Evanston Weather in May
Average highs run from 58°F on May 1 to 68°F on May 31, and lows from 31°F to 38°F. Normal precipitation for the month is 1.89 in over about 7 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
- 63°F
- Average low
- 35°F
- Precipitation
- 1.89 in
- Snowfall
- 1.0 in
- Record high
- 85°FMay 29, 2003
- Record low
- 13°FMay 8, 2002
- Chance of a freeze
- 100%
- Daylight
- 14 h 00 min to 14 h 56 min
- Cloud cover
- 59%
- Humidity
- 59%
- Dew point
- 32°F
- Wind
- 7.8 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 | 58°F | 31°F | 74°F 2021 | 17°F 2008 | 24% | 4% |
| May 2 | 58°F | 31°F | 72°F 2015 | 19°F 2008 | 24% | 4% |
| May 3 | 58°F | 31°F | 75°F 2000 | 24°F 2008 | 24% | 4% |
| May 4 | 59°F | 32°F | 75°F 2000 | 24°F 2011 | 24% | 4% |
| May 5 | 59°F | 32°F | 75°F 2016 | 23°F 2010 | 24% | 4% |
| May 6 | 59°F | 32°F | 75°F 2018 | 20°F 2010 | 24% | 3% |
| May 7 | 60°F | 32°F | 74°F 2021 | 17°F 2010 | 24% | 3% |
| May 8 | 60°F | 33°F | 72°F 2018 | 13°F 2002 | 24% | 3% |
| May 9 | 61°F | 33°F | 76°F 2018 | 19°F 2002 | 24% | 3% |
| May 10 | 61°F | 33°F | 74°F 2004 | 24°F 2008 | 24% | 3% |
| May 11 | 61°F | 34°F | 78°F 2026 | 22°F 2000 | 24% | 3% |
| May 12 | 62°F | 34°F | 81°F 2026 | 18°F 2000 | 24% | 3% |
| May 13 | 62°F | 34°F | 79°F 2013 | 24°F 2008 | 24% | 3% |
| May 14 | 62°F | 34°F | 78°F 2013 | 28°F 2004 | 24% | 2% |
| May 15 | 63°F | 35°F | 78°F 2012 | 31°F 2025 | 24% | 2% |
| May 16 | 63°F | 35°F | 77°F 2022 | 29°F 2015 | 24% | 2% |
| May 17 | 64°F | 35°F | 77°F 2006 | 23°F 2017 | 24% | 2% |
| May 18 | 64°F | 35°F | 78°F 2009 | 22°F 2017 | 24% | 2% |
| May 19 | 64°F | 36°F | 77°F 2002 | 24°F 2003 | 24% | 2% |
| May 20 | 65°F | 36°F | 80°F 2008 | 27°F 2022 | 24% | 2% |
| May 21 | 65°F | 36°F | 80°F 2012 | 25°F 2022 | 24% | 2% |
| May 22 | 65°F | 36°F | 74°F 2003 | 22°F 2007 | 24% | 2% |
| May 23 | 66°F | 36°F | 78°F 2003 | 24°F 2007 | 23% | 2% |
| May 24 | 66°F | 37°F | 76°F 2001 | 24°F 2012 | 23% | 1% |
| May 25 | 66°F | 37°F | 79°F 2018 | 27°F 2010 | 23% | 1% |
| May 26 | 67°F | 37°F | 80°F 2022 | 31°F 2004 | 23% | 1% |
| May 27 | 67°F | 37°F | 79°F 2003 | 30°F 2011 | 23% | 1% |
| May 28 | 67°F | 37°F | 84°F 2003 | 28°F 2006 | 23% | 1% |
| May 29 | 68°F | 38°F | 85°F 2003 | 28°F 2006 | 23% | 1% |
| May 30 | 68°F | 38°F | 83°F 2003 | 27°F 2004 | 23% | 1% |
| May 31 | 68°F | 38°F | 83°F 2002 | 31°F 2011 | 23% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- May 1
- sunrise 6:21 AM, sunset 8:21 PM
- May 31
- sunrise 5:54 AM, sunset 8:50 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00483100 (Evanston 1 E), public domain. Records: NOAA GHCN-Daily, station USW00004111, 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.