Astoria (OR)
May
Weather in Astoria, Oregon for May 2026
Your guide to Astoria weather in May - trends and predictions
Heat Advisory - See hour by hour.
The forecast for the next days in Astoria predicts temperatures to be around 15 °F, close to the historical average.
In general, the average temperature in Astoria at the beginning of May is 15.9 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 13.6 °F by the end of May.
Astoria in May brings notable rainfall, with an average of 18 rainy days and a total precipitation of 97.1 mm.
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13
Dry days
18
Rainy days
0
Snow days
12°/8°
Temperatures
18 km/h
Avg max wind
83 %
Avg humidity
Astoria Weather May
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Temperatures trend during May in Astoria
See the weather trend as well as the moving average line
May weather in Astoria day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 |  Patchy rain possible | 14° /7° | 0.3 mm | 5 | |
| May 2 | Patchy rain possible | 13° /7° | 1 mm | 4 | |
| May 3 |  Sunny | 26° /12° | 0 mm | 6.3 | |
| May 4 |  Partly cloudy | 15° /11° | 0 mm | 6.5 | |
| May 5 | Partly cloudy | 15° /9° | 0.1 mm | 6.8 | |
| May 6 | Partly cloudy | 14° /8° | 0 mm | 6.8 | |
| May 7 | Partly cloudy | 14° /8° | 0 mm | 0 | |
| May 8 |  Overcast | 13° /8° | 0 mm | 3 | |
| May 9 | Sunny | 15° /6° | 0 mm | 4 | |
| May 10 | Sunny | 16° /8° | 0 mm | 4 | |
| May 11 | Partly cloudy | 15° /9° | 0 mm | 4 | |
| May 12 | Partly cloudy | 14° /8° | 0.1 mm | 4 | |
| May 13 | Sunny | 15° /7° | 0 mm | 4 | |
| May 14 | Partly cloudy | 15° /9° | 0 mm | 4 | |
| May 15 | Patchy rain possible | 13° /9° | 0.8 mm | 3 | |
| May 16 | Patchy rain possible | 11° /8° | 0.8 mm | 2 | |
| May 17 | Patchy rain possible | 11° /8° | 3.9 mm | 3 | |
| May 18 | Light rain shower | 10° /7° | 1.5 mm | 3 | |
| May 19 | Light rain shower | 12° /8° | 11.9 mm | 3 | |
| May 20 | Patchy rain possible | 11° /8° | 9.6 mm | 3 | |
| May 21 | Light rain shower | 11° /8° | 10.1 mm | 3 | |
| May 22 | Light rain shower | 11° /8° | 2 mm | 3 | |
| May 23 | Patchy rain possible | 11° /8° | 0.3 mm | 3 | |
| May 24 | Patchy rain possible | 11° /7° | 0.4 mm | 3 | |
| May 25 | Light rain shower | 11° /8° | 1.8 mm | 3 | |
| May 26 | Light rain shower | 12° /9° | 1.1 mm | 3 | |
| May 27 | Partly cloudy | 16° /9° | 0 mm | 5 | |
| May 28 | Light rain shower | 14° /9° | 2.8 mm | 4 | |
| May 29 | Patchy rain possible | 13° /9° | 5.8 mm | 3 | |
| May 30 | Patchy rain possible | 15° /8° | 0.1 mm | 4 | |
| May 31 | Sunny | 14° /9° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Astoria in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Astoria forecast closer to your planned date for the most up-to-date weather information.
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Astoria in May - FAQ
What are the expected maximum and minimum temperatures in Astoria during May?
During May, expect a variety of temperatures with highs around 12° and lows near 8°, suitable for diverse activities and preferences.
How much rainfall should be expected in Astoria during May?
Moderate rainfall is anticipated in Astoria during May, with a total of 97.1 mm spread over approximately 18 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Astoria during May?
The average wind speed in Astoria during May is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Astoria
Explore the daily rainfall trends and prepare for Astorias May weather 💧
Typically, Astoria has 18 rainy days in May with a total of 97.1 mm of rainfall.
UV exposure in Astoria during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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