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Watertown May Weather

Averages and records for weather in Watertown, South Dakota in the month of May.

Typical Watertown May Weather 1991–2020
Average daily high	67.3 °F
Average daily low	44.7 °F
Average monthly precipitation	2.8 inches
Average monthly snow	0.1 inches
Daily chance of precipitation	36.8%
Daily chance of snow	0.12%

Watertown May Weather Records 1893–2024
Highest temperature	106 °F	May 30, 1934
Lowest temperature	16 °F	May 3, 1907
Highest daily low	73 °F	May 31, 1934
Lowest daily high	30 °F	May 4, 1944
Hottest average high temperature	85.1 °F	1934
Coldest average high temperature	56.6 °F	1907
Most daily precipitation	7.1 inches	May 27, 1931
Most monthly precipitation	8.8 inches	1962
Most daily snow	3.0 inches	May 2, 1954
Most monthly snow	6.0 inches	1907

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	38.2	95	18
May 2	61.8	38.7	89	17
May 3	62.2	39.1	92	16
May 4	62.8	39.5	90	19
May 5	63.2	39.9	91	23
May 6	63.7	40.3	91	17
May 7	64.0	40.8	89	21
May 8	64.4	41.3	99	24
May 9	64.5	41.7	93	19
May 10	64.9	42.2	90	21
May 11	65.3	42.5	91	19
May 12	65.6	42.9	87	19
May 13	66.0	43.4	92	25
May 14	66.5	43.8	94	25
May 15	66.9	44.3	96	23
May 16	67.4	44.8	99	23
May 17	67.8	45.2	99	21
May 18	68.0	45.7	94	25
May 19	68.3	46.1	94	28
May 20	68.6	46.4	96	26
May 21	68.9	46.7	92	28
May 22	69.2	47.1	92	22
May 23	69.7	47.4	92	30
May 24	70.1	47.8	95	20
May 25	70.4	48.1	92	28
May 26	70.9	48.6	91	30
May 27	71.3	49.1	96	28
May 28	71.7	49.5	102	31
May 29	72.0	49.8	97	31
May 30	72.3	50.2	106	31
May 31	72.6	50.6	101	24

Weather Station Details

Years	Station	Coordinates
1893–2024	Watertown Regional Airport	location