Spokane, WA weather in August
In August, Spokane sees highs around 84°F and lows around 57°F: warm and mostly dry. Rain falls on about 3 days. It is one of the warmest months in Spokane. Good for outdoor plans.
- Normal high
- 84°F
- Normal low
- 57°F
- Wet days
- 3
- 0.5 in total
- Muggy days
- 0
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 87°F | 79°F |
| Normal low | 60°F | 53°F |
| Chance of a wet day | 10% | 12% |
| Sunrise / sunset | 5:27 am / 8:24 pm | 6:07 am / 7:33 pm |
| Daylight | 15.0 h | 13.4 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical August day
- 6 am59°Fdew point 48°F
- 9 am71°Fdew point 48°F
- Noon80°Fdew point 46°F
- 3 pm84°Fdew point 43°F
- 6 pm81°Fdew point 43°F
- 9 pm67°Fdew point 44°F
NOAA hourly normals (local standard time) from Spokane Felts Fld (5 mi away); average wind 5 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F10 of 31
- Hot dayshigh 90°F or more8 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow3 of 31
- Notable rainat least 0.10 in1 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 0.5 in; a dry August brings about 0.2 in and a wet one about 0.6 in (25th and 75th percentiles). Days with half an inch or more are rare.
How August varies from year to year
- Warmest August, 1991-20202017: average high 88°F
- Coolest August1993: average high 78°F
- Wettest August2004: 1.9 in
- Driest August2000: no measurable precipitation
- Highest reading103°F (August 9, 2018)
- Lowest reading37°F (August 29, 1993)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 84°F | 84°F | 74°F |
| Normal low | 58°F | 57°F | 49°F |
| Wet days | 4 | 3 | 5 |
| Comfortable days | 10 | 10 | 17 |
| Daylight | 15.5 h | 14.2 h | 12.6 h |
Highs change by 0°F from July and -10°F into September.
Nearby alternatives in August
- Cooler: Everett, WA223 mi · high 76°F · 6 wet days
How Spokane ranks in August
- Normal high234th warmest of 378 cities; 2nd of 9 in Washington
- Wet days73rd driest of 378
- Comfortable days65th most of 341
What to pack for Spokane in August
- Layers – afternoons near 84°F but nights near 57°F
- Sunglasses and sunscreen – about 14.2 hours of daylight and highs near 84°F
Heating and cooling
August has 28 heating degree days and 190 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Spokane in August?
The normal high is 84°F and the normal low is 57°F. From 1991 to 2020 the hottest August reading was 103°F (most recently on August 9, 2018).
Does it rain a lot in Spokane in August?
About 3 days in August have at least 0.01 in of precipitation, and the normal total is 0.5 in. The wettest August in 1991-2020 was in 2004 (1.9 in); the driest was in 2000, with no measurable precipitation.
Is August a good time to visit Spokane?
August ranks 5th of 12 months on our comfort score for Spokane (64 out of 100). It has about 10 comfortable days and about 8 days at 90°F or hotter. The best month is June.
Where the numbers come from
- Temperature, rain, snowfall and snow depth: Spokane Intl Airport (USW00024157), 5.4 mi WSW of the city center, 2,353 ft (483 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Frost dates and humidity and wind by hour: Spokane Felts Fld (USW00094176), 5.2 mi ENE of the city center, 1,953 ft (83 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Spokane International Airport (727850-24157), 5.4 mi WSW of the city center, 2,355 ft (485 ft higher than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).