | 37% |
| Friday | 72°F | Chance Showers And Thunderstorms | 2 to 7 mph SE | 53% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Flagstaff, AZ
Last spring frost
Jun 4
First fall frost
Sep 28
Growing season
115 days
Explore more for Flagstaff, AZ: full frost dates · planting calendar · Arizona frost dates
Climate data from the nearest NOAA station, Flagstaff Pulliam Ap, Az (3.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.