Theodore Roosevelt National Park Weather Page

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Theodore Roosevelt National Park Weather Information

Summers are warm with temperatures in the 80's and 90's with a few days into the 100's. Evenings can be cool.

Average Maximum:
Jul: 87.1° F
Aug: 86.7° F
Average Minimum:
Jul: 54.5° F
Aug: 52.4° F
Annual Precipitation: 15 inches.

Winters are generally cold. Recommend layers of clothing, especially in spring and fall. Rain gear is needed in spring. A hat is needed for sun protection in summer.

Theodore Roosevelt National Park Average Temperatures

Month	Max Temp	Min Temp
Jan	26.9	1.2
Feb	34.0	8.0
Mar	43.5	17.6
Apr	58.3	29.1
May	70.8	40.5
Jun	79.5	49.8
Jul	87.1	54.5
Aug	86.7	52.4
Sep	74.6	41.1
Oct	62.4	30.3
Nov	42.9	17.5
Dec	31.5	6.6

All temperatures in Fahrenheit
Theodore Roosevelt National Park Record Temperatures

Month	Max Temp	Year	Min Temp	Year
Jan	66	1981	-49	1950
Feb	70	1992	-47	1962
Mar	80	1993	-33	1960
Apr	95	1980	-13	1975
May	101	1980	08	1967
Jun	107	1988	28	1964
Jul	110	1981	34	1968
Aug	105	1988	28	1964
Sep	106	1978	13	1961
Oct	95	1953	-13	1991
Nov	79	1975	-31	1985
Dec	66	1979	-44	1983

All temperatures are in Fahrenheit and are the extremes for the 45-year period between 1950-1994
Theodore Roosevelt National Park Average Precipitation

Month	Avg Precip	Avg Snowfall	To Date
Jan	0.39"	6.41"	0.39"
Feb	0.36"	5.13"	0.75"
Mar	0.62"	5.48"	1.37"
Apr	1.43"	3.26"	2.80"
May	2.27"	0.71"	5.07"
Jun	3.36"	Trace	8.43"
Jul	2.05"	Trace	10.48"
Aug	1.42"	Trace	11.90"
Sep	1.40"	0.17"	13.30"
Oct	0.86"	0.76"	14.16"
Nov	0.48"	4.28"	14.64"
Dec	0.45"	5.44"	15.09"

Avg Annual Snowfall 31.64 inches ~ Avg Annual Precip 15.09 inches
Williston, North Dakota Weather Stats

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Avg High - °F	19.6	26.8	39.4	55.8	68.3	78.0	84.8	83.3	70.1	58.1	38.0	23.6	53.8
Avg Low - °F	-1.8	5.3	17.4	30.5	42.2	51.4	56.5	54.1	42.4	31.4	16.3	2.8	29.0
Avg Precip (in)	0.53	0.42	0.69	1.28	1.99	2.28	2.10	1.25	1.33	0.77	0.45	0.58	13.67
Avg Snowfall (in)	7.2	4.8	6.5	4.7	0.8	0.0	0.0	0.0	0.3	1.7	5.0	7.3	38.3

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by John William Uhler

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