Timonium, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Timonium, a community in Baltimore County, Maryland.
This Afternoon
69°F
Mostly Sunny
Mostly sunny, with a high near 69. South wind around 7 mph.
7-day forecast for Timonium
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Mostly Sunny | 7 mph S | 2% |
| Tonight | 52°F | Mostly Clear then Patchy Fog | 1 to 5 mph SE | 2% |
| Wednesday | 73°F | Patchy Fog then Mostly Sunny | 1 to 9 mph S | 2% |
| Wednesday Night | 61°F | Mostly Cloudy then Chance Light Rain | 5 to 8 mph S | 31% |
| Thursday | 74°F | Light Rain Likely | 6 to 9 mph S | 61% |
| Thursday Night | 61°F | Light Rain Likely | 1 to 6 mph SW | 62% |
| Friday | 70°F | Rain Likely | 5 mph NW | 66% |
| Friday Night | 51°F | Light Rain Likely | 2 to 6 mph NW | 66% |
| Saturday | 65°F | Mostly Sunny | 6 to 10 mph NW | 11% |
| Saturday Night | 42°F | Partly Cloudy | 8 mph NW | 11% |
| Sunday | 61°F | Mostly Sunny | 8 mph NW | 6% |
| Sunday Night | 41°F | Partly Cloudy then Slight Chance Light Rain | 3 to 7 mph W | 16% |
| Monday | 61°F | Slight Chance Light Rain | 8 to 13 mph NW | 16% |
| Monday Night | 41°F | Mostly Clear | 3 to 8 mph W | 10% |
Forecast source: National Weather Service (api.weather.gov) for Timonium (39.446, -76.601). Updated through the day.
Growing snapshot for Timonium
Last spring frost
Apr 2
First fall frost
Nov 7
Growing season
220 days
Hardiness zone
7b
More local growing data for Timonium: nearby ZIP 21093 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Cylburn, Md (5.9 mi from Timonium). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.