Astoria weather in May: Astoria, Oregon: normal highs, lows, rain and records for May
Astoria in May has a normal high of 61°F and a normal low of 46°F, a daily mean of 53°F, rising from 58°F on the 1st to 62°F by the 31st. Measurable precipitation falls on 16 days in a normal May, 3.40 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 16°C and low of 8°C, 86 mm of precipitation in May.
- NOAA stationAstoria Regional Airport
- Station IDUSW00094224
- Location46.16°N 123.88°W
- Elevation9 ft (3 m)
- Population9,906
- Jan 49° 38°
- Feb 51° 37°
- Mar 53° 39°
- Apr 56° 42°
- May 61° 46°
- Jun 64° 51°
- Jul 67° 54°
- Aug 69° 54°
- Sep 68° 51°
- Oct 61° 45°
- Nov 54° 40°
- Dec 49° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Astoria in May?
The normal high is 61°F and the normal low 46°F, for a daily mean of 53.4°F. May is 4.7°F warmer than April and 3.9°F cooler than June. May is the 5th warmest month of the year in Astoria and the 8th wettest. Across the month the normal high rises 4°F, from 58°F on May 1 to 62°F on May 31. From one year to the next May's mean temperature typically moves about 1.9°F either way (NOAA's standard deviation), so roughly two Mays in three average between 52°F and 55°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 57%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 58°F | 44°F | 57% | 36% |
| May 8 | 60°F | 45°F | 54% | 32% |
| May 15 | 61°F | 46°F | 51% | 30% |
| May 22 | 61°F | 47°F | 49% | 28% |
| May 31 | 62°F | 49°F | 48% | 26% |
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 | 44°F | 57% | 36% | 14 h 20 min |
| May 2 | 59°F | 44°F | 57% | 35% | 14 h 20 min |
| May 3 | 59°F | 44°F | 56% | 35% | 14 h 20 min |
| May 4 | 59°F | 44°F | 56% | 34% | 14 h 30 min |
| May 5 | 59°F | 44°F | 55% | 34% | 14 h 30 min |
| May 6 | 59°F | 45°F | 55% | 33% | 14 h 30 min |
| May 7 | 59°F | 45°F | 54% | 33% | 14 h 40 min |
| May 8 | 60°F | 45°F | 54% | 32% | 14 h 40 min |
| May 9 | 60°F | 45°F | 53% | 32% | 14 h 40 min |
| May 10 | 60°F | 45°F | 53% | 31% | 14 h 40 min |
| May 11 | 60°F | 45°F | 52% | 31% | 14 h 50 min |
| May 12 | 60°F | 46°F | 52% | 31% | 14 h 50 min |
| May 13 | 60°F | 46°F | 51% | 30% | 14 h 50 min |
| May 14 | 60°F | 46°F | 51% | 30% | 14 h 50 min |
| May 15 | 61°F | 46°F | 51% | 30% | 15 h |
| May 16 | 61°F | 46°F | 51% | 30% | 15 h |
| May 17 | 61°F | 47°F | 50% | 29% | 15 h |
| May 18 | 61°F | 47°F | 50% | 29% | 15 h |
| May 19 | 61°F | 47°F | 50% | 29% | 15 h 10 min |
| May 20 | 61°F | 47°F | 50% | 29% | 15 h 10 min |
| May 21 | 61°F | 47°F | 50% | 28% | 15 h 10 min |
| May 22 | 61°F | 47°F | 49% | 28% | 15 h 10 min |
| May 23 | 62°F | 48°F | 49% | 28% | 15 h 10 min |
| May 24 | 62°F | 48°F | 49% | 28% | 15 h 20 min |
| May 25 | 62°F | 48°F | 49% | 27% | 15 h 20 min |
| May 26 | 62°F | 48°F | 49% | 27% | 15 h 20 min |
| May 27 | 62°F | 48°F | 49% | 27% | 15 h 20 min |
| May 28 | 62°F | 48°F | 48% | 27% | 15 h 20 min |
| May 29 | 62°F | 49°F | 48% | 27% | 15 h 30 min |
| May 30 | 62°F | 49°F | 48% | 26% | 15 h 30 min |
| May 31 | 62°F | 49°F | 48% | 26% | 15 h 30 min |
- Normal high
- 61°FMay average
- Normal low
- 46°FMay average
- Precipitation
- 3.40 inmonth total
- Days with precipitation
- 160.01 inch or more
- Daylight
- 14 h 20 min to 15 h 30 minMay 1 to May 31
- Days at 70°F or more
- 3
- Days at 80°F or more
- 1
- Sunshine
- 66%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094224; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Astoria in May?
On a given May day the chance of 0.01 inch or more is 51% on average, highest around May 1 (57%). In all, 3.40 in falls on 16 days of a normal May.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094224.
How humid and windy is Astoria in May?
At 3 p.m. the normal temperature is 60°F with 69% relative humidity and a dew point of 50°F; at 6 a.m. it is 52°F with 90% humidity. The wind averages 7.6 mph, most often from the west in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 52°F | 49°F | 90% | 4.6 mph | – |
| 9 a.m. | 57°F | 50°F | 78% | 7.1 mph | – |
| noon | 60°F | 51°F | 70% | 10.7 mph | – |
| 3 p.m. | 60°F | 50°F | 69% | 12.0 mph | – |
| 6 p.m. | 58°F | 50°F | 74% | 10.2 mph | – |
| 9 p.m. | 54°F | 49°F | 84% | 6.1 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00094224. 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 Astoria?
The warmest May temperature on Astoria's official record (since 1887) is 93°F, on May 16, 2008; the coldest is 30°F, on May 1, 1954. The wettest May brought 8.52 in (1895).
The May mean against the 1991-2020 normal of 53.4°F: 2021 53.3°F (−0.1), 2022 51.2°F (−2.2), 2023 56.8°F (+3.4), 2024 54.4°F (+1.0), 2025 52.9°F (−0.5), 2026 55.1°F (+1.7). 3 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 53.3°F | −0.1°F | 1.16 in |
| 2022 | 51.2°F | −2.2°F | 6.24 in |
| 2023 | 56.8°F | +3.4°F | 1.17 in |
| 2024 | 54.4°F | +1.0°F | 4.08 in |
| 2025 | 52.9°F | −0.5°F | 2.23 in |
| 2026 | 55.1°F | +1.7°F | 2.17 in |
Source: records: ACIS, NWS threaded record ASTthr; recent months: ACIS, station USW00094224. Records and recent months use complete months only.
How does May in Astoria 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; Astoria's is 61°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.