Merton Weather in May
Average highs run from 62°F on May 1 to 74°F on May 31, and lows from 40°F to 51°F. Normal precipitation for the month is 4.13 in.
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
- 68°F
- Average low
- 45°F
- Precipitation
- 4.13 in
- Record high
- 101°FMay 31, 1934
- Record low
- 25°FMay 1, 1943
- Chance of a freeze
- 50%
- Days of 90°F or more
- 0.5
- Daylight
- 14 h 08 min to 15 h 09 min
- Cloud cover
- 65%
- Humidity
- 77%
- Dew point
- 49°F
- Wind
- 10.7 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 | 62°F | 40°F | 89°F 1952 | 25°F 1943 | ||
| May 2 | 62°F | 40°F | 85°F 1965 | 25°F 1911 | ||
| May 3 | 63°F | 40°F | 87°F 1938 | 29°F 1917 | ||
| May 4 | 63°F | 41°F | 89°F 1952 | 25°F 1935 | ||
| May 5 | 63°F | 41°F | 90°F 1949 | 31°F 1900 | ||
| May 6 | 64°F | 42°F | 91°F 1934 | 29°F 1954 | ||
| May 7 | 64°F | 42°F | 88°F 1934 | 28°F 2026 | ||
| May 8 | 65°F | 42°F | 87°F 1979 | 29°F 1947 | ||
| May 9 | 65°F | 43°F | 92°F 1934 | 25°F 1947 | ||
| May 10 | 66°F | 43°F | 88°F 1934 | 27°F 1907 | ||
| May 11 | 66°F | 44°F | 86°F 1922 | 27°F 1913 | ||
| May 12 | 66°F | 44°F | 86°F 1900 | 29°F 1928 | ||
| May 13 | 67°F | 44°F | 87°F 1900 | 27°F 1923 | ||
| May 14 | 67°F | 45°F | 87°F 1977 | 30°F 1895 | ||
| May 15 | 68°F | 45°F | 88°F 2007 | 31°F 1920 | ||
| May 16 | 68°F | 46°F | 90°F 1962 | 32°F 1920 | ||
| May 17 | 69°F | 46°F | 90°F 1962 | 30°F 1983 | ||
| May 18 | 69°F | 46°F | 90°F 1962 | 32°F 1925 | ||
| May 19 | 69°F | 47°F | 96°F 1934 | 30°F 1929 | ||
| May 20 | 70°F | 47°F | 91°F 1934 | 29°F 1895 | ||
| May 21 | 70°F | 47°F | 90°F 1977 | 28°F 2002 | ||
| May 22 | 71°F | 48°F | 91°F 1994 | 34°F 1917 | ||
| May 23 | 71°F | 48°F | 90°F 1921 | 31°F 1917 | ||
| May 24 | 71°F | 48°F | 89°F 1950 | 33°F 1925 | ||
| May 25 | 72°F | 49°F | 92°F 1911 | 29°F 1925 | 0% | |
| May 26 | 72°F | 49°F | 91°F 1911 | 30°F 1925 | 0% | |
| May 27 | 73°F | 49°F | 92°F 1911 | 32°F 1961 | 0% | |
| May 28 | 73°F | 50°F | 91°F 1977 | 34°F 1894 | 0% | |
| May 29 | 73°F | 50°F | 89°F 1895 | 33°F 1930 | 0% | |
| May 30 | 74°F | 50°F | 90°F 1937 | 33°F 1894 | 0% | |
| May 31 | 74°F | 51°F | 101°F 1934 | 34°F 1897 | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- May 1
- sunrise 5:47 AM, sunset 7:55 PM
- May 31
- sunrise 5:17 AM, sunset 8:26 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00477148 (Richfield 3 Ssw), public domain. Records: NOAA GHCN-Daily, station USC00478937, 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.