Olney, MD Weather & Growing Conditions
Today
84°F
Partly Sunny
Partly sunny, with a high near 84. East wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Partly Sunny | 7 mph E | 1% |
| Tonight | 69°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 2 to 7 mph E | 51% |
| Wednesday | 84°F | Rain Showers Likely then Chance Showers And Thunderstorms | 2 to 6 mph SE | 71% |
| Wednesday Night | 71°F | Chance Showers And Thunderstorms | 6 mph S | 49% |
| Thursday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 9 mph S | 22% |
| Thursday Night | 72°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 29% |
| Friday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 6 mph SW | 40% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 5 mph SW | 51% |
| Saturday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 6 mph SW | 53% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 53% |
| Sunday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 5 mph W | 20% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SW | 20% |
| Monday | 90°F | Mostly Sunny | 2 to 7 mph W | 13% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms | 2 to 6 mph W | 17% |
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 Aug 4, 2026.