Princeton Weather in May
Average highs run from 85°F on May 1 to 88°F on May 31, and lows from 65°F to 70°F. Normal precipitation for the month is 5.63 in over about 11 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
- 86°F
- Average low
- 68°F
- Precipitation
- 5.63 in
- Record high
- 96°FMay 16, 1995
- Record low
- 48°FMay 8, 1992
- Chance of a freeze
- 0%
- Days of 90°F or more
- 5.8
- Daylight
- 13 h 08 min to 13 h 37 min
- Cloud cover
- 54%
- Humidity
- 71%
- Dew point
- 70°F
- Wind
- 11.0 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| May 1 | 85°F | 65°F | 90°F 2002 | 54°F 1992 | 26% |
| May 2 | 85°F | 65°F | 89°F 2002 | 56°F 1992 | 26% |
| May 3 | 85°F | 66°F | 90°F 2002 | 54°F 1992 | 27% |
| May 4 | 85°F | 66°F | 91°F 2014 | 55°F 2006 | 27% |
| May 5 | 86°F | 66°F | 90°F 1995 | 53°F 1992 | 27% |
| May 6 | 86°F | 66°F | 92°F 1998 | 54°F 1992 | 28% |
| May 7 | 86°F | 66°F | 91°F 2021 | 54°F 2017 | 28% |
| May 8 | 86°F | 66°F | 93°F 2021 | 48°F 1992 | 29% |
| May 9 | 86°F | 66°F | 91°F 1998 | 52°F 1992 | 29% |
| May 10 | 86°F | 67°F | 94°F 2011 | 57°F 1992 | 30% |
| May 11 | 86°F | 67°F | 92°F 1998 | 58°F 1992 | 31% |
| May 12 | 86°F | 67°F | 94°F 2006 | 57°F 1992 | 31% |
| May 13 | 86°F | 67°F | 94°F 2011 | 57°F 1992 | 32% |
| May 14 | 86°F | 67°F | 94°F 2021 | 58°F 2006 | 33% |
| May 15 | 86°F | 67°F | 93°F 2016 | 61°F 2006 | 34% |
| May 16 | 86°F | 68°F | 96°F 1995 | 60°F 1998 | 35% |
| May 17 | 86°F | 68°F | 94°F 1995 | 61°F 2001 | 36% |
| May 18 | 86°F | 68°F | 94°F 1995 | 59°F 2001 | 37% |
| May 19 | 87°F | 68°F | 92°F 1994 | 60°F 2006 | 38% |
| May 20 | 87°F | 68°F | 93°F 1995 | 62°F 2000 | 39% |
| May 21 | 87°F | 68°F | 93°F 2015 | 64°F 1993 | 40% |
| May 22 | 87°F | 69°F | 95°F 2015 | 62°F 1993 | 41% |
| May 23 | 87°F | 69°F | 94°F 2015 | 58°F 1994 | 42% |
| May 24 | 87°F | 69°F | 93°F 2013 | 61°F 1990 | 42% |
| May 25 | 87°F | 69°F | 95°F 2013 | 60°F 1992 | 43% |
| May 26 | 87°F | 69°F | 91°F 1999 | 58°F 1992 | 44% |
| May 27 | 87°F | 69°F | 92°F 2017 | 60°F 1992 | 45% |
| May 28 | 87°F | 70°F | 95°F 2017 | 64°F 1992 | 46% |
| May 29 | 87°F | 70°F | 96°F 2017 | 64°F 2021 | 47% |
| May 30 | 88°F | 70°F | 92°F 2017 | 64°F 1991 | 48% |
| May 31 | 88°F | 70°F | 93°F 2012 | 66°F 1991 | 49% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- May 1
- sunrise 6:45 AM, sunset 7:53 PM
- May 31
- sunrise 6:31 AM, sunset 8:08 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00087020 (Perrine 4W), public domain. Records: NOAA GHCN-Daily, station USC00087020, 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.