O'Brien Weather in May
Average highs run from 71°F on May 1 to 79°F on May 31, and lows from 40°F to 44°F. Normal precipitation for the month is 2.09 in over about 8 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
- 76°F
- Average low
- 42°F
- Precipitation
- 2.09 in
- Record high
- 89°FMay 5, 2013
- Record low
- 33°FMay 31, 2006
- Chance of a freeze
- 49%
- Days of 90°F or more
- 3.3
- Daylight
- 14 h 04 min to 15 h 02 min
- Cloud cover
- 58%
- Humidity
- 81%
- Dew point
- 45°F
- Wind
- 4.0 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 | 71°F | 40°F | 81°F 2014 | 37°F 2008 | 32% | 0% |
| May 2 | 72°F | 40°F | 82°F 2013 | 39°F 2012 | 32% | 0% |
| May 3 | 72°F | 40°F | 74°F 2013 | 39°F 2002 | 31% | 0% |
| May 4 | 72°F | 40°F | 78°F 2006 | 37°F 2010 | 31% | 0% |
| May 5 | 73°F | 41°F | 89°F 2013 | 35°F 2010 | 30% | 0% |
| May 6 | 73°F | 41°F | 65°F 2016 | 34°F 2010 | 29% | 0% |
| May 7 | 73°F | 41°F | 77°F 2007 | 40°F 2002 | 29% | 0% |
| May 8 | 74°F | 41°F | 83°F 2007 | 39°F 2008 | 29% | 0% |
| May 9 | 74°F | 41°F | 72°F 2018 | 38°F 2008 | 28% | 0% |
| May 10 | 74°F | 42°F | 68°F 2004 | 39°F 2003 | 28% | 0% |
| May 11 | 74°F | 42°F | 71°F 2016 | 42°F 2010 | 27% | 0% |
| May 12 | 75°F | 42°F | 74°F 2002 | 38°F 2008 | 27% | 0% |
| May 13 | 75°F | 42°F | 72°F 2006 | 38°F 2008 | 27% | 0% |
| May 14 | 75°F | 42°F | 71°F 2014 | 39°F 2010 | 26% | 0% |
| May 15 | 76°F | 42°F | 85°F 2008 | 41°F 2002 | 26% | 0% |
| May 16 | 76°F | 43°F | 73°F 2002 | 39°F 2003 | 26% | 0% |
| May 17 | 76°F | 43°F | 89°F 2008 | 38°F 2003 | 26% | 0% |
| May 18 | 76°F | 43°F | 80°F 2008 | 39°F 2003 | 25% | 0% |
| May 19 | 76°F | 43°F | 68°F 2004 | 43°F 2007 | 25% | 0% |
| May 20 | 77°F | 43°F | 76°F 2011 | 42°F 2021 | 25% | 0% |
| May 21 | 77°F | 43°F | 70°F 2006 | 38°F 2019 | 24% | 0% |
| May 22 | 77°F | 43°F | 70°F 2006 | 38°F 2009 | 24% | 0% |
| May 23 | 77°F | 43°F | 71°F 2003 | 38°F 2010 | 24% | 0% |
| May 24 | 78°F | 44°F | 75°F 2002 | 39°F 2010 | 23% | 0% |
| May 25 | 78°F | 44°F | 75°F 2004 | 42°F 2007 | 23% | 0% |
| May 26 | 78°F | 44°F | 82°F 2005 | 43°F 2009 | 22% | 0% |
| May 27 | 78°F | 44°F | 71°F 2004 | 42°F 2006 | 22% | 0% |
| May 28 | 78°F | 44°F | 70°F 2003 | 41°F 2009 | 22% | 0% |
| May 29 | 79°F | 44°F | 76°F 2007 | 40°F 2009 | 21% | 0% |
| May 30 | 79°F | 44°F | 68°F 2014 | 41°F 2009 | 21% | 0% |
| May 31 | 79°F | 44°F | 70°F 2002 | 33°F 2006 | 20% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- May 1
- sunrise 6:10 AM, sunset 8:14 PM
- May 31
- sunrise 5:42 AM, sunset 8:44 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00351448 (Cave Junction 1 Wnw), public domain. Records: NOAA GHCN-Daily, station USC00351058, 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.