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Green Bay May Weather

Averages and records for weather in Green Bay, Wisconsin in the month of May.

Typical Green Bay May Weather 1991–2020
Average daily high	67.3 °F
Average daily low	45.5 °F
Average monthly precipitation	3.3 inches
Average monthly snow	0.0 inches
Daily chance of precipitation	40.0%
Daily chance of snow	0.32%

Green Bay May Weather Records 1886–2024
Highest temperature	99 °F	May 31, 1934
Lowest temperature	21 °F	May 9, 1966
Highest daily low	71 °F	May 27, 1911
Lowest daily high	35 °F	May 1, 1909
Hottest average high temperature	76.6 °F	1977
Coldest average high temperature	55.9 °F	1907
Most daily precipitation	2.9 inches	May 28, 2020
Most monthly precipitation	9.7 inches	1918
Most daily snow	4.3 inches	May 10, 1990
Most monthly snow	4.3 inches	1990

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	60.8	39.9	90	25
May 2	61.2	40.2	91	22
May 3	61.5	40.5	86	27
May 4	61.8	40.7	89	27
May 5	62.3	41.0	90	26
May 6	62.8	41.3	92	24
May 7	63.2	41.7	87	27
May 8	63.7	42.1	88	25
May 9	64.0	42.5	92	21
May 10	64.4	42.9	86	24
May 11	64.8	43.3	88	28
May 12	65.3	43.8	94	25
May 13	65.8	44.2	92	29
May 14	66.3	44.7	89	29
May 15	66.8	45.1	87	29
May 16	67.3	45.4	87	28
May 17	67.7	45.7	88	29
May 18	68.0	46.0	88	30
May 19	68.3	46.4	89	31
May 20	68.6	46.6	90	30
May 21	68.8	46.9	88	30
May 22	69.1	47.2	91	29
May 23	69.4	47.5	88	29
May 24	69.8	47.8	90	33
May 25	70.2	48.1	89	32
May 26	70.5	48.5	92	31
May 27	71.0	48.9	97	31
May 28	71.4	49.4	89	31
May 29	71.8	49.8	91	32
May 30	72.1	50.2	92	33
May 31	72.3	50.5	99	34

Weather Station Details

Years	Station	Coordinates
1886–2024	Green Bay	location