Olney, MD Weather & Growing Conditions
Today
74°F
Mostly Sunny
Mostly sunny, with a high near 74. South wind 6 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Mostly Sunny | 6 to 10 mph S | 1% |
| Tonight | 60°F | Mostly Cloudy then Chance Rain Showers | 8 mph S | 39% |
| Thursday | 73°F | Chance Rain Showers | 7 to 10 mph S | 49% |
| Thursday Night | 60°F | Chance Rain Showers | 2 to 6 mph SW | 54% |
| Friday | 69°F | Chance Light Rain | 5 mph N | 54% |
| Friday Night | 48°F | Chance Light Rain then Partly Cloudy | 1 to 7 mph NW | 33% |
| Saturday | 61°F | Mostly Sunny | 8 to 13 mph NW | 5% |
| Saturday Night | 40°F | Partly Cloudy | 7 to 10 mph NW | 5% |
| Sunday | 59°F | Mostly Sunny | 7 to 12 mph NW | 1% |
| Sunday Night | 39°F | Mostly Clear | 8 mph W | 5% |
| Monday | 59°F | Sunny | 8 to 15 mph W | 5% |
| Monday Night | 37°F | Mostly Clear | 3 to 8 mph W | 5% |
| Tuesday | 63°F | Sunny | 3 to 10 mph W | 3% |
| Tuesday Night | 39°F | Mostly Clear | 6 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Olney, MD
Last spring frost
Apr 1
First fall frost
Nov 6
Growing season
219 days
Hardiness zone
7b
Explore more for Olney, MD: full frost dates · planting calendar · Maryland frost dates
Climate data from the nearest NOAA station, Rockville 1 Ne, Md (5.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.