Coos Bay weather in May: Coos Bay, Oregon: normal highs, lows, rain and records for May
Coos Bay in May has a normal high of 60°F and a normal low of 44°F, a daily mean of 52°F, rising from 58°F on the 1st to 61°F by the 31st. Measurable precipitation falls on 16 days in a normal May, 2.87 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 15°C and low of 7°C, 73 mm of precipitation in May.
- NOAA stationCoos Bay (8 mi SW)
- Station IDUSW00004141
- Location43.27°N 124.32°W
- Elevation12 ft (4 m)
- Population15,801
- Jan 52° 36°
- Feb 54° 37°
- Mar 56° 38°
- Apr 57° 39°
- May 60° 44°
- Jun 62° 47°
- Jul 64° 51°
- Aug 66° 50°
- Sep 66° 47°
- Oct 63° 42°
- Nov 56° 39°
- Dec 51° 36°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Coos Bay in May?
The normal high is 60°F and the normal low 44°F, for a daily mean of 51.9°F. May is 3.8°F warmer than April and 2.8°F cooler than June. May is the 6th warmest month of the year in Coos Bay and the 8th wettest. Across the month the normal high rises 3°F, from 58°F on May 1 to 61°F on May 31. From one year to the next May's mean temperature typically moves about 1.5°F either way (NOAA's standard deviation), so roughly two Mays in three average between 50°F and 53°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 54%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 58°F | 42°F | 54% | 29% |
| May 8 | 59°F | 43°F | 51% | 26% |
| May 15 | 60°F | 44°F | 51% | 24% |
| May 22 | 60°F | 45°F | 50% | 22% |
| May 31 | 61°F | 46°F | 48% | 19% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 58°F | 42°F | 54% | 29% | 14 h 10 min |
| May 2 | 58°F | 42°F | 53% | 29% | 14 h 10 min |
| May 3 | 58°F | 42°F | 53% | 28% | 14 h 10 min |
| May 4 | 59°F | 42°F | 52% | 27% | 14 h 10 min |
| May 5 | 59°F | 43°F | 52% | 27% | 14 h 20 min |
| May 6 | 59°F | 43°F | 52% | 26% | 14 h 20 min |
| May 7 | 59°F | 43°F | 52% | 26% | 14 h 20 min |
| May 8 | 59°F | 43°F | 51% | 26% | 14 h 20 min |
| May 9 | 59°F | 43°F | 51% | 25% | 14 h 30 min |
| May 10 | 59°F | 43°F | 51% | 25% | 14 h 30 min |
| May 11 | 59°F | 44°F | 51% | 25% | 14 h 30 min |
| May 12 | 59°F | 44°F | 51% | 24% | 14 h 30 min |
| May 13 | 59°F | 44°F | 51% | 24% | 14 h 30 min |
| May 14 | 60°F | 44°F | 51% | 24% | 14 h 40 min |
| May 15 | 60°F | 44°F | 51% | 24% | 14 h 40 min |
| May 16 | 60°F | 44°F | 51% | 24% | 14 h 40 min |
| May 17 | 60°F | 45°F | 51% | 23% | 14 h 40 min |
| May 18 | 60°F | 45°F | 51% | 23% | 14 h 40 min |
| May 19 | 60°F | 45°F | 51% | 23% | 14 h 50 min |
| May 20 | 60°F | 45°F | 51% | 23% | 14 h 50 min |
| May 21 | 60°F | 45°F | 51% | 22% | 14 h 50 min |
| May 22 | 60°F | 45°F | 50% | 22% | 14 h 50 min |
| May 23 | 60°F | 45°F | 50% | 22% | 14 h 50 min |
| May 24 | 61°F | 45°F | 50% | 21% | 15 h |
| May 25 | 61°F | 45°F | 50% | 21% | 15 h |
| May 26 | 61°F | 45°F | 49% | 21% | 15 h |
| May 27 | 61°F | 46°F | 49% | 20% | 15 h |
| May 28 | 61°F | 46°F | 49% | 20% | 15 h |
| May 29 | 61°F | 46°F | 48% | 20% | 15 h |
| May 30 | 61°F | 46°F | 48% | 20% | 15 h 10 min |
| May 31 | 61°F | 46°F | 48% | 19% | 15 h 10 min |
- Normal high
- 60°FMay average
- Normal low
- 44°FMay average
- Precipitation
- 2.87 inmonth total
- Days with precipitation
- 160.01 inch or more
- Nights at 32°F or colder
- 1
- Daylight
- 14 h 10 min to 15 h 10 minMay 1 to May 31
- Days at 70°F or more
- 1
- Sunshine
- 73%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00004141; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Coos Bay in May?
On a given May day the chance of 0.01 inch or more is 51% on average, highest around May 1 (54%). In all, 2.87 in falls on 16 days of a normal May, 1 of them with an inch or more.
In a normal May in Coos Bay, 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00004141.
What are the records for May in Coos Bay?
The May mean against the 1991-2020 normal of 51.9°F: 2021 50.9°F (−1.0), 2022 49.8°F (−2.1), 2024 50.2°F (−1.7), 2025 49.5°F (−2.4), 2026 53.4°F (+1.5). 1 of 5 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 50.9°F | −1.0°F | 1.58 in |
| 2022 | 49.8°F | −2.1°F | 6.76 in |
| 2024 | 50.2°F | −1.7°F | 3.75 in |
| 2025 | 49.5°F | −2.4°F | 0.84 in |
| 2026 | 53.4°F | +1.5°F | 0.00 in |
Source: recent months: ACIS, station USW00004141. Records and recent months use complete months only.
How does May in Coos Bay compare across Oregon?
Across the 105 places PlainClimate covers in Oregon, May normal highs run from 54°F in Government Camp to 76°F in Ontario; Coos Bay's is 60°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.