Irwin, WA
Unincorporated community in Spokane County, Washington
Irwin is a small unincorporated community in Spokane County, Washington. It is 1.6 miles W of Millwood, the nearest town. Its ZIP code is 99216.
Irwin at a glance
- State
- Washington
- County
- Spokane County
- ZIP code
- 99216
- Nearest town
- Millwood (1.6 mi)
- Time zone
- America/Los Angeles
- Coordinates
- 47.6928, -117.2436
Weather in Irwin now
Loading the National Weather Service forecast…
Irwin weather by the hour
Irwin weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Irwin.
This week in Irwin
Sunrise, sunset and moon in Irwin
What is the weather usually like in Irwin?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 87°F average high
- Decembercoldest month · 26°F average low
- 17.4 inprecipitation per year · 441 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Irwin: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station SPOKANE FELTS FLD, WA US (USW00094176), adjusted for the elevation of Irwin.
Irwin weather month by month
Sunrise and sunset in Irwin through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:30 AM | 4:26 PM | 8 h 55 min |
| February | 6:52 AM | 5:13 PM | 10 h 21 min |
| March | 6:59 AM | 6:56 PM | 11 h 56 min |
| April | 5:57 AM | 7:40 PM | 13 h 42 min |
| May | 5:08 AM | 8:21 PM | 15 h 12 min |
| June | 4:48 AM | 8:50 PM | 16 h 2 min |
| July | 5:05 AM | 8:44 PM | 15 h 39 min |
| August | 5:43 AM | 8:03 PM | 14 h 19 min |
| September | 6:25 AM | 7:02 PM | 12 h 37 min |
| October | 7:06 AM | 6:02 PM | 10 h 55 min |
| November | 6:53 AM | 4:14 PM | 9 h 20 min |
| December | 7:29 AM | 3:59 PM | 8 h 30 min |
Times for the 15th of each month, local time (America/Los Angeles).
What is the weather like in Irwin?
Irwin has a warm-summer mediterranean continental climate. The warmest month is July, with an average high of 87°F (31°C), and the coldest is December, with average lows of 26°F (-4°C).
It gets about 17.4 inches (441 mm) of precipitation a year. The wettest month is December and the driest is August.
The best time to visit Irwin is June to September. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near Irwin
The closest live webcam is Spokane Valley: I-90 at MP 290.1: Pines Rd, 1.4 miles S of Irwin.
Webcams: Windy.com. Distances in a straight line from Irwin.
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Map of Irwin, WA
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Irwin Street View
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Questions about Irwin
Where is Irwin, WA?
Irwin is an unincorporated community in Spokane County, Washington, 1.6 miles W of Millwood.
What county is Irwin in?
Irwin is in Spokane County, Washington.
What is the ZIP code of Irwin, WA?
The ZIP code for Irwin is 99216.
What is the nearest town to Irwin?
Millwood, 1.6 miles away.
Are there webcams near Irwin?
Yes. The closest is Spokane Valley: I-90 at MP 290.1: Pines Rd, 1.4 miles away.
What is the hottest month in Irwin?
July, with an average high of 87°F (31°C).
What is the coldest month in Irwin?
December, with an average low of 26°F (-4°C).
How much does it rain in Irwin?
About 17.4 inches (441 mm) a year; the wettest month is December.
Does it snow in Irwin?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Irwin?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Irwin have?
Warm-summer mediterranean continental (Köppen Dsb).
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