Best year time to visit Grainger County

General weather information about Grainger County

Average annual temperature is 15.1 °C

Absolute maximum temperature: 35.8 °C

Absolute minimum temperature: -6.1 °C

Number of sunny days: 177 days

Number of rainy days: 186 days

Number of snow days: 2 days

* Weather data for Grainger 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)	19.2	23.7	24.1	28.3	28.8	31.9	35.2	35.8	32.0	28.8	25.5	18.4
Average daytime temperature (°C)	11.3	14.7	15.7	20.6	24.7	27.9	31.2	29.2	27.5	21.8	16.1	11.8
Average temperature (°C)	6.3	8.8	9.4	14.0	18.3	21.6	25.3	23.9	21.3	15.8	9.8	6.5
Average night temperature (°C)	2.9	4.6	4.5	8.7	13.0	16.3	20.5	19.7	16.4	10.9	5.3	2.8
Absolute minimum temperature (°C)	-5.3	-5.7	-6.1	2.6	4.7	10.8	16.7	13.8	12.1	5.4	-3.5	-5.2

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

The largest precipitation sum in Grainger County is at

January — 136(mm)

February — 135(mm)

March — 109(mm)

August — 106(mm)

When is the best time to visit Grainger County?

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

What is the weather like in Grainger County?

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

How many sunny days does Grainger County have?

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