Pendleton weather in May: Pendleton, Oregon: normal highs, lows, rain and records for May
Pendleton in May has a normal high of 71°F and a normal low of 45°F, a daily mean of 58°F, rising from 67°F on the 1st to 74°F by the 31st. Measurable precipitation falls on 10 days in a normal May, 1.45 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 22°C and low of 7°C, 37 mm of precipitation in May.
- NOAA stationPendleton E Or Regional Airport
- Station IDUSW00024155
- Location45.69°N 118.85°W
- Elevation1,515 ft (462 m)
- From the center2 miles
- Population17,026
- Jan 42° 28°
- Feb 46° 30°
- Mar 55° 34°
- Apr 62° 38°
- May 71° 45°
- Jun 78° 51°
- Jul 89° 57°
- Aug 88° 56°
- Sep 78° 49°
- Oct 64° 39°
- Nov 49° 32°
- Dec 41° 28°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Pendleton in May?
The normal high is 71°F and the normal low 45°F, for a daily mean of 57.9°F. May is 7.8°F warmer than April and 6.7°F cooler than June. May is the 5th warmest month of the year in Pendleton and the 3rd wettest. Across the month the normal high rises 7°F, from 67°F on May 1 to 74°F on May 31. From one year to the next May's mean temperature typically moves about 2.5°F either way (NOAA's standard deviation), so roughly two Mays in three average between 55°F and 60°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 31%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 67°F | 41°F | 31% | 14% |
| May 8 | 69°F | 43°F | 31% | 14% |
| May 15 | 71°F | 45°F | 31% | 15% |
| May 22 | 73°F | 47°F | 30% | 14% |
| May 31 | 74°F | 48°F | 28% | 13% |
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 | 67°F | 41°F | 31% | 14% | 14 h 20 min |
| May 2 | 67°F | 42°F | 31% | 14% | 14 h 20 min |
| May 3 | 67°F | 42°F | 31% | 14% | 14 h 20 min |
| May 4 | 68°F | 42°F | 31% | 14% | 14 h 20 min |
| May 5 | 68°F | 42°F | 31% | 14% | 14 h 30 min |
| May 6 | 68°F | 43°F | 31% | 14% | 14 h 30 min |
| May 7 | 69°F | 43°F | 31% | 14% | 14 h 30 min |
| May 8 | 69°F | 43°F | 31% | 14% | 14 h 40 min |
| May 9 | 69°F | 43°F | 31% | 14% | 14 h 40 min |
| May 10 | 70°F | 44°F | 31% | 14% | 14 h 40 min |
| May 11 | 70°F | 44°F | 31% | 14% | 14 h 40 min |
| May 12 | 70°F | 44°F | 31% | 14% | 14 h 50 min |
| May 13 | 70°F | 44°F | 31% | 14% | 14 h 50 min |
| May 14 | 71°F | 45°F | 31% | 14% | 14 h 50 min |
| May 15 | 71°F | 45°F | 31% | 15% | 14 h 50 min |
| May 16 | 71°F | 45°F | 31% | 15% | 15 h |
| May 17 | 72°F | 45°F | 31% | 15% | 15 h |
| May 18 | 72°F | 46°F | 31% | 15% | 15 h |
| May 19 | 72°F | 46°F | 31% | 15% | 15 h |
| May 20 | 72°F | 46°F | 31% | 15% | 15 h |
| May 21 | 72°F | 46°F | 31% | 14% | 15 h 10 min |
| May 22 | 73°F | 47°F | 30% | 14% | 15 h 10 min |
| May 23 | 73°F | 47°F | 30% | 14% | 15 h 10 min |
| May 24 | 73°F | 47°F | 30% | 14% | 15 h 10 min |
| May 25 | 73°F | 47°F | 30% | 14% | 15 h 10 min |
| May 26 | 73°F | 47°F | 30% | 14% | 15 h 20 min |
| May 27 | 74°F | 48°F | 29% | 14% | 15 h 20 min |
| May 28 | 74°F | 48°F | 29% | 14% | 15 h 20 min |
| May 29 | 74°F | 48°F | 29% | 14% | 15 h 20 min |
| May 30 | 74°F | 48°F | 29% | 14% | 15 h 20 min |
| May 31 | 74°F | 48°F | 28% | 13% | 15 h 20 min |
- Normal high
- 71°FMay average
- Normal low
- 45°FMay average
- Precipitation
- 1.45 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 1
- Nights at 32°F or colder
- 1
- Daylight
- 14 h 20 min to 15 h 20 minMay 1 to May 31
- Days at 70°F or more
- 16
- Days at 80°F or more
- 6
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024155; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Pendleton in May?
On a given May day the chance of 0.01 inch or more is 30% on average, highest around May 13 (31%). In all, 1.45 in falls on 10 days of a normal May.
In a normal May in Pendleton, 1 days reach 90°F and 1 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024155.
How humid and windy is Pendleton in May?
At 3 p.m. the normal temperature is 73°F with 34% relative humidity and a dew point of 43°F; at 6 a.m. it is 54°F with 68% humidity. The wind averages 9.1 mph, most often from the west-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 54°F | 44°F | 68% | 6.8 mph | 62% |
| 9 a.m. | 64°F | 44°F | 49% | 8.9 mph | 64% |
| noon | 70°F | 43°F | 38% | 10.0 mph | 65% |
| 3 p.m. | 73°F | 43°F | 34% | 10.4 mph | 65% |
| 6 p.m. | 70°F | 43°F | 39% | 11.1 mph | 66% |
| 9 p.m. | 60°F | 44°F | 55% | 10.1 mph | 61% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024155. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for May in Pendleton?
The warmest May temperature on Pendleton's official record (since 1892) is 103°F, on May 29, 1897; the coldest is 24°F, on May 1, 1905. The wettest May brought 3.36 in (1906).
The May mean against the 1991-2020 normal of 57.9°F: 2021 58.2°F (+0.3), 2022 55.2°F (−2.7), 2023 63.1°F (+5.2), 2024 58.1°F (+0.2), 2025 59.8°F (+1.9), 2026 60.5°F (+2.6). 5 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 58.2°F | +0.3°F | 0.47 in |
| 2022 | 55.2°F | −2.7°F | 3.04 in |
| 2023 | 63.1°F | +5.2°F | 0.45 in |
| 2024 | 58.1°F | +0.2°F | 2.62 in |
| 2025 | 59.8°F | +1.9°F | 0.62 in |
| 2026 | 60.5°F | +2.6°F | 0.16 in |
Source: records: ACIS, NWS threaded record PDTthr; recent months: ACIS, station USW00024155. Records and recent months use complete months only.
How does May in Pendleton 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; Pendleton's is 71°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.