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Casselton May Weather

Averages and records for weather in Casselton, North Dakota in the month of May.

Typical Casselton May Weather 1991–2020
Average daily high	68.3 °F
Average daily low	43.3 °F
Average monthly precipitation	3.2 inches
Average monthly snow	0.0 inches
Daily chance of precipitation	34.6%
Daily chance of snow	0.14%

Casselton May Weather Records 1984–2024
Highest temperature	97 °F	May 10, 1987
Lowest temperature	19 °F	May 3, 2005
Highest daily low	65 °F	May 30, 2018
Lowest daily high	37 °F	May 2, 2011
Hottest average high temperature	78.1 °F	1988
Coldest average high temperature	61.9 °F	2019
Most daily precipitation	2.2 inches	May 18, 2015
Most monthly precipitation	8.4 inches	2015
Most daily snow	0.5 inches	May 12, 1997
Most monthly snow	0.5 inches	1997

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
May 1	61.4	36.9	95	25
May 2	62.0	37.3	86	22
May 3	62.5	37.7	86	19
May 4	63.0	38.1	85	26
May 5	63.6	38.6	92	26
May 6	64.1	39.0	95	23
May 7	64.6	39.5	89	25
May 8	65.1	39.9	92	28
May 9	65.4	40.4	91	28
May 10	65.7	40.8	97	23
May 11	66.0	41.2	85	25
May 12	66.5	41.6	85	25
May 13	66.9	41.9	91	25
May 14	67.3	42.4	93	25
May 15	67.8	42.8	93	29
May 16	68.3	43.3	94	31
May 17	68.8	43.8	92	28
May 18	69.2	44.3	94	27
May 19	69.5	44.7	94	31
May 20	69.9	45.1	94	30
May 21	70.2	45.5	89	32
May 22	70.6	45.9	90	35
May 23	71.0	46.2	88	24
May 24	71.4	46.6	88	26
May 25	71.9	47.1	91	36
May 26	72.4	47.6	93	34
May 27	72.9	48.0	94	34
May 28	73.4	48.5	92	31
May 29	73.7	48.9	95	39
May 30	74.0	49.3	90	34
May 31	74.3	49.7	92	36

Weather Station Details

Years	Station	Coordinates
1984–2024	Casselton Agronomy Farm	location