Spokane weather in May: Spokane, Washington: normal highs, lows, rain and records for May
Spokane in May has a normal high of 67°F and a normal low of 45°F, a daily mean of 56°F, rising from 62°F on the 1st to 71°F by the 31st. Measurable precipitation falls on 10 days in a normal May, 1.55 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 7°C, 39 mm of precipitation and 0 cm of snow in May.
- NOAA stationSpokane International Airport
- Station IDUSW00024157
- Location47.62°N 117.53°W
- Elevation2,353 ft (717 m)
- From the center5 miles
- Population230,609
- Jan 35° 25°
- Feb 40° 26°
- Mar 49° 32°
- Apr 57° 37°
- May 67° 45°
- Jun 74° 51°
- Jul 84° 58°
- Aug 84° 57°
- Sep 74° 49°
- Oct 58° 38°
- Nov 42° 30°
- Dec 34° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Spokane in May?
The normal high is 67°F and the normal low 45°F, for a daily mean of 56.0°F. May is 9.0°F warmer than April and 6.3°F cooler than June. May is the 5th warmest month of the year in Spokane and the 5th wettest. Across the month the normal high rises 9°F, from 62°F on May 1 to 71°F on May 31. From one year to the next May's mean temperature typically moves about 3.0°F either way (NOAA's standard deviation), so roughly two Mays in three average between 53°F and 59°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 32%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 62°F | 41°F | 31% | 12% |
| May 8 | 65°F | 43°F | 31% | 12% |
| May 15 | 67°F | 45°F | 31% | 13% |
| May 22 | 69°F | 47°F | 32% | 13% |
| May 31 | 71°F | 49°F | 31% | 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 | 62°F | 41°F | 31% | 12% | 14 h 30 min |
| May 2 | 63°F | 41°F | 31% | 12% | 14 h 30 min |
| May 3 | 63°F | 41°F | 31% | 12% | 14 h 30 min |
| May 4 | 64°F | 41°F | 31% | 12% | 14 h 30 min |
| May 5 | 64°F | 42°F | 31% | 12% | 14 h 40 min |
| May 6 | 64°F | 42°F | 31% | 12% | 14 h 40 min |
| May 7 | 65°F | 42°F | 31% | 12% | 14 h 40 min |
| May 8 | 65°F | 43°F | 31% | 12% | 14 h 50 min |
| May 9 | 65°F | 43°F | 31% | 12% | 14 h 50 min |
| May 10 | 66°F | 43°F | 31% | 12% | 14 h 50 min |
| May 11 | 66°F | 44°F | 31% | 13% | 14 h 50 min |
| May 12 | 66°F | 44°F | 31% | 13% | 15 h |
| May 13 | 67°F | 44°F | 31% | 13% | 15 h |
| May 14 | 67°F | 45°F | 31% | 13% | 15 h |
| May 15 | 67°F | 45°F | 31% | 13% | 15 h 10 min |
| May 16 | 68°F | 45°F | 31% | 13% | 15 h 10 min |
| May 17 | 68°F | 46°F | 31% | 13% | 15 h 10 min |
| May 18 | 68°F | 46°F | 32% | 13% | 15 h 10 min |
| May 19 | 68°F | 46°F | 32% | 13% | 15 h 20 min |
| May 20 | 69°F | 46°F | 32% | 13% | 15 h 20 min |
| May 21 | 69°F | 47°F | 32% | 13% | 15 h 20 min |
| May 22 | 69°F | 47°F | 32% | 13% | 15 h 20 min |
| May 23 | 69°F | 47°F | 31% | 13% | 15 h 20 min |
| May 24 | 69°F | 47°F | 31% | 13% | 15 h 30 min |
| May 25 | 70°F | 47°F | 31% | 13% | 15 h 30 min |
| May 26 | 70°F | 48°F | 31% | 13% | 15 h 30 min |
| May 27 | 70°F | 48°F | 31% | 13% | 15 h 30 min |
| May 28 | 70°F | 48°F | 31% | 13% | 15 h 30 min |
| May 29 | 70°F | 48°F | 31% | 13% | 15 h 40 min |
| May 30 | 70°F | 48°F | 31% | 13% | 15 h 40 min |
| May 31 | 71°F | 49°F | 31% | 13% | 15 h 40 min |
- Normal high
- 67°FMay average
- Normal low
- 45°FMay average
- Precipitation
- 1.55 inmonth total
- Days with precipitation
- 100.01 inch or more
- Snowfall
- 0.1 inmonth total
- Nights at 32°F or colder
- 2
- Daylight
- 14 h 30 min to 15 h 40 minMay 1 to May 31
- Days at 70°F or more
- 12
- Days at 80°F or more
- 4
- Sunshine
- 74%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024157; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Spokane in May?
On a given May day the chance of 0.01 inch or more is 31% on average, highest around May 20 (32%). In all, 1.55 in falls on 10 days of a normal May.
In a normal May in Spokane, 2 nights fall to freezing and snowfall averages 0.1 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024157.
How humid and windy is Spokane in May?
At 3 p.m. the normal temperature is 69°F with 35% relative humidity and a dew point of 40°F; at 6 a.m. it is 52°F with 70% humidity. The wind averages 9.0 mph, most often from the southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 52°F | 43°F | 70% | 8.7 mph | 27% |
| 9 a.m. | 60°F | 43°F | 53% | 9.8 mph | 24% |
| noon | 67°F | 41°F | 40% | 10.4 mph | 15% |
| 3 p.m. | 69°F | 40°F | 35% | 10.7 mph | – |
| 6 p.m. | 67°F | 40°F | 37% | 9.8 mph | 21% |
| 9 p.m. | 59°F | 42°F | 53% | 7.6 mph | 35% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024157. 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 Spokane?
The warmest May temperature on Spokane's official record (since 1881) is 97°F, on May 25, 1928; the coldest is 24°F, on May 1, 1954. The wettest May brought 5.71 in (1948); the snowiest, 3.5 inches (1967).
The May mean against the 1991-2020 normal of 56.0°F: 2021 56.5°F (+0.5), 2022 51.1°F (−4.9), 2023 63.5°F (+7.5), 2024 56.9°F (+0.9), 2025 56.9°F (+0.9), 2026 59.1°F (+3.1). 5 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 56.5°F | +0.5°F | 0.20 in |
| 2022 | 51.1°F | −4.9°F | 1.50 in |
| 2023 | 63.5°F | +7.5°F | 1.35 in |
| 2024 | 56.9°F | +0.9°F | 0.83 in |
| 2025 | 56.9°F | +0.9°F | 0.94 in |
| 2026 | 59.1°F | +3.1°F | 1.49 in |
Source: records: ACIS, NWS threaded record GEGthr; recent months: ACIS, station USW00024157. Records and recent months use complete months only.
How does May in Spokane compare across Washington?
Across the 96 places PlainClimate covers in Washington, May normal highs run from 59°F in Long Beach to 77°F in Pasco; Spokane's is 67°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.