Best year time to visit Sullivan County

General weather information about Sullivan County

Average annual temperature is 14.1 °C

Absolute maximum temperature: 34.0 °C

Absolute minimum temperature: -7.1 °C

Number of sunny days: 187 days

Number of rainy days: 176 days

Number of snow days: 2 days

Look at detailed online map of Sullivan County

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

Sullivan County air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	20.2	24.9	25.6	28.7	28.8	31.7	34.0	33.8	32.3	28.1	24.7	18.6
Average daytime temperature (°C)	11.3	14.4	15.1	20.8	23.5	26.6	30.8	28.7	27.0	21.0	15.6	11.4
Average temperature (°C)	5.6	8.2	8.7	13.5	17.0	20.2	24.2	22.8	20.2	14.5	8.2	5.4
Average night temperature (°C)	1.9	3.5	3.5	7.3	11.3	14.7	18.8	18.1	14.7	9.0	2.8	1.0
Absolute minimum temperature (°C)	-6.6	-7.1	-6.5	0.8	2.9	7.9	14.3	13.6	10.5	3.2	-5.2	-5.4

Sullivan County monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	10.0	11.0	12.0	13.0	14.0	14.0	14.0	14.0	12.0	11.0	10.0	9.0
Daylight mean duration (h)	10.0	10.9	12.0	13.1	14.1	14.6	14.4	13.5	12.4	11.3	10.2	9.7
Daylight minimum duration (h)	9.0	10.0	11.0	12.0	13.0	14.0	14.0	13.0	11.0	10.0	9.0	9.0
Sunshine mean duration (h)	4.7	5.9	8.2	9.3	10.2	11.3	11.7	10.3	10.7	8.6	7.9	5.9
Precipitation (mm)	113	124	104	92	101	76	57	160	59	30	51	85
Sunny days	14	10	17	17	13	15	14	11	19	19	22	16
Rainy days	16	18	13	13	18	15	17	20	11	12	8	15
Snow days	1	0	1	0	0	0	0	0	0	0	0	0

Sullivan County - weather forecast by months

Sullivan County weather in january Sullivan County weather in february Sullivan County weather in march Sullivan County weather in april Sullivan County weather in may Sullivan County weather in june Sullivan County weather in july Sullivan County weather in august Sullivan County weather in september Sullivan County weather in october Sullivan County weather in november Sullivan County weather in december

Best time to visit Sullivan County:

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

June — 11.3(h)
July — 11.7(h)

The largest precipitation sum in Sullivan County is at

January — 113(mm)

February — 124(mm)

August — 160(mm)

Weather forecast in the closest to Sullivan County admin centers