Issaquah, Washington Weather
Rufous Hummingbirds Arrive. Day 77 of spring. Read this microseason across nine climate regions →
Issaquah weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast14%—68°53°—
- FridayJun 5Drizzle57%0.03″59°47°-9°
- SaturdayJun 6Light Showers91%0.11″56°44°-3°
- SundayJun 7Light Drizzle—0.01″66°46°+10°
- MondayJun 8Heavy Drizzle57%0.20″65°49°-1°
- TuesdayJun 9Heavy Drizzle58%0.35″54°49°-11°
- WednesdayJun 10Overcast38%—65°49°+11°
AQI 26 (Good), driven by Ozone. AQI down 10 over the last 6 hours (steady decline since this morning).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 12 PM.
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
- 7:08 AM
- Moonset
- 3:49 PM
- In sign
- ♑︎ Capricorn
Rufous Hummingbirds Arrive
Issaquah at a glance
- Today vs. normal: 11°F below the seasonal normal for this latitude
- Last frost: May 31 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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.
SPC Convective Outlook
Storm Prediction Center — Issaquah
SPC has placed Issaquah in the General Thunderstorms category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.