Monrovia, CA Weather & Growing Conditions
Today
87°F
Sunny
Sunny, with a high near 87. South southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 5 mph SSW | 0% |
| Tonight | 64°F | Patchy Fog | 0 to 5 mph SE | 0% |
| Sunday | 85°F | Patchy Fog then Partly Sunny | 0 to 5 mph S | 0% |
| Sunday Night | 62°F | Patchy Fog | 0 to 5 mph S | 1% |
| Monday | 81°F | Mostly Sunny | 0 to 5 mph SSW | 1% |
| Monday Night | 60°F | Partly Cloudy | 0 to 5 mph SSW | 1% |
| Tuesday | 84°F | Sunny | 0 to 5 mph SSW | 0% |
| Tuesday Night | 64°F | Mostly Clear | 0 to 5 mph NNW | 0% |
| Wednesday | 91°F | Sunny | 0 to 5 mph WSW | 0% |
| Wednesday Night | 66°F | Mostly Clear | 0 to 5 mph WNW | 0% |
| Thursday | 92°F | Sunny | 0 to 5 mph SW | 3% |
| Thursday Night | 66°F | Mostly Clear | 0 to 5 mph NNE | 3% |
| Friday | 91°F | Sunny | 0 to 5 mph SSW | 3% |
| Friday Night | 67°F | Mostly Clear | 0 to 5 mph SSE | 2% |
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 Sep 19, 2026.