Harlem Weather in May
Average highs run from 64°F on May 1 to 73°F on May 31, and lows from 34°F to 46°F. Normal precipitation for the month is 1.89 in over about 10 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
- 69°F
- Average low
- 40°F
- Precipitation
- 1.89 in
- Record high
- 95°FMay 27, 2026
- Record low
- 19°FMay 1, 2013
- Chance of a freeze
- 96%
- Days of 90°F or more
- 1.3
- Daylight
- 14 h 35 min to 15 h 50 min
- Cloud cover
- 66%
- Humidity
- 55%
- Dew point
- 37°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 | 64°F | 34°F | 84°F 2000 | 19°F 2013 | 24% |
| May 2 | 65°F | 34°F | 85°F 2000 | 23°F 2005 | 24% |
| May 3 | 65°F | 34°F | 85°F 1998 | 24°F 2005 | 25% |
| May 4 | 65°F | 35°F | 83°F 2016 | 23°F 2002 | 25% |
| May 5 | 66°F | 35°F | 86°F 2016 | 30°F 2026 | 26% |
| May 6 | 66°F | 36°F | 87°F 2017 | 23°F 2026 | 26% |
| May 7 | 66°F | 36°F | 85°F 2017 | 29°F 2002 | 26% |
| May 8 | 67°F | 36°F | 80°F 2007 | 27°F 2010 | 27% |
| May 9 | 67°F | 37°F | 82°F 2007 | 26°F 2002 | 27% |
| May 10 | 67°F | 37°F | 90°F 2025 | 27°F 2004 | 28% |
| May 11 | 68°F | 38°F | 89°F 2025 | 29°F 2002 | 28% |
| May 12 | 68°F | 38°F | 86°F 2001 | 28°F 2004 | 29% |
| May 13 | 68°F | 38°F | 89°F 2001 | 24°F 2004 | 29% |
| May 14 | 69°F | 39°F | 90°F 2001 | 23°F 2005 | 30% |
| May 15 | 69°F | 39°F | 86°F 1997 | 32°F 2020 | 30% |
| May 16 | 69°F | 40°F | 86°F 2012 | 33°F 2026 | 31% |
| May 17 | 70°F | 40°F | 87°F 2012 | 33°F 1999 | 31% |
| May 18 | 70°F | 41°F | 91°F 2006 | 27°F 2015 | 32% |
| May 19 | 70°F | 41°F | 91°F 2006 | 30°F 2019 | 33% |
| May 20 | 70°F | 42°F | 82°F 2008 | 30°F 2019 | 33% |
| May 21 | 71°F | 42°F | 84°F 2006 | 30°F 2019 | 34% |
| May 22 | 71°F | 42°F | 90°F 2006 | 28°F 2022 | 34% |
| May 23 | 71°F | 43°F | 90°F 2006 | 35°F 2022 | 35% |
| May 24 | 71°F | 43°F | 90°F 2006 | 34°F 2007 | 35% |
| May 25 | 72°F | 44°F | 90°F 2026 | 32°F 2004 | 36% |
| May 26 | 72°F | 44°F | 91°F 2026 | 37°F 2010 | 36% |
| May 27 | 72°F | 44°F | 95°F 2026 | 37°F 2005 | 37% |
| May 28 | 72°F | 45°F | 92°F 2026 | 36°F 2012 | 37% |
| May 29 | 73°F | 45°F | 90°F 2026 | 34°F 2012 | 37% |
| May 30 | 73°F | 45°F | 90°F 2026 | 37°F 2010 | 38% |
| May 31 | 73°F | 46°F | 89°F 2009 | 37°F 2024 | 38% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (MDT).
- May 1
- sunrise 5:55 AM, sunset 8:30 PM
- May 31
- sunrise 5:18 AM, sunset 9:08 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00243929 (Harlem), public domain. Records: NOAA GHCN-Daily, station USC00245334, 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.