Water Temperature of the South Fork Tolt River in Stillwater, WA
Current Water Temperature
Measurement Time: Thursday, September 4, 2025, 12:00 AM PDT
Temperature Locations
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Local Points of Interest
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Station Name: SF TOLT RIVER BL REGULATING BASIN NR CARNATION, WA
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 764 feet / 233 meters
Nearest Address:
Stillwater, WA 98019
King County
GPS Coordinates: 47.69676817, -121.7873379
Nearby Water Temperatures
North Fork Tolt River, Carnation, WA (1.1 mi)Tolt River, Carnation, WA (1.7 mi)
North Fork Tolt River, Carnation, WA (2.6 mi)
South Fork Tolt River, Carnation, WA (3.5 mi)
South Fork Tolt River, Baring, WA (8.7 mi)
Skykomish River, Gold Bar, WA (11.2 mi)
Sultan River, Sultan, WA (14.6 mi)
Sultan River, Lake Roesiger, WA (18.1 mi)
South Fork Sultan River, Sultan, WA (18.8 mi)
Canyon Creek, Cedar Falls, WA (19.2 mi)
Cedar River, Cedar Falls, WA (19.2 mi)
Cedar River, Cedar Falls, WA (19.3 mi)
Taylor Creek, Selleck, WA (21.6 mi)
Cedar River, Hobart, WA (22.3 mi)
Cedar River, Maple Valley, WA (23.7 mi)
Weather for Stillwater, Washington
Current Weather

Humidity: 93%
Feels Like: 61°F
Wind: ESE 2.7 mph
Wind Gusts: 5.1 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast

Thu
H: 83°F
L: 60°F

Fri
H: 95°F
L: 69°F

Sat
H: 78°F
L: 68°F

Sun
H: 69°F
L: 55°F

Mon
H: 69°F
L: 49°F
Air Quality
Nitrogen Dioxide: 25.72 μg/m3
Sulphur Dioxide: 10.18 μg/m3
Ozone: 115 μg/m3
Astronomical
Sun Transit: 1:06 PM
Sunset: 7:41 PM
Daylight: 13 hrs 10 mins
Moon Transit: 11:05 PM
Moonset: 2:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.3%
Best Times for Fishing or Hunting
Major Periods
5:45 AM - 8:15 AM12:00 AM - 12:00 AM
Minor Periods
6:10 PM - 7:40 PM1:53 AM - 3:23 AM
Action Rating: 3 out of 5
Red Flag Warning issued September 3 at 10:44PM PDT until September 4 at 9:00PM PDT by NWS Seattle WA
Effective: Wed September 3, 2025, 10:44 PM
Expires: Thu September 4, 2025, 6:45 AM
* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North Cascades Generally above 1500 Feet and Fire Weather Zone 659 West Slopes of the Central Cascades Generally above 1500 Feet. * RELATIVE HUMIDITY...As low as 20 percent. * TEMPERATURES...Up to 85. * STABILITY...Unstable conditions can be expected. * IMPACTS...A dry and unstable air mass with warm temperatures can contribute to active fire behavior. In western Washington, significant growth on existing fires takes place under such conditions. If a fire were to begin, air quality may diminish in the surrounding area.
A Red Flag Warning means that critical fire weather conditions are either imminent or occurring now. Any fires that develop will likely spread quickly. Outdoor burning is not recommended.
Heat Advisory issued September 3 at 10:43PM PDT until September 4 at 5:00PM PDT by NWS Seattle WA
Effective: Wed September 3, 2025, 10:43 PM
Expires: Thu September 4, 2025, 6:45 AM
* WHAT...Hot conditions with high temperatures ranging from the mid 80s to the lower 90s and low temperatures in the 60s. This will pose a moderate to locally major risk of heat-related illness. * WHERE...Foothills and Valleys of the North Cascades, Foothills and Valleys of Central King County, Foothills and Valleys of Pierce and Southern King Counties, Foothills and Valleys of Snohomish and Northern King Counties, and Foothills and Valleys of Thurston and Lewis Counties. * WHEN...Until 5 PM PDT Thursday. * IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. For sheltering information and other human services in your area, dial 2 1 1 during business hours or visit wa211.org anytime.
Red Flag Warning issued September 3 at 7:38PM PDT until September 4 at 9:00PM PDT by NWS Pendleton OR
Effective: Wed September 3, 2025, 7:38 PM
Expires: Thu September 4, 2025, 9:00 PM
...RED FLAG WARNING FOR ABUNDANT LIGHTNING WILL EXPIRE AT 8 PM WEDNESDAY FOR FIRE WEATHER ZONE OR705... ...RED FLAG WARNING IN EFFECT FOR HOT, DRY, AND UNSTABLE CONDITIONS THROUGH THURSDAY EVENING FOR FIRE WEATHER ZONE WA695... * AFFECTED AREA...Fire Weather Zone 695 East Washington South Central Cascade Mountains. * TIMING...Until 9 PM PDT Thursday. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.
A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.
Red Flag Warning issued September 3 at 10:44PM PDT until September 4 at 9:00PM PDT by NWS Seattle WA
Effective: Wed September 3, 2025, 10:44 PM
Expires: Thu September 4, 2025, 6:45 AM
* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North Cascades Generally above 1500 Feet and Fire Weather Zone 659 West Slopes of the Central Cascades Generally above 1500 Feet. * RELATIVE HUMIDITY...As low as 20 percent. * TEMPERATURES...Up to 85. * STABILITY...Unstable conditions can be expected. * IMPACTS...A dry and unstable air mass with warm temperatures can contribute to active fire behavior. In western Washington, significant growth on existing fires takes place under such conditions. If a fire were to begin, air quality may diminish in the surrounding area.
A Red Flag Warning means that critical fire weather conditions are either imminent or occurring now. Any fires that develop will likely spread quickly. Outdoor burning is not recommended.
Heat Advisory issued September 3 at 10:43PM PDT until September 4 at 5:00PM PDT by NWS Seattle WA
Effective: Wed September 3, 2025, 10:43 PM
Expires: Thu September 4, 2025, 6:45 AM
* WHAT...Hot conditions with high temperatures ranging from the mid 80s to the lower 90s and low temperatures in the 60s. This will pose a moderate to locally major risk of heat-related illness. * WHERE...Foothills and Valleys of the North Cascades, Foothills and Valleys of Central King County, Foothills and Valleys of Pierce and Southern King Counties, Foothills and Valleys of Snohomish and Northern King Counties, and Foothills and Valleys of Thurston and Lewis Counties. * WHEN...Until 5 PM PDT Thursday. * IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. For sheltering information and other human services in your area, dial 2 1 1 during business hours or visit wa211.org anytime.
Weather Forecast
Average Temperature: 71.7°F
Average Humidity: 80%
Wind: 4.5 mph
UV Index: 1.2
Air Quality
Nitrogen Dioxide: 43.34 μg/m3
Sulphur Dioxide: 8.77 μg/m3
Ozone: 86.16 μg/m3
Astronomical
Sun Transit: 1:06 PM
Sunset: 7:41 PM
Daylight: 13 hrs 10 mins
Moon Transit: 11:05 PM
Moonset: 2:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.3%
Best Times for Fishing or Hunting
Major Periods
5:45 AM - 8:15 AM12:00 AM - 12:00 AM
Minor Periods
6:10 PM - 7:40 PM1:53 AM - 3:23 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 80.1°F
Average Humidity: 55%
Wind: 4.9 mph
UV Index: 1.1
Air Quality
Nitrogen Dioxide: 50.84 μg/m3
Sulphur Dioxide: 8.41 μg/m3
Ozone: 76.88 μg/m3
Astronomical
Sun Transit: 1:05 PM
Sunset: 7:39 PM
Daylight: 13 hrs 7 mins
Moon Transit: 11:55 PM
Moonset: 3:41 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.6%
Best Times for Fishing or Hunting
Major Periods
6:37 AM - 9:07 AM12:00 AM - 12:00 AM
Minor Periods
6:32 PM - 8:02 PM3:11 AM - 4:41 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 73.5°F
Average Humidity: 64%
Wind: 5.6 mph
UV Index: 0.5
Air Quality
Nitrogen Dioxide: 50.03 μg/m3
Sulphur Dioxide: 8.6 μg/m3
Ozone: 82.64 μg/m3
Astronomical
Sun Transit: 1:05 PM
Sunset: 7:37 PM
Daylight: 13 hrs 3 mins
Moon Transit: 12:00 AM
Moonset: 5:01 AM
Moon Phase: Full
Moon Illumination: 99.5%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM7:27 AM - 9:57 AM
Minor Periods
6:51 PM - 8:21 PM4:31 AM - 6:01 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 61.5°F
Average Humidity: 92%
Wind: 3.8 mph
UV Index: 0.8
Air Quality
Nitrogen Dioxide: 24.65 μg/m3
Sulphur Dioxide: 3.63 μg/m3
Ozone: 63.84 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 7:35 PM
Daylight: 13 hrs mins
Moon Transit: 12:44 AM
Moonset: 6:23 AM
Moon Phase: Full
Moon Illumination: 99.8%
Best Times for Fishing or Hunting
Major Periods
12:14 AM - 2:44 AM8:16 AM - 10:46 AM
Minor Periods
7:08 PM - 8:38 PM5:53 AM - 7:23 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 58.5°F
Average Humidity: 88%
Wind: 4.5 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 21.55 μg/m3
Sulphur Dioxide: 3.12 μg/m3
Ozone: 50.46 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 7:33 PM
Daylight: 12 hrs 57 mins
Moon Transit: 12:28 AM
Moonset: 7:44 AM
Moon Phase: Full
Moon Illumination: 97.6%
Best Times for Fishing or Hunting
Major Periods
11:58 AM - 2:28 PM11:58 AM - 2:28 PM
Minor Periods
7:25 PM - 8:55 PM7:14 AM - 8:44 AM
Action Rating: 4 out of 5