Coulee Dam, Washington Weather
Thunderheads build by noon. Day 90 of spring. Read this microseason across nine climate regions →
Coulee Dam weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 16Overcast——89°68°—
- WednesdayJun 17Mostly Clear——84°62°-5°
- ThursdayJun 18Overcast——86°62°+2°
- FridayJun 19Overcast——90°60°+4°
- SaturdayJun 20Clear——87°60°-3°
- SundayJun 21Partly Cloudy——89°57°+2°
- MondayJun 22Overcast——94°61°+5°
AQI 44 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 43 now. With UV 0.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 10 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 43 now. With UV 0.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 10 around 1 PM.
- Present
- AQI 43
- UV peak
- 0.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 10
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 7:32 AM
- Moonset
- 11:09 PM
- In sign
- ♋︎ Cancer
Thunderheads build by noon
Coulee Dam at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: June 3 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Coulee Dam
- Tue89°68°1%
- Wed84°61°1%
- Thu86°62°0%
- Fri90°60°0%
- Sat87°60°0%
- Sun89°57°1%
- Mon94°61°0%
- Tue97°65°1%
- Wed81°60°2%
- Thu73°47°3%
- Fri79°47°3%
- Sat86°54°3%
- Sun90°58°6%
- Mon94°63°7%
- Tue99°66°13%
- Wed104°68°13%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Warm-season window is open
As of June 17, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
ZIP codes in Coulee Dam
- 99116