Weather in Airway Heights, Washington
High country wildflowers peak. Day 59 of spring. Read this microseason across nine climate regions →
- TodayMay 16Snow32%47°38°
- SundayMay 17Light Drizzle—59°37°
- MondayMay 18Overcast—65°40°
- TuesdayMay 19Light Drizzle—63°42°
- WednesdayMay 20Overcast—67°42°
- ThursdayMay 21Overcast—73°46°
- FridayMay 22Overcast—74°50°
- PM 2.5
- 0.9 μg/m³
- PM 10
- 1.1 μg/m³
- NO₂
- 1.0 μg/m³
- Ozone
- 89.0 μg/m³
- UV Index
- 0.9 Low
When the dew is on the grass, rain will never come to pass.
- Moonrise
- 12:08 PM
- Moonset
- 4:09 AM
- In sign
- ♉︎ Taurus
High country wildflowers peak
Airway Heights at a glance
- Today vs. normal: 17°F below the seasonal normal for this latitude
- Last frost: June 1 (climatological average for this latitude)
- Microseason: 28 of 72, May 16–20
- Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.
Right now in the garden
Cool-season window is open
As of May 17, the cool-season window is open or about to open. Direct-sow peas, lettuce, spinach, radishes, and brassicas now. Hold off on warm-season crops until 1–2 weeks after the last spring frost (around May).
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | — | — |
| May | lettuce, peas, spinach, radishes | lettuce, peas, radishes |
| June | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | tomatoes, peppers, beans, squash, fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | — | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
Airway Heights's warmest month is July (~72°F mean) and its coldest is December (~31°F). Rainfall peaks in December (2.2 inches) and bottoms out in August (0.5 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 32° | 2.0″ | 7 |
| February | 35° | 1.3″ | 5 |
| March | 42° | 1.8″ | 7 |
| April | 48° | 1.5″ | 4 |
| May | 57° | 1.7″ | 5 |
| June | 63° | 1.5″ | 5 |
| July | 72° | 0.7″ | 1 |
| August | 70° | 0.5″ | 2 |
| September | 61° | 0.7″ | 2 |
| October | 49° | 1.5″ | 5 |
| November | 38° | 2.0″ | 7 |
| December | 31° | 2.2″ | 8 |
Regional context
Airway Heights sits within a warm-summer Mediterranean climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Seattle, WA, Spokane, WA, Kennewick, WA, Bremerton, WA, Tacoma, WA.
Frequently asked
- When does it freeze in Airway Heights?
- Airway Heights's last spring frost typically falls around mid-May, and the first fall frost arrives around mid-October.
- What is the rainy season in Airway Heights?
- December is the wettest month with about 2.2 inches of rain on average; the city receives roughly 17 inches annually.
- What is the warmest month in Airway Heights?
- July is typically warmest, averaging about 72°F.
- What is the coldest month in Airway Heights?
- December is typically coldest, averaging about 31°F.
- When can I start a vegetable garden in Airway Heights?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-May); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Airway Heights get?
- Airway Heights averages about 56 rainy days per year.
- What hardiness zone is Airway Heights?
- Airway Heights's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Airway Heights, Washington sits in a warm-summer Mediterranean climate zone. January means hover near 32°F while July averages 72°F — a 40°F seasonal swing.
Across the year, Airway Heights receives about 17 inches of precipitation spread over roughly 56 rainy days.
The rhythm of the year is set by latitude (47.6°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.