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Olney May Weather

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

Typical Olney May Weather 1991–2020
Average daily high	75.8 °F
Average daily low	54.1 °F
Average monthly precipitation	5.6 inches
Average monthly snow	none
Daily chance of precipitation	40.9%
Daily chance of snow	0%

Olney May Weather Records 1893–2024
Highest temperature	98 °F	May 29, 1911
Lowest temperature	29 °F	May 4, 1976
Highest daily low	75 °F	May 22, 1953
Lowest daily high	45 °F	May 10, 1960
Hottest average high temperature	84.1 °F	1962
Coldest average high temperature	69.1 °F	1917
Most daily precipitation	5.4 inches	May 7, 1961
Most monthly precipitation	12.8 inches	1943
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	71.1	48.9	90	29
May 2	71.4	49.2	90	32
May 3	71.6	49.6	90	32
May 4	71.7	49.9	91	29
May 5	71.9	50.1	93	34
May 6	72.2	50.3	92	32
May 7	72.5	50.7	90	31
May 8	72.8	51.0	90	34
May 9	73.2	51.3	91	31
May 10	73.6	51.7	91	30
May 11	73.9	52.1	90	32
May 12	74.2	52.5	92	32
May 13	74.6	52.9	89	35
May 14	75.0	53.3	90	34
May 15	75.4	53.7	91	34
May 16	75.7	54.0	91	35
May 17	76.1	54.4	92	35
May 18	76.5	54.7	92	35
May 19	76.8	55.1	91	36
May 20	77.1	55.4	96	36
May 21	77.3	55.8	94	35
May 22	77.5	56.0	95	37
May 23	77.7	56.1	93	37
May 24	77.9	56.4	94	41
May 25	78.2	56.7	96	33
May 26	78.4	56.9	97	34
May 27	78.7	57.2	98	33
May 28	79.1	57.7	98	38
May 29	79.6	58.1	98	38
May 30	80.0	58.6	96	38
May 31	80.4	58.9	96	36

Weather Station Details

Years	Station	Coordinates
1893–2024	Olney 2S	location