Walnut Grove, Washington Climate
United States
Pop. 9,790 Elev. 85 m / 279 ft
TZ: America/Los_Angeles (UTC-7) ·
Walnut Grove has mild summers with average highs of 84°F (29°C) in July, and cool winters averaging 34°F (1°C) in January. Rain falls on about 87 days per year (70.5 in / 1790 mm total), with snow on 3 days and 17 in (419 mm) of annual accumulation. The city averages 102 sunny days per year and around 41 thunderstorm days. Nearby lake water reaches 68°F (20°C) in summer.
| Temperature | 84°F (29°C) high | 34°F (1°C) low |
| Feels like | 87°F (30°C) high | 34°F (1°C) low |
| Rain | 87 days | 70.5 in (1790 mm) /yr |
| Snow | 3 days | 16.5 in (419 mm) /yr |
| Sky | 102 sunny | 41 stormy |
| Wind | 2.7 mph (1.2 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, May, Jun, Jul, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
52
Jan 74
Feb 86
Mar 57
Apr 62
May 45
Jun 30
Jul 50
Aug 46
Sep 62
Oct 87
Nov 86
Dec Humidity (%)
77
Jan 78
Feb 79
Mar 63
Apr 62
May 62
Jun 57
Jul 62
Aug 69
Sep 78
Oct 86
Nov 88
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 5 mi Portland International Airport (PDX)
Ski resort 40 mi Tubing Hill
National park 12 mi Willamette Stone State Heritage Site
Mountain peak
(8,193 ft) 41 mi
Hospital 3 mi PeaceHealth Southwest Medical Center
Hiking trail 5 mi Columbia Slough Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 47°F 9°C | 34°F 1°C | 4.7 in 120 mm | 0.2 in6 mm | 11 |
| February | 47°F 8°C | 35°F 2°C | 8.7 in 220 mm | 13.8 in350 mm | 4 |
| March | 56°F 13°C | 42°F 5°C | 11.3 in 286 mm | 2.3 in58 mm | 2 |
| April | 65°F 18°C | 43°F 6°C | 3.3 in 84 mm | — | 10 |
| May | 70°F 21°C | 47°F 8°C | 2.3 in 57 mm | — | 8 |
| June | 76°F 25°C | 51°F 11°C | 1.7 in 44 mm | — | 12 |
| July | 84°F 29°C | 56°F 13°C | 0.1 in 3 mm | — | 19 |
| August | 83°F 28°C | 59°F 15°C | 2.0 in 52 mm | — | 12 |
| September | 78°F 25°C | 55°F 13°C | 1.6 in 41 mm | — | 15 |
| October | 61°F 16°C | 45°F 7°C | 6.7 in 171 mm | — | 8 |
| November | 53°F 12°C | 44°F 6°C | 9.9 in 253 mm | — | 0 |
| December | 50°F 10°C | 41°F 5°C | 18.1 in 459 mm | 0.2 in5 mm | 1 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 11 | 2 |
| February | 4 | 7 |
| March | 2 | 8 |
| April | 10 | 2 |
| May | 8 | 1 |
| June | 12 | 2 |
| July | 19 | 0 |
| August | 12 | 1 |
| September | 15 | 1 |
| October | 8 | 7 |
| November | 0 | 4 |
| December | 1 | 6 |
Water Temperatures Data
↑ See chart| Month | Lake Avg High |
|---|---|
| January | 38°F 4°C |
| February | 35°F 2°C |
| March | 44°F 6°C |
| April | 50°F 10°C |
| May | 56°F 13°C |
| June | 62°F 17°C |
| July | 67°F 19°C |
| August | 68°F 20°C |
| September | 66°F 19°C |
| October | 54°F 12°C |
| November | 47°F 9°C |
| December | 45°F 7°C |