GRAND MOUND, WA 98531 Weather Forecast & Current Conditions

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OLYMPIA, WA
Current Weather

10:54 AM PDT MAY 22, 2026
Clear
66°F
Feels Like: 66°F
Dewpoint: 50°F
Rel. Hum.: 56%
Visibility: 10 miles
Wind: Calm
Pressure: 29.97 inches
Last 72 hours

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GRAND MOUND, WA 98531
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Cloudy. A slight chance of rain in the morning, then a chance of rain in the late morning and early afternoon. Rain likely late in the afternoon. Rainfall amounts less than a tenth of an inch likely. Highs in the upper 40s to mid 50s. Southeast wind to 10 mph increasing to 10 to 15 mph in the afternoon. Gusts to 30 mph.
TONIGHT
Rain. Rainfall amounts a quarter to a half inch possible. Lows near 40. South wind 10 to 20 mph with gusts to 30 mph.
THURSDAY
Rain at times. Rainfall amounts a quarter to a half inch possible. Highs in the mid 40s to lower 50s. South wind 10 to 15 mph with gusts to 30 mph.
THURSDAY NIGHT
Rain. Rainfall amounts a half inch to one inch possible. Lows in the lower to mid 40s. South wind 10 to 20 mph. Gusts to 30 mph increasing to 40 mph after midnight.
FRIDAY
Rain. Rainfall amounts a quarter to a half inch possible. Highs near 50. South wind 10 to 15 mph becoming southwest in the afternoon. Gusts to 30 mph.
FRIDAY NIGHT
Rain showers in the evening, then rain showers likely after midnight. Lows in the upper 30s.
SATURDAY
Rain showers likely in the morning, then rain at times in the afternoon. Highs in the lower to mid 50s.
SATURDAY NIGHT
Rain likely in the evening, then rain at times after midnight. Lows in the lower to mid 40s.
SUNDAY
Rain at times. Highs in the mid 50s.
SUNDAY NIGHT
Cloudy with rain at times in the evening, then mostly cloudy with a chance of rain after midnight. Lows in the mid to upper 40s.
MONDAY
Mostly cloudy with a chance of rain. Highs in the mid 60s.
MONDAY NIGHT
Mostly cloudy. A slight chance of rain in the evening. Lows in the mid to upper 40s.
TUESDAY
Partly sunny. Highs near 70.

Visible Weather Satellite
GRAND MOUND, WA 98531
Infrared Weather Satellite
GRAND MOUND, WA 98531
NEXRAD Weather Radar
GRAND MOUND, WA 98531

OLYMPIA, WA 3 hourly weather forecast

weather forecast created  6:00 AM MDT  5/22/2026
Friday
22 MAY 2026
GRAND MOUND, WA 98531 weather forecast Day 1, 12 hours 11 AM 66° 66° Clear 0%

0% Thunder
( 0% severe)
N   3 56% 50°
High 78° GRAND MOUND, WA 98531 weather forecast Day 1, 15 hours 2 PM 75° 75° Clear NW   5 41% 50°
Partly Cloudy



GRAND MOUND, WA 98531 weather forecast Day 1, 18 hours 5 PM 77° 78° Partly Cloudy 0%

0% Thunder
( 0% severe)
WNW   9 40% 51°
GRAND MOUND, WA 98531 weather forecast Day 1, 21 hours 8 PM 68° 68° Partly Cloudy W   8 54% 51°
Saturday
23 MAY 2026
GRAND MOUND, WA 98531 weather forecast Day 2, 0 hours 11 PM 55° 54° Partly Cloudy 0%

0% Thunder
( 0% severe)
S   6 80% 49°
Low 48° GRAND MOUND, WA 98531 weather forecast Day 2, 3 hours 2 AM 51° 50° Mostly Cloudy S   5 89% 48°
High 73° GRAND MOUND, WA 98531 weather forecast Day 2, 6 hours 5 AM 50° 48° Mostly Cloudy 0%

0% Thunder
( 0% severe)
S   5 93% 48°

Mostly Cloudy



GRAND MOUND, WA 98531 weather forecast Day 2, 9 hours 8 AM 53° 51° Mostly Cloudy SW   6 83% 48°
GRAND MOUND, WA 98531 weather forecast Day 2, 12 hours 11 AM 61° 60° Partly Cloudy 0%

0% Thunder
( 0% severe)
SW   7 62% 48°
GRAND MOUND, WA 98531 weather forecast Day 2, 15 hours 2 PM 70° 70° Mostly Cloudy WSW   8 45% 48°
GRAND MOUND, WA 98531 weather forecast Day 2, 18 hours 5 PM 72° 72° Partly Cloudy 0%

0% Thunder
( 0% severe)
WSW   10 39% 46°
GRAND MOUND, WA 98531 weather forecast Day 2, 21 hours 8 PM 64° 64° Partly Cloudy WSW   9 48% 44°
Sunday
24 MAY 2026
GRAND MOUND, WA 98531 weather forecast Day 3, 0 hours 11 PM 52° 50° Clear 0%

0% Thunder
( 0% severe)
SSW   7 71% 43°
Low 43° GRAND MOUND, WA 98531 weather forecast Day 3, 3 hours 2 AM 47° 44° Mostly Cloudy SSW   6 83% 42°
High 72° GRAND MOUND, WA 98531 weather forecast Day 3, 6 hours 5 AM 45° 44° Mostly Cloudy 0%

0% Thunder
( 0% severe)
SSW   3 89% 42°

Mostly Cloudy



GRAND MOUND, WA 98531 weather forecast Day 3, 9 hours 8 AM 51° 50° Mostly Cloudy SW   5 77% 44°
GRAND MOUND, WA 98531 weather forecast Day 3, 15 hours 11 AM 61° 61° Mostly Cloudy 0%

0% Thunder
( 0% severe)
SW   6 56% 45°
GRAND MOUND, WA 98531 weather forecast Day 3, 18 hours 2 PM 69° 69° Mostly Cloudy WSW   7 39% 43°
GRAND MOUND, WA 98531 weather forecast Day 3, 21 hours 5 PM 72° 72° Mostly Cloudy     WSW   7 35% 43°

OLYMPIA, WA extended weather forecast

Monday
25 MAY 2026
Tuesday
26 MAY 2026
Wednesday
27 MAY 2026
Thursday
28 MAY 2026
Friday
29 MAY 2026
Low 48° Low 47° Low 45° Low 46° Low 49°
High 61° High 64° High 68° High 70° High 67°
GRAND MOUND, WA 98531 weather forecast Day 4 GRAND MOUND, WA 98531 weather forecast Day 5 GRAND MOUND, WA 98531 weather forecast Day 6 GRAND MOUND, WA 98531 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Overcast
89% Rain
Overcast
84% Rain
Overcast
38% Rain
Mostly Cloudy
17% Rain
Overcast
35% Rain
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