Best year time to visit Frederick County

General weather information about Frederick County

Average annual temperature is 13.5 °C

Absolute maximum temperature: 37.2 °C

Absolute minimum temperature: -10.9 °C

Number of sunny days: 199 days

Number of rainy days: 162 days

Number of snow days: 4 days

* Weather data for Frederick County United States is based on climate observations for 2026 year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	17.8	22.2	24.6	31.3	29.4	32.3	37.2	35.0	36.4	27.0	23.6	18.4
Average daytime temperature (°C)	8.7	11.8	12.7	21.7	22.6	27.0	32.4	30.7	26.0	20.4	12.6	9.7
Average temperature (°C)	4.4	5.7	6.1	14.1	15.9	20.4	25.5	24.0	19.9	14.3	6.7	4.8
Average night temperature (°C)	1.2	0.9	1.1	7.9	9.7	14.5	19.4	18.5	14.9	9.3	1.9	1.2
Absolute minimum temperature (°C)	-4.9	-10.9	-7.0	-0.4	4.4	10.4	15.6	14.0	9.7	2.9	-6.2	-5.0

The best time to visit Frederick County during the most sunny months:

The largest precipitation sum in Frederick County is at

June — 88(mm)

September — 124(mm)

December — 98(mm)

When is the best time to visit Frederick County?

The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Frederick County.

What is the weather like in Frederick County?

See average temperature, rainfall and daylight hours for Frederick County by month in the table above.

How many sunny days does Frederick County have?

The monthly weather statistics above show sunshine and rainfall patterns for Frederick County throughout the year.