Monticello Weather in May
Average highs run from 78°F on May 1 to 86°F on May 31, and lows from 57°F to 66°F. Normal precipitation for the month is 4.74 in over about 9 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
- 82°F
- Average low
- 62°F
- Precipitation
- 4.74 in
- Record high
- 99°FMay 30, 1886
- Record low
- 36°FMay 12, 1960
- Chance of a freeze
- 0%
- Days of 90°F or more
- 4.0
- Daylight
- 13 h 31 min to 14 h 14 min
- Cloud cover
- 57%
- Humidity
- 76%
- Dew point
- 63°F
- Wind
- 4.9 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 | 78°F | 57°F | 89°F 1959 | 40°F 1960 | 31% | 0% |
| May 2 | 79°F | 58°F | 92°F 1949 | 40°F 1963 | 30% | 0% |
| May 3 | 79°F | 58°F | 89°F 1943 | 40°F 2013 | 30% | 0% |
| May 4 | 79°F | 58°F | 91°F 1952 | 38°F 2013 | 30% | 0% |
| May 5 | 79°F | 59°F | 92°F 1943 | 38°F 1954 | 30% | 0% |
| May 6 | 80°F | 59°F | 91°F 2012 | 38°F 1957 | 30% | 0% |
| May 7 | 80°F | 59°F | 90°F 1949 | 37°F 1992 | 30% | 0% |
| May 8 | 80°F | 60°F | 91°F 2018 | 38°F 1992 | 30% | 0% |
| May 9 | 80°F | 60°F | 91°F 2022 | 43°F 1984 | 30% | 0% |
| May 10 | 81°F | 60°F | 91°F 1887 | 42°F 1961 | 30% | 0% |
| May 11 | 81°F | 60°F | 93°F 1884 | 41°F 1952 | 30% | 0% |
| May 12 | 81°F | 61°F | 93°F 2005 | 36°F 1960 | 30% | 0% |
| May 13 | 81°F | 61°F | 92°F 1943 | 40°F 1997 | 30% | 0% |
| May 14 | 82°F | 61°F | 93°F 2018 | 42°F 1971 | 29% | 0% |
| May 15 | 82°F | 62°F | 92°F 2024 | 43°F 1979 | 29% | 0% |
| May 16 | 82°F | 62°F | 92°F 1885 | 42°F 1973 | 29% | 0% |
| May 17 | 83°F | 62°F | 93°F 1962 | 44°F 2011 | 29% | 0% |
| May 18 | 83°F | 63°F | 92°F 1956 | 43°F 1945 | 29% | 0% |
| May 19 | 83°F | 63°F | 95°F 2006 | 42°F 2002 | 29% | 0% |
| May 20 | 83°F | 63°F | 95°F 2005 | 42°F 2002 | 28% | 0% |
| May 21 | 84°F | 64°F | 95°F 1979 | 41°F 1954 | 28% | 0% |
| May 22 | 84°F | 64°F | 93°F 1941 | 39°F 1883 | 28% | 0% |
| May 23 | 84°F | 64°F | 95°F 2006 | 42°F 1883 | 28% | 0% |
| May 24 | 85°F | 64°F | 95°F 2005 | 41°F 1985 | 28% | 0% |
| May 25 | 85°F | 65°F | 95°F 2006 | 44°F 1979 | 28% | 0% |
| May 26 | 85°F | 65°F | 94°F 1964 | 42°F 1979 | 27% | 0% |
| May 27 | 85°F | 65°F | 95°F 1953 | 37°F 1961 | 27% | 0% |
| May 28 | 86°F | 66°F | 95°F 2012 | 38°F 1961 | 27% | 0% |
| May 29 | 86°F | 66°F | 96°F 1886 | 49°F 1961 | 27% | 0% |
| May 30 | 86°F | 66°F | 99°F 1886 | 42°F 1984 | 27% | 0% |
| May 31 | 86°F | 66°F | 98°F 1886 | 41°F 1984 | 27% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- May 1
- sunrise 6:19 AM, sunset 7:50 PM
- May 31
- sunrise 5:58 AM, sunset 8:12 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00053919 (Monticello Muni AP), public domain. Records: NOAA GHCN-Daily, station USW00053919, 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.