Monrovia, CA Weather & Growing Conditions
Today
75°F
Mostly Sunny
Mostly sunny, with a high near 75. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Mostly Sunny | 5 mph SW | 0% |
| Tonight | 54°F | Mostly Clear | 0 to 5 mph WNW | 0% |
| Wednesday | 75°F | Sunny | 0 to 5 mph NW | 0% |
| Wednesday Night | 57°F | Mostly Clear | 5 mph N | 0% |
| Thursday | 80°F | Sunny | 0 to 5 mph N | 0% |
| Thursday Night | 57°F | Mostly Clear | 0 to 10 mph NNW | 0% |
| Friday | 82°F | Sunny | 0 to 10 mph NE | 0% |
| Friday Night | 60°F | Clear | 0 to 15 mph N | 0% |
| Saturday | 85°F | Sunny | 0 to 10 mph NNE | 0% |
| Saturday Night | 62°F | Clear | 0 to 15 mph N | 0% |
| Sunday | 86°F | Sunny | 0 to 5 mph ENE | 0% |
| Sunday Night | 64°F | Partly Cloudy | 0 to 10 mph NNE | 0% |
| Monday | 83°F | Mostly Sunny | 0 to 5 mph S | 0% |
| Monday Night | 62°F | Partly Cloudy | 0 to 5 mph NNE | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Monrovia, CA
Last spring frost
Apr 28
First fall frost
Nov 15
Growing season
199 days
Hardiness zone
10a
Explore more for Monrovia, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Mt Wilson Cbs, Ca (6.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.