Spokane, Washington climate: Normal weather by month, frost dates and records
Spokane's normal year runs from 24°F December nights to 84°F July afternoons, with 16.4 inches of precipitation and 45 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.2°C, December lows of −4°C, July highs of 29°C, 418 mm of precipitation a year.
- NOAA stationSpokane International Airport
- Station IDUSW00024157
- Location47.62°N 117.53°W
- Elevation2,353 ft (717 m)
- From the center5 miles
- Population230,609
On October 23, the normal high in Spokane is 54°F and the normal low 36°F, and the chance of measurable rain or snow is 32%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Spokane.
- 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.
What is the weather like in Spokane each month?
July is the warmest month, with normal highs of 84°F; December the coldest, with normal lows of 24°F. The most precipitation falls in December (2.34 in), the least in July (0.42 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 35°F | 25°F | 29.6°F | 1.97 | 12.3 | 14 | <1 | 26 | 8 h 50 min |
| February | 40°F | 26°F | 32.9°F | 1.44 | 7.8 | 11 | <1 | 23 | 10 h 10 min |
| March | 49°F | 32°F | 40.0°F | 1.83 | 3.9 | 12 | <1 | 19 | 11 h 50 min |
| April | 57°F | 37°F | 47.0°F | 1.25 | 0.7 | 10 | <1 | 8 | 13 h 30 min |
| May | 67°F | 45°F | 56.0°F | 1.55 | 0.1 | 10 | <1 | 2 | 15 h 10 min |
| June | 74°F | 51°F | 62.3°F | 1.17 | 0.0 | 8 | 2 | <1 | 16 h |
| July | 84°F | 58°F | 71.0°F | 0.42 | 0.0 | 4 | 9 | <1 | 15 h 40 min |
| August | 84°F | 57°F | 70.3°F | 0.47 | 0.0 | 3 | 8 | <1 | 14 h 20 min |
| September | 74°F | 49°F | 61.1°F | 0.58 | 0.1 | 5 | 1 | <1 | 12 h 40 min |
| October | 58°F | 38°F | 47.9°F | 1.37 | 0.5 | 9 | <1 | 8 | 11 h |
| November | 42°F | 30°F | 36.3°F | 2.06 | 6.2 | 13 | <1 | 19 | 9 h 20 min |
| December | 34°F | 24°F | 29.1°F | 2.34 | 13.8 | 14 | <1 | 27 | 8 h 30 min |
| Year (annual) | 58°F | 39°F | 48.6°F | 16.45 | 45.4 | 113 | 21 | 132 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 1°C | −4°C | −1.3°C | 50 mm | 31 cm |
| February | 4°C | −3°C | 0.5°C | 37 mm | 20 cm |
| March | 9°C | 0°C | 4.4°C | 46 mm | 10 cm |
| April | 14°C | 3°C | 8.3°C | 32 mm | 2 cm |
| May | 19°C | 7°C | 13.3°C | 39 mm | 0 cm |
| June | 23°C | 10°C | 16.8°C | 30 mm | 0 cm |
| July | 29°C | 14°C | 21.7°C | 11 mm | 0 cm |
| August | 29°C | 14°C | 21.3°C | 12 mm | 0 cm |
| September | 23°C | 9°C | 16.2°C | 15 mm | 0 cm |
| October | 14°C | 3°C | 8.8°C | 35 mm | 1 cm |
| November | 6°C | −1°C | 2.4°C | 52 mm | 16 cm |
| December | 1°C | −4°C | −1.6°C | 59 mm | 35 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00024157; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Spokane?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, August has the fewest days with rain (3).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00024157.
When is the last frost in Spokane?
In Spokane, the last spring frost (32°F) comes after April 26 in half of years and after May 10 in one year in ten; the first autumn frost comes before October 12 in half of years and before September 29 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 261 year in 10 after May 10; 9 in 10 after April 9
- First autumn frost, half of years before
- October 121 year in 10 before September 29; 9 in 10 before October 28
NOAA puts the median frost-free season at 168 days, and the season without a hard freeze (28°F) at 200 days.
A hard freeze (28°F) comes after April 6 in half of springs and before October 23 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Spokane in zones 6b to 7a across its 10 ZIP code areas (6b in 99224, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Spokane's NOAA station is in zone 6b: the coldest night of a typical year reaches −3°F (30 complete years).
Frost dates for every NOAA station in Washington · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00024157; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
What hardiness zone is each Spokane ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Spokane's 10 ZIP code areas run from zone 6b to 7a: 5 in 6b and 5 in 7a. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Spokane?
In a normal year in Spokane, 21 days a year reach 90°F (1 of them 100°F or more), 132 nights fall to 32°F or colder and 113 days bring measurable precipitation.
- Days at 90°F or more
- 21a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 132a normal year
- Days that stay below freezing
- 34high of 32°F or less
- Days with 0.01 inch of precipitation
- 113a normal year
- Days with 1 inch of snow or more
- 15a normal year
The highest temperature in Spokane's official record (kept by the National Weather Service since 1881) is 109°F, on June 29, 2021; the lowest is −30°F, on January 16, 1888.
The wettest calendar year on that record is 1948, with 26.07 in; the snowiest season is 2008–09, with 97.7 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00024157; records: ACIS (NOAA Regional Climate Centers), NWS threaded record GEGthr. Records use complete months only; a month missing more than three days is left out.
How humid and windy is Spokane, and how clear are its skies?
The summer (June-August) dew point averages 43°F. The muggiest month is June, with an average dew point of 45°F; the driest air comes in December (24°F). April is the windiest month (9.9 mph on average), and July has the most clear or nearly clear hours (60%).
| Month | Dew point | Humidity | Afternoon humidity | Wind | Clear or few clouds | Overcast |
|---|---|---|---|---|---|---|
| January | 27°F | 84% | 74% | 8.0 mph | 14% | 59% |
| February | 26°F | 73% | 57% | 8.7 mph | 26% | 42% |
| March | 31°F | 65% | 45% | 9.8 mph | 28% | 34% |
| April | 34°F | 54% | 36% | 9.9 mph | 30% | 25% |
| May | 42°F | 53% | 35% | 9.0 mph | 28% | 25% |
| June | 45°F | 47% | 28% | 8.6 mph | 39% | 13% |
| July | 44°F | 37% | 21% | 8.0 mph | 60% | 5% |
| August | 41°F | 43% | 25% | 7.9 mph | 49% | 9% |
| September | 38°F | 53% | 33% | 7.8 mph | 50% | 16% |
| October | 32°F | 75% | 58% | 7.9 mph | 26% | 41% |
| November | 26°F | 84% | 76% | 8.1 mph | 16% | 57% |
| December | 24°F | 87% | 81% | 7.9 mph | 13% | 64% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024157. Monthly averages of all hours; afternoon humidity at 3 p.m. local standard time; sky as the share of hours NOAA's observations rate clear or few clouds (a dash where NOAA publishes no sky value).
How sunny is Spokane?
Over a year 74% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Spokane, 3.8 kWh per square metre a day. July is the sunniest month (90%) and December the cloudiest (50%). Among the 459 U.S. places of 50,000 or more, that ranks tied 330th (with 21 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 53% | 1.1 |
| February | 62% | 2.0 |
| March | 61% | 3.1 |
| April | 67% | 4.6 |
| May | 74% | 5.9 |
| June | 75% | 6.5 |
| July | 90% | 7.4 |
| August | 88% | 6.1 |
| September | 81% | 4.4 |
| October | 71% | 2.6 |
| November | 56% | 1.3 |
| December | 50% | 0.9 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Spokane need?
A normal year in Spokane brings 6,463 heating degree days, 20% more than the median U.S. place (5,373), and 515 cooling degree days, 43% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,313 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,097 | 0 |
| February | 899 | 0 |
| March | 774 | 0 |
| April | 542 | 0 |
| May | 294 | 15 |
| June | 134 | 52 |
| July | 26 | 212 |
| August | 28 | 190 |
| September | 162 | 45 |
| October | 532 | 1 |
| November | 861 | 0 |
| December | 1,114 | 0 |
| Year (annual) | 6,463 | 515 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00024157. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Spokane been warmer than normal lately?
2025 averaged 51.4°F, 2.8°F above the 1991-2020 normal of 48.6°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 50.6°F | +2.0°F | 11.50 | 35.0 |
| 2022 | 48.4°F | −0.2°F | 17.72 | 54.5 |
| 2023 | 50.6°F | +2.0°F | 13.75 | 40.6 |
| 2024 | 51.4°F | +2.8°F | 16.69 | 25.6 |
| 2025 | 51.4°F | +2.8°F | 14.88 | 27.3 |
Over 126 complete years from 1885 to 2025, the station's annual mean temperature rose at a fitted 1.4°F per century (+0.08°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00024157; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Spokane's climate compare?
Spokane is warmer than 19 of the other 95 places with their own NOAA record in Washington, and wetter than 30. Across the 7,247 U.S. stations with normals, its annual mean of 48.6°F is warmer than 34%.
In the Köppen classification computed from these normals, Spokane is Dsb: continental, dry-summer, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Spokane share this climate record?
10 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Cheney, WA12,700 people · 9 mi S
- Airway Heights, WA11,950 people · 3 mi NW
- Fairwood, WA10,439 people · 11 mi NE
- Mead, WA7,184 people · 14 mi NE
- Country Homes, WA5,979 people · 10 mi NE
- Town and Country, WA5,398 people · 9 mi NE
- Medical Lake, WA5,003 people · 8 mi SW
- Fairchild AFB, WA3,016 people · 6 mi W
- Millwood, WA1,841 people · 12 mi E
- Four Lakes, WA489 people · 5 mi SW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Spokane's other NOAA stations record?
3 more NOAA stations keep 1991-2020 normals in or near Spokane. This page uses Spokane International Airport; the others differ by site and elevation:
| Station | From the center | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Spokane (17 mi SSW) USW00004136 | 18 mi S | 2,267 ft | 45.0°F | 22°F | 84°F | 18.3 | – | May 30 |
| Spokane Felts Field USW00094176 | 5 mi E | 1,953 ft | 49.8°F | 26°F | 87°F | 17.4 | – | April 26 |
| Spokane Weather Office USC00457941 | 9 mi W | 2,392 ft | 46.3°F | 23°F | 83°F | 17.4 | 48 | May 10 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Spokane's climate
What is the coldest month in Spokane?
December, with a normal high of 34°F and a normal low of 24°F. The warmest is July (84°F by day, 58°F at night).
Does it snow in Spokane?
Yes: 45 inches in a normal year, falling on 35 days with 0.1 inch or more, the most in December (13.8 inches).
What is the rainiest month in Spokane?
December, with 2.34 in of precipitation in a normal year; the driest is July with 0.42 in.
What plant hardiness zone is Spokane in?
The USDA's 2023 map puts Spokane in zones 6b to 7a across its 10 ZIP code areas (6b in 99224, the largest). By the same method at Spokane's NOAA station, the coldest night of a typical year reaches −3°F (30 years, 1991-2020): zone 6b.
How late can frost come in Spokane?
In half of years the last 32°F night comes after April 26; in one year in ten it comes after May 10. Waiting until May 10 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Spokane in OctoberThis month day by day, its records and recent years
- Washington climateThe statewide normals and every place in the state
- Deer Park, WA25 miles from this station, 45.5°F a year
- Rosalia, WA28 miles from this station, 48.1°F a year
- Davenport, WA30 miles from this station, 44.5°F a year
- Coeur d'Alene, ID34 miles from this station, 48.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made