Grants Pass weather in May: Grants Pass, Oregon: normal highs, lows, rain and records for May
Grants Pass in May has a normal high of 74°F and a normal low of 46°F, a daily mean of 60°F, rising from 70°F on the 1st to 77°F by the 31st. Measurable precipitation falls on 9 days in a normal May, 1.39 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 23°C and low of 8°C, 35 mm of precipitation in May.
- NOAA stationGrants Pass
- Station IDUSC00353445
- Location42.42°N 123.32°W
- Elevation932 ft (284 m)
- Population39,468
- Jan 48° 35°
- Feb 54° 36°
- Mar 60° 37°
- Apr 65° 40°
- May 74° 46°
- Jun 81° 51°
- Jul 91° 56°
- Aug 91° 55°
- Sep 84° 48°
- Oct 70° 41°
- Nov 54° 39°
- Dec 46° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Grants Pass in May?
The normal high is 74°F and the normal low 46°F, for a daily mean of 59.9°F. May is 7.3°F warmer than April and 6.0°F cooler than June. May is the 5th warmest month of the year in Grants Pass and the 8th wettest. Across the month the normal high rises 7°F, from 70°F on May 1 to 77°F on May 31. From one year to the next May's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Mays in three average between 57°F and 63°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 34%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 70°F | 43°F | 34% | 17% |
| May 8 | 72°F | 44°F | 31% | 15% |
| May 15 | 74°F | 46°F | 29% | 14% |
| May 22 | 76°F | 47°F | 28% | 13% |
| May 31 | 77°F | 48°F | 24% | 12% |
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 | 70°F | 43°F | 34% | 17% | 14 h |
| May 2 | 70°F | 43°F | 34% | 16% | 14 h |
| May 3 | 71°F | 43°F | 33% | 16% | 14 h 10 min |
| May 4 | 71°F | 43°F | 33% | 16% | 14 h 10 min |
| May 5 | 71°F | 44°F | 32% | 16% | 14 h 10 min |
| May 6 | 72°F | 44°F | 32% | 15% | 14 h 10 min |
| May 7 | 72°F | 44°F | 32% | 15% | 14 h 20 min |
| May 8 | 72°F | 44°F | 31% | 15% | 14 h 20 min |
| May 9 | 73°F | 45°F | 31% | 15% | 14 h 20 min |
| May 10 | 73°F | 45°F | 31% | 14% | 14 h 20 min |
| May 11 | 73°F | 45°F | 30% | 14% | 14 h 30 min |
| May 12 | 73°F | 45°F | 30% | 14% | 14 h 30 min |
| May 13 | 74°F | 45°F | 30% | 14% | 14 h 30 min |
| May 14 | 74°F | 46°F | 30% | 14% | 14 h 30 min |
| May 15 | 74°F | 46°F | 29% | 14% | 14 h 30 min |
| May 16 | 74°F | 46°F | 29% | 14% | 14 h 40 min |
| May 17 | 75°F | 46°F | 29% | 14% | 14 h 40 min |
| May 18 | 75°F | 46°F | 29% | 14% | 14 h 40 min |
| May 19 | 75°F | 46°F | 29% | 14% | 14 h 40 min |
| May 20 | 75°F | 47°F | 28% | 14% | 14 h 40 min |
| May 21 | 75°F | 47°F | 28% | 13% | 14 h 50 min |
| May 22 | 76°F | 47°F | 28% | 13% | 14 h 50 min |
| May 23 | 76°F | 47°F | 27% | 13% | 14 h 50 min |
| May 24 | 76°F | 47°F | 27% | 13% | 14 h 50 min |
| May 25 | 76°F | 47°F | 27% | 13% | 14 h 50 min |
| May 26 | 76°F | 48°F | 26% | 13% | 14 h 50 min |
| May 27 | 77°F | 48°F | 26% | 12% | 15 h |
| May 28 | 77°F | 48°F | 25% | 12% | 15 h |
| May 29 | 77°F | 48°F | 25% | 12% | 15 h |
| May 30 | 77°F | 48°F | 24% | 12% | 15 h |
| May 31 | 77°F | 48°F | 24% | 12% | 15 h |
- Normal high
- 74°FMay average
- Normal low
- 46°FMay average
- Precipitation
- 1.39 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 3
- Nights at 32°F or colder
- 1
- Daylight
- 14 h to 15 hMay 1 to May 31
- Days at 70°F or more
- 20
- Days at 80°F or more
- 10
- Sunshine
- 78%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00353445; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Grants Pass in May?
On a given May day the chance of 0.01 inch or more is 29% on average, highest around May 1 (34%). In all, 1.39 in falls on 9 days of a normal May.
In a normal May in Grants Pass, 3 days reach 90°F and 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00353445.
What are the records for May in Grants Pass?
The warmest May temperature on this station's record (since 1893) is 102°F, on May 30, 1986; the coldest is 24°F, on May 2, 1894. The wettest May brought 4.80 in (1896).
The May mean against the 1991-2020 normal of 59.9°F: 2021 61.8°F (+1.9), 2022 57.1°F (−2.8), 2023 63.7°F (+3.8), 2024 59.8°F (−0.1), 2025 61.8°F (+1.9), 2026 64.9°F (+5.0). 4 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 61.8°F | +1.9°F | 0.10 in |
| 2022 | 57.1°F | −2.8°F | 1.05 in |
| 2023 | 63.7°F | +3.8°F | 0.69 in |
| 2024 | 59.8°F | −0.1°F | 0.88 in |
| 2025 | 61.8°F | +1.9°F | 0.54 in |
| 2026 | 64.9°F | +5.0°F | 0.32 in |
Source: records: ACIS, station USC00353445; recent months: ACIS, station USC00353445. Records and recent months use complete months only.
How does May in Grants Pass 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; Grants Pass's is 74°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.