Sullivan County Weather in May
Average highs run from 61°F on May 1 to 69°F on May 31, and lows from 39°F to 49°F. Normal precipitation for the month is 4.61 in over about 14 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
- 65°F
- Average low
- 44°F
- Precipitation
- 4.61 in
- Record high
- 96°FMay 19, 1996
- Record low
- 28°FMay 5, 1966
- Chance of a freeze
- 69%
- Daylight
- 14 h 01 min to 14 h 58 min
- Cloud cover
- 67%
- Humidity
- 79%
- Dew point
- 49°F
- Wind
- 4.5 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 | 61°F | 39°F | 90°F 2010 | 30°F 1978 | 47% | 2% |
| May 2 | 61°F | 40°F | 89°F 2018 | 32°F 1960 | 47% | 1% |
| May 3 | 62°F | 40°F | 92°F 2001 | 30°F 1966 | 47% | 1% |
| May 4 | 62°F | 40°F | 91°F 2001 | 30°F 2002 | 47% | 1% |
| May 5 | 62°F | 41°F | 94°F 1949 | 28°F 1966 | 47% | 1% |
| May 6 | 63°F | 41°F | 95°F 1949 | 33°F 1968 | 47% | 1% |
| May 7 | 63°F | 42°F | 92°F 2000 | 30°F 1968 | 47% | 1% |
| May 8 | 63°F | 42°F | 88°F 2000 | 29°F 1974 | 47% | 1% |
| May 9 | 63°F | 42°F | 93°F 1963 | 29°F 2020 | 47% | 1% |
| May 10 | 64°F | 43°F | 90°F 1953 | 30°F 1966 | 47% | 1% |
| May 11 | 64°F | 43°F | 92°F 1948 | 29°F 1966 | 47% | 1% |
| May 12 | 64°F | 43°F | 90°F 1991 | 32°F 1990 | 47% | 1% |
| May 13 | 65°F | 44°F | 90°F 1991 | 30°F 2020 | 47% | 1% |
| May 14 | 65°F | 44°F | 91°F 1991 | 28°F 1996 | 47% | 1% |
| May 15 | 65°F | 44°F | 94°F 1962 | 37°F 1969 | 47% | 0% |
| May 16 | 65°F | 45°F | 90°F 1962 | 33°F 1973 | 47% | 0% |
| May 17 | 66°F | 45°F | 93°F 1962 | 31°F 1956 | 47% | 0% |
| May 18 | 66°F | 45°F | 95°F 1962 | 31°F 1983 | 47% | 0% |
| May 19 | 66°F | 45°F | 96°F 1996 | 29°F 1973 | 47% | 0% |
| May 20 | 66°F | 46°F | 96°F 1996 | 34°F 2008 | 47% | 0% |
| May 21 | 67°F | 46°F | 93°F 2022 | 32°F 2002 | 47% | 0% |
| May 22 | 67°F | 46°F | 93°F 1992 | 32°F 2002 | 47% | 0% |
| May 23 | 67°F | 47°F | 94°F 1964 | 35°F 1967 | 47% | 0% |
| May 24 | 67°F | 47°F | 90°F 1964 | 31°F 1963 | 47% | 0% |
| May 25 | 67°F | 47°F | 92°F 1991 | 31°F 1956 | 47% | 0% |
| May 26 | 68°F | 48°F | 92°F 2010 | 40°F 1968 | 47% | 0% |
| May 27 | 68°F | 48°F | 91°F 2010 | 33°F 1969 | 47% | 0% |
| May 28 | 68°F | 48°F | 93°F 1991 | 34°F 1983 | 47% | 0% |
| May 29 | 68°F | 49°F | 95°F 1969 | 37°F 1949 | 47% | 0% |
| May 30 | 69°F | 49°F | 93°F 1987 | 37°F 1949 | 47% | 0% |
| May 31 | 69°F | 49°F | 94°F 2011 | 37°F 1961 | 47% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- May 1
- sunrise 6:03 AM, sunset 8:04 PM
- May 31
- sunrise 5:35 AM, sunset 8:33 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00364815 (Laporte), public domain. Records: NOAA GHCN-Daily, station USW00014778, 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.