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Fairfield May Weather

Averages and records for weather in Fairfield, Illinois in the month of May.

Typical Fairfield May Weather 1991–2020
Average daily high	77.0 °F
Average daily low	54.6 °F
Average monthly precipitation	5.0 inches
Average monthly snow	none
Daily chance of precipitation	39.5%
Daily chance of snow	0%

Fairfield May Weather Records 1895–2024
Highest temperature	98 °F	May 31, 1934
Lowest temperature	29 °F	May 1, 1903
Highest daily low	74 °F	May 25, 1989
Lowest daily high	45 °F	May 3, 1921
Hottest average high temperature	86.1 °F	2018
Coldest average high temperature	71.1 °F	1917
Most daily precipitation	6.8 inches	May 8, 1961
Most monthly precipitation	12.6 inches	1961
Most daily snow	none	-
Most monthly snow	none	-

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	72.4	49.9	88	29
May 2	72.6	50.1	90	30
May 3	72.8	50.4	90	32
May 4	73.0	50.7	90	30
May 5	73.2	50.9	93	34
May 6	73.5	51.1	91	33
May 7	73.7	51.4	89	31
May 8	74.1	51.7	89	32
May 9	74.6	52.0	92	32
May 10	74.9	52.4	90	30
May 11	75.3	52.7	91	34
May 12	75.6	53.1	93	34
May 13	76.1	53.5	93	34
May 14	76.4	53.9	93	35
May 15	76.7	54.2	91	35
May 16	77.1	54.5	91	33
May 17	77.4	54.8	92	35
May 18	77.8	55.2	93	35
May 19	78.1	55.5	96	36
May 20	78.3	55.8	95	37
May 21	78.5	56.1	94	37
May 22	78.7	56.3	93	36
May 23	78.9	56.4	93	38
May 24	79.2	56.7	95	41
May 25	79.5	56.9	95	34
May 26	79.8	57.2	98	36
May 27	80.2	57.5	98	33
May 28	80.6	57.9	98	38
May 29	81.0	58.3	93	37
May 30	81.3	58.7	98	38
May 31	81.7	59.0	98	41

Weather Station Details

Years	Station	Coordinates
1895–2024	Fairfield Radio WFIW	location