Des Moines, Washington Weather
Fireweed Ignites. Day 14 of summer. Read this microseason across nine climate regions →
Des Moines weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——71°56°—
- SundayJul 5Overcast——73°54°+2°
- MondayJul 6Overcast——85°52°+12°
- TuesdayJul 7Overcast——85°52°0°
- WednesdayJul 8Light Drizzle—0.01″70°58°-15°
- ThursdayJul 9Overcast——79°51°+9°
- FridayJul 10Clear——85°52°+6°
AQI 22 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:17 PM
- Moonset
- 10:12 AM
- In sign
- ♓︎ Pisces
Fireweed Ignites
Des Moines at a glance
- Today vs. normal: 3°F below the seasonal normal for this latitude
- Last frost: May 30 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Des Moines
- Sat71°56°3%
- Sun73°54°0%
- Mon85°52°0%
- Tue85°52°1%
- Wed70°58°8%
- Thu79°51°8%
- Fri85°52°3%
- Sat88°55°9%
- Sun91°62°5%
- Mon94°60°5%
- Tue88°58°5%
- Wed79°54°3%
- Thu93°56°0%
- Fri95°62°3%
- Sat99°63°0%
- Sun93°65°0%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
Microseason · July 1–5
Fireweed Ignites
Magenta fireweed spires surge from burned and cleared slopes, their blooms climbing from base upward. July's signature color claims the disturbed ground.
Day 185 of 365 · Wedge 37 of 72
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
In Des Moines, August runs warmest near 67°F and January coldest around 38°F, while November is the wettest month (7.9 inches) and July the driest (0.5 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 38° | 7.5″ | 23 |
| February | 40° | 5.5″ | 20 |
| March | 43° | 5.6″ | 23 |
| April | 48° | 4.1″ | 20 |
| May | 55° | 3.1″ | 19 |
| June | 60° | 2.4″ | 16 |
| July | 66° | 0.5″ | 7 |
| August | 67° | 0.9″ | 6 |
| September | 60° | 2.4″ | 12 |
| October | 51° | 6.2″ | 19 |
| November | 44° | 7.9″ | 23 |
| December | 38° | 7.5″ | 24 |
Regional context
By the nearest station's NOAA NCEI 1991-2020 normals, Des Moines sees 38°F Januarys and 66°F Julys, a 28°F range, plus around 53.6 inches of precipitation across 211 days.
Precipitation in Des Moines peaks in the cool season: November averages 7.9 inches across 22.6 storm-fed days, while July bottoms out at 0.5 inches over just 6.8 rainy days. It is a winter-storm rhythm Des Moines shares with places like Normandy Park, WA, SeaTac, WA and Lakeland North, WA.
By late-May the frosts ease in Des Moines, opening the season for peas, lettuce, spinach, and radishes. Warm-soil crops in Des Moines wait about two weeks past Des Moines's last frost, once the soil warms. Around early-October, freezing nights resume in Des Moines and tender crops must come in. Within Des Moines, cold-air pooling chills low spots by 5-10°F, shifting Des Moines's local frost dates.
Similar climates: Normandy Park, WA, SeaTac, WA, Lakeland North, WA, Kent, WA, Federal Way, WA.
Frequently asked
- When does it freeze in Des Moines?
- Frost typically leaves Des Moines by mid-May and returns to Des Moines near mid-October.
- What is the rainy season in Des Moines?
- Rainfall in Des Moines peaks in November near 7.9 inches, out of about 54 inches annually.
- What is the warmest month in Des Moines?
- Des Moines peaks in August, when the mean runs near 67°F.
- What is the coldest month in Des Moines?
- January is Des Moines's coldest month, averaging about 38°F.
- When can I start a vegetable garden in Des Moines?
- In Des Moines, sow peas and hardy greens around mid-May; Des Moines's tomatoes and peppers wait two weeks more.
- How many rainy days does Des Moines get?
- Expect roughly 211 wet days a year in Des Moines.
- What hardiness zone is Des Moines?
- Because Des Moines bottoms near 38°F in January, that winter low sets Des Moines's USDA zone — verify by ZIP.
- What is the 10-day forecast for Des Moines?
- Des Moines's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Des Moines?
- See this week's day-by-day rain chances for Des Moines in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Des Moines?
- Current conditions for Des Moines and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Des Moines forecast updated?
- The Des Moines forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Des Moines?
- Today's sunrise and sunset times for Des Moines are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Des Moines?
- The next few days in Des Moines's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Set in a warm-summer Mediterranean zone, Des Moines, Washington swings from 38°F in the heart of winter to 66°F at midsummer — a 28°F arc.
In a typical year Des Moines records about 54 inches of precipitation on around 211 days.
Des Moines's 28°F range, set by its 47.4°N position, drives frost timing and what thrives in Des Moines.
ZIP codes in Des Moines
- 98148
- 98198