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Spokane Valley, WA Weather on May 15
May 15th in Spokane Valley, WA typically brings mild spring weather, with average highs around 69°F and lows near 44°F — a 25°F daily swing. Over 55 years of records, the warmest May 15th was in 2023 (71°F average), while the coldest was 1974 (38°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 25% of May 15th dates historically, with the wettest May 15th recording 1.63" of rain. The last decade has been 4.1°F warmer on this date compared to 20-30 years ago.
What to Expect on May 15
Planning for May 15th in Spokane Valley, WA? Great weather for outdoor activities.
May 15 Weather Records for Spokane Valley
- •The all-time record high for May 15th in Spokane Valley, WA is 91°F, set in 2006.
- •The coldest May 15th on record dropped to 31°F in 1974.
- •Temperatures have reached 90°F or higher on May 15th in 1 of the last 55 years.
- •A freeze (32°F or below) has occurred on May 15th in 2 of the last 55 years.
- •Last year (1971), May 15th was 6°F cooler than the long-term average.
Frequently Asked Questions
What was the warmest May 15 ever in Spokane Valley?
The warmest May 15 in Spokane Valley, WA reached 91°F in 2006. That is 22°F above the long-term average high of 69°F.
What was the coldest May 15 ever in Spokane Valley?
The coldest May 15 in Spokane Valley, WA dropped to 31°F in 1974. That is 13°F below the long-term average low of 44°F.
What is the average temperature on May 15 in Spokane Valley?
On May 15, Spokane Valley averages a high of 69°F and a low of 44°F based on 55 years of NOAA weather observations from SPOKANE FELTS FLD.
How many years of weather data are available for May 15 in Spokane Valley?
We have 55 years of weather records for May 15 in Spokane Valley, WA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
May 15 Weather History in Spokane Valley
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 66°F | 46°F | 0" | -- |
| 2024 | 79°F | 48°F | 0" | -- |
| 2023 | 84°F | 57°F | 0.13" | -- |
| 2022 | 70°F | 42°F | 0" | -- |
| 2021 | 82°F | 45°F | 0" | -- |
| 2020 | 64°F | 45°F | 0.08" | -- |
| 2019 | 71°F | 47°F | 0" | -- |
| 2018 | 87°F | 50°F | 0" | -- |
| 2017 | 60°F | 35°F | 0" | -- |
| 2016 | 59°F | 52°F | 0.13" | -- |
| 2015 | 73°F | 45°F | 0" | -- |
| 2014 | 83°F | 48°F | 0" | -- |
| 2013 | 67°F | 39°F | 0" | -- |
| 2012 | 88°F | 47°F | 0" | -- |
| 2011 | 69°F | 48°F | 1.63" | -- |
| 2010 | 80°F | 43°F | 0" | -- |
| 2009 | 65°F | 35°F | 0" | -- |
| 2008 | 80°F | 42°F | 0" | -- |
| 2007 | 80°F | 42°F | 0" | -- |
| 2006 | 91°F | 45°F | 0" | -- |
| 2005 | 68°F | 51°F | 1.22" | -- |
| 2004 | 70°F | 40°F | 0" | -- |
| 2003 | 59°F | 41°F | 0" | -- |
| 2002 | 64°F | 35°F | 0" | -- |
| 2001 | 63°F | 46°F | 0.43" | -- |
| 2000 | 75°F | 45°F | 0" | -- |
| 1999 | 60°F | 40°F | 0" | -- |
| 1998 | 59°F | 38°F | 0" | -- |
| 1997 | 83°F | 56°F | 0" | -- |
| 1996 | 62°F | 51°F | 1.22" | -- |
| 1995 | 74°F | 51°F | 0" | -- |
| 1994 | 58°F | 42°F | 1.32" | -- |
| 1993 | 81°F | 47°F | 0" | -- |
| 1992 | 72°F | 45°F | 0" | -- |
| 1991 | 65°F | 37°F | 0" | -- |
| 1990 | 63°F | 39°F | 0" | -- |
| 1989 | 73°F | 39°F | 0" | -- |
| 1988 | 77°F | 41°F | 0" | -- |
| 1987 | 75°F | 50°F | 0" | -- |
| 1986 | 60°F | 32°F | 0" | -- |
| 1985 | 77°F | 37°F | 0" | -- |
| 1984 | 49°F | 43°F | 0.43" | -- |
| 1983 | 57°F | 44°F | -- | -- |
| 1982 | 60°F | 50°F | -- | -- |
| 1981 | 53°F | 42°F | 1.55" | -- |
| 1980 | 52°F | 46°F | 0.94" | -- |
| 1979 | 73°F | 43°F | 0" | -- |
| 1978 | 57°F | 47°F | 0.38" | -- |
| 1977 | 57°F | 37°F | 0" | -- |
| 1976 | 70°F | 41°F | 0" | -- |
| 1975 | 77°F | 53°F | 0.03" | -- |
| 1974 | 45°F | 31°F | 0.48" | -- |
| 1973 | 89°F | 52°F | 0" | -- |
| 1972 | 69°F | 51°F | 0" | -- |
| 1971 | 63°F | 46°F | 0" | -- |
Based on 55 years of data from NOAA station: SPOKANE FELTS FLD
Monthly Climate Averages
Historical temperature and precipitation averages for Spokane Valley, WA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.