Grinnell, WA
Unincorporated community in Whitman County, Washington
Grinnell is a small unincorporated community in Whitman County, Washington. It is 3.6 miles S of Palouse, the nearest town. Its ZIP code is 99161.
Grinnell at a glance
- State
- Washington
- County
- Whitman County
- ZIP code
- 99161
- Nearest town
- Palouse (3.6 mi)
- Time zone
- America/Los Angeles
- Coordinates
- 46.9622, -117.0678
Weather in Grinnell now
Loading the National Weather Service forecast…
Grinnell weather by the hour
Grinnell weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Grinnell.
This week in Grinnell
Sunrise, sunset and moon in Grinnell
What is the weather usually like in Grinnell?
Köppen climate classification, calculated from the 1991–2020 normals
- Augustwarmest month · 84°F average high
- Decembercoldest month · 25°F average low
- 24.5 inprecipitation per year · 622 mm
- 41.3 insnowfall per year · 105 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Grinnell: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station POTLATCH 3 NNE, ID US (USC00107301), adjusted for the elevation of Grinnell.
Grinnell weather month by month
Sunrise and sunset in Grinnell through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:27 AM | 4:28 PM | 9 h 0 min |
| February | 6:50 AM | 5:14 PM | 10 h 24 min |
| March | 6:58 AM | 6:55 PM | 11 h 56 min |
| April | 5:58 AM | 7:38 PM | 13 h 40 min |
| May | 5:10 AM | 8:18 PM | 15 h 7 min |
| June | 4:50 AM | 8:46 PM | 15 h 56 min |
| July | 5:07 AM | 8:41 PM | 15 h 34 min |
| August | 5:44 AM | 8:00 PM | 14 h 16 min |
| September | 6:24 AM | 7:01 PM | 12 h 36 min |
| October | 7:05 AM | 6:02 PM | 10 h 57 min |
| November | 6:50 AM | 4:15 PM | 9 h 25 min |
| December | 7:25 AM | 4:01 PM | 8 h 36 min |
Times for the 15th of each month, local time (America/Los Angeles).
What is the weather like in Grinnell?
Grinnell has a warm-summer mediterranean continental climate. The warmest month is August, with an average high of 84°F (29°C), and the coldest is December, with average lows of 25°F (-4°C).
It gets about 24.5 inches (622 mm) of precipitation a year. The wettest month is December and the driest is August. Snow is common: about 41 inches fall in an average year.
The best time to visit Grinnell 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 Grinnell
The closest live webcam is Colfax › South: US 195 at MP 38.5, 14.9 miles W of Grinnell.
Webcams: Windy.com. Distances in a straight line from Grinnell.
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Map of Grinnell, WA
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Grinnell Street View
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Open in Google Maps ›Towns near Grinnell
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Questions about Grinnell
Where is Grinnell, WA?
Grinnell is an unincorporated community in Whitman County, Washington, 3.6 miles S of Palouse.
What county is Grinnell in?
Grinnell is in Whitman County, Washington.
What is the ZIP code of Grinnell, WA?
The ZIP code for Grinnell is 99161.
What is the nearest town to Grinnell?
Palouse, 3.6 miles away.
Are there webcams near Grinnell?
Yes. The closest is Colfax › South: US 195 at MP 38.5, 14.9 miles away.
What is the hottest month in Grinnell?
August, with an average high of 84°F (29°C).
What is the coldest month in Grinnell?
December, with an average low of 25°F (-4°C).
How much does it rain in Grinnell?
About 24.5 inches (622 mm) a year; the wettest month is December.
Does it snow in Grinnell?
Yes, about 41 inches of snow fall in an average year.
When is the best time to visit Grinnell?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Grinnell have?
Warm-summer mediterranean continental (Köppen Dsb).
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