Olney Weather Forecast
- 62
- 83
Becoming Sunny
- 65
- 82
Mostly Sunny
- 67
- 85
Partly Sunny
- 72
- 90
Mostly Sunny
- 74
- 95
Slight Chance Thunderstorms
- 72
- 93
Chance Thunderstorms
Today 21 Jul Central and Southeast Montgomery
Mostly sunny. Highs in the mid 80s. North Winds around 5 Mph.
Tonight 21 Jul Central and Southeast Montgomery
Mostly clear. Lows in the lower 60s. Northeast Winds around 5 Mph.
Olney Temperature Statistics
July Temperature
Gaithersburg - Montgomery County Airport (5 miles)
Lowest 4 July, 2025
60.1 °FAverage July
78.4 °FHighest 8 July, 2025
95 °F
Climate (2020–Present)
Gaithersburg - Montgomery County Airport (5 miles)
Average Low 2020–2025
46.5 °FAverage 2020–2025
56.1 °FAverage High 2020–2025
65.9 °F