Olney Weather in May
Average highs run from 80°F on May 1 to 88°F on May 31, and lows from 54°F to 65°F. Normal precipitation for the month is 3.92 in over about 7 wet days.
May day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 84°F
- Average low
- 59°F
- Precipitation
- 3.92 in
- Record high
- 107°FMay 24, 2000
- Record low
- 33°FMay 1, 2014
- Chance of a freeze
- 1%
- Days of 90°F or more
- 9.6
- Daylight
- 13 h 31 min to 14 h 12 min
- Cloud cover
- 53%
- Humidity
- 63%
- Dew point
- 58°F
- Wind
- 11.2 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| May 1 | 80°F | 54°F | 97°F 2002 | 33°F 2014 | 20% | 0% |
| May 2 | 80°F | 54°F | 98°F 1904 | 33°F 2014 | 20% | 0% |
| May 3 | 81°F | 54°F | 96°F 1964 | 33°F 2014 | 20% | 0% |
| May 4 | 81°F | 55°F | 101°F 1947 | 34°F 2013 | 21% | 0% |
| May 5 | 81°F | 55°F | 100°F 2012 | 40°F 1979 | 21% | 0% |
| May 6 | 81°F | 56°F | 103°F 2014 | 39°F 1935 | 21% | 0% |
| May 7 | 81°F | 56°F | 102°F 1918 | 35°F 1931 | 21% | 0% |
| May 8 | 82°F | 56°F | 103°F 1918 | 38°F 1917 | 21% | 0% |
| May 9 | 82°F | 57°F | 102°F 1918 | 39°F 1984 | 22% | 0% |
| May 10 | 82°F | 57°F | 100°F 1910 | 41°F 1997 | 22% | 0% |
| May 11 | 83°F | 57°F | 104°F 1967 | 35°F 1981 | 22% | 0% |
| May 12 | 83°F | 58°F | 103°F 1967 | 35°F 1979 | 22% | 0% |
| May 13 | 83°F | 58°F | 96°F 1984 | 39°F 1979 | 22% | 0% |
| May 14 | 83°F | 59°F | 96°F 1956 | 40°F 1971 | 22% | 0% |
| May 15 | 84°F | 59°F | 100°F 1913 | 35°F 1942 | 22% | 0% |
| May 16 | 84°F | 59°F | 103°F 1978 | 40°F 2014 | 22% | 0% |
| May 17 | 84°F | 60°F | 100°F 1913 | 40°F 1945 | 23% | 0% |
| May 18 | 84°F | 60°F | 102°F 2013 | 40°F 1976 | 23% | 0% |
| May 19 | 85°F | 60°F | 100°F 1998 | 43°F 1983 | 23% | 0% |
| May 20 | 85°F | 61°F | 101°F 1996 | 40°F 1911 | 23% | 0% |
| May 21 | 85°F | 61°F | 99°F 1934 | 42°F 2001 | 23% | 0% |
| May 22 | 86°F | 62°F | 101°F 1939 | 43°F 2001 | 23% | 0% |
| May 23 | 86°F | 62°F | 106°F 2000 | 45°F 1917 | 23% | 0% |
| May 24 | 86°F | 62°F | 107°F 2000 | 45°F 1983 | 23% | 0% |
| May 25 | 87°F | 63°F | 101°F 2012 | 46°F 1930 | 23% | 0% |
| May 26 | 87°F | 63°F | 101°F 2012 | 51°F 1966 | 23% | 0% |
| May 27 | 87°F | 63°F | 98°F 2000 | 44°F 1961 | 23% | 0% |
| May 28 | 88°F | 64°F | 106°F 2011 | 48°F 1976 | 23% | 0% |
| May 29 | 88°F | 64°F | 107°F 2011 | 45°F 1947 | 23% | 0% |
| May 30 | 88°F | 64°F | 103°F 1911 | 44°F 1947 | 23% | 0% |
| May 31 | 88°F | 65°F | 107°F 1998 | 45°F 1984 | 23% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- May 1
- sunrise 6:47 AM, sunset 8:18 PM
- May 31
- sunrise 6:27 AM, sunset 8:39 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00416636 (Olney), public domain. Records: NOAA GHCN-Daily, station USC00413668, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.