Riverton, Washington Climate
United States
Pop. 6,407 Elev. 105 m / 345 ft
TZ: America/Los_Angeles (UTC-7) ·
Riverton sees mild summers peaking at 78°F (26°C) in July, and cool winters that bottom out around 36°F (2°C) in January. Precipitation occurs on roughly 78 days per year (51.5 in / 1307 mm total), with 5 in (128 mm) of annual snowfall. Overcast skies are common, with only 77 sunny days per year. Ocean water temperatures reach 61°F (16°C) in summer.
| Temperature | 78°F (26°C) high | 36°F (2°C) low |
| Feels like | 35°F (2°C) low | |
| Rain | 78 days | 51.5 in (1307 mm) /yr |
| Snow | 0 days | 5.0 in (128 mm) /yr |
| Sky | 77 sunny | 17 stormy |
| Wind | 2.4 mph (1.1 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Apr, May, Jun, Jul, Aug, Sep
Sky & Air by Month
Cloud cover (%)
58
Jan 72
Feb 84
Mar 59
Apr 61
May 54
Jun 42
Jul 55
Aug 53
Sep 62
Oct 84
Nov 84
Dec Humidity (%)
83
Jan 80
Feb 79
Mar 70
Apr 69
May 68
Jun 64
Jul 72
Aug 76
Sep 81
Oct 86
Nov 89
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 3 mi Seattle–Tacoma International Airport (SEA)
Ski resort 40 mi Alpental Backcountry
National park 80 mi San Juan Island National Historical Park
Mountain peak
(5,778 ft) 37 mi Old Baldy Mountain
Hospital 0 mi Cascade Behavioral Health
Hiking trail 8 mi Yellow Loop
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 46°F 8°C | 36°F 2°C | 2.7 in 70 mm | 0.1 in3 mm | 9 |
| February | 46°F 8°C | 37°F 3°C | 5.0 in 127 mm | 4.7 in119 mm | 4 |
| March | 54°F 12°C | 43°F 6°C | 7.7 in 194 mm | 0.1 in4 mm | 1 |
| April | 60°F 16°C | 45°F 7°C | 3.5 in 90 mm | — | 7 |
| May | 66°F 19°C | 49°F 9°C | 2.5 in 65 mm | — | 7 |
| June | 71°F 22°C | 55°F 13°C | 0.8 in 20 mm | — | 10 |
| July | 78°F 26°C | 59°F 15°C | 0.2 in 6 mm | — | 16 |
| August | 77°F 25°C | 60°F 16°C | 2.4 in 60 mm | — | 9 |
| September | 73°F 23°C | 56°F 14°C | 1.1 in 27 mm | — | 8 |
| October | 60°F 15°C | 47°F 9°C | 5.8 in 147 mm | — | 5 |
| November | 54°F 12°C | 46°F 8°C | 7.9 in 201 mm | — | 0 |
| December | 50°F 10°C | 42°F 6°C | 11.9 in 301 mm | 0.1 in2 mm | 1 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 9 | 0 |
| February | 4 | 1 |
| March | 1 | 2 |
| April | 7 | 2 |
| May | 7 | 1 |
| June | 10 | 1 |
| July | 16 | 0 |
| August | 9 | 0 |
| September | 8 | 0 |
| October | 5 | 6 |
| November | 0 | 2 |
| December | 1 | 2 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 48°F 9°C | 42°F 5°C |
| February | 47°F 8°C | 39°F 4°C |
| March | 48°F 9°C | 41°F 5°C |
| April | 53°F 11°C | 47°F 8°C |
| May | 55°F 13°C | 55°F 13°C |
| June | 60°F 16°C | 63°F 17°C |
| July | 60°F 16°C | 69°F 20°C |
| August | 61°F 16°C | 70°F 21°C |
| September | 61°F 16°C | 68°F 20°C |
| October | 57°F 14°C | 56°F 13°C |
| November | 52°F 11°C | 50°F 10°C |
| December | 50°F 10°C | 46°F 8°C |