Water Temperature of Maxwell Creek in Saint Helena, CA

Current Water Temperature

57.6°F

Measurement Time: Wednesday, March 30, 2022, 6:00 AM PDT

Temperature Locations

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Local Points of Interest

Pope Valley, CA

Maxwell Creek

Station Name: MAXWELL C NR POPE VALLEY CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 551 feet

Nearest Address:
2458 Dollarhide Rd
Saint Helena, CA 94574
Napa County

GPS Coordinates: 38.61460278, -122.3459917

Nearby Water Temperatures

Pope Creek, Saint Helena, CA (2.5 mi)
Russian River, Jimtown, CA (26.3 mi)
Russian River, Healdsburg, CA (27.5 mi)
Mark West Creek, Forestville, CA (28.6 mi)
Cache Creek, Yolo, CA (30.1 mi)
Dry Creek, Healdsburg, CA (31.5 mi)
Russian River, Forestville, CA (32.3 mi)
Carquinez Strait, Crockett, CA (38.8 mi)
Sacramento River, Meridian, CA (39.2 mi)
Carquinez Strait, Martinez, CA (41.8 mi)
Suisun Bay, Concord, CA (42 mi)
Russian River, Hopland, CA (42.3 mi)
Sacramento River Deep Water Ship Chennel, Rio Vista, CA (44.7 mi)
San Francisco Bay, San Rafael, CA (47.2 mi)
San Francisco Bay, Richmond, CA (47.5 mi)

Weather for Saint Helena, California

Current Weather

71.4°F
Clear
Conditions: Clear
Humidity: 32%
Feels Like: 67.5°F
Wind: W 2.9 mph
Wind Gusts: 9.6 mph
Pressure: 29.87 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Sunny
Wed
H: 97°F
L: 66°F
Sunny
Thu
H: 98°F
L: 66°F
Sunny
Fri
H: 93°F
L: 56°F
Sunny
Sat
H: 73°F
L: 50°F
Sunny
Sun
H: 73°F
L: 45°F

Air Quality

AQI: 1 - Good
PM2.5: 14.7 μg/m3
PM10: 18.3 μg/m3
Carbon Monoxide: 117 μg/m3
Nitrogen Dioxide: 16.1 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:57 AM
Sunset: 6:43 PM
Daylight: 11 hrs 32 mins
Moonrise: 4:00 AM
Moon Transit: 10:42 AM
Moonset: 5:13 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

6:08 PM - 8:38 PM
10:12 AM - 12:42 AM

Minor Periods

4:43 PM - 6:13 PM
3:30 AM - 5:00 AM

Action Rating: 3 out of 5

Heat Advisory issued October 6 at 9:02PM PDT until October 8 at 10:00PM PDT by NWS San Francisco CA

Effective: Tue October 6, 2026, 9:02 PM
Expires: Wed October 7, 2026, 10:00 PM

* WHAT...Hot conditions with maximum temperatures in the mid-90s to near 105. Mild minimum temperatures and weak onshore flow will limit overnight relief. * WHERE...The East Bay and San Francisco Bay Shoreline, North Bay Interior Mountains and Valleys, The Santa Clara Valley and Eastern Hills, The Santa Cruz Mountains, Interior Monterey County and the Santa Lucia Range, Most of San Benito County and the Cholame Hills in Southeast Monterey County, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio. * WHEN...Until 10 PM PDT Thursday. * IMPACTS...For the Heat Advisory, this level of heat affects anyone without effective cooling and/or adequate hydration. Impacts likely in some health systems, heat-sensitive industries and infrastructure.

Hydration is a critical piece to surviving the heat. Drink water, and if possible, take water to those who are vulnerable. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to the early morning or evening. Take action when you experience symptoms of heat exhaustion and/or heat stroke. Beat the heat and check the backseat! Do not leave young children or pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.


Heat Advisory issued October 7 at 8:42AM PDT until October 8 at 10:00PM PDT by NWS San Francisco CA

Effective: Wed October 7, 2026, 8:42 AM
Expires: Thu October 8, 2026, 2:00 AM

* WHAT...Hot conditions with maximum temperatures in the mid-90s to near 105. Mild minimum temperatures and weak onshore flow will limit overnight relief. * WHERE...The East Bay and San Francisco Bay Shoreline, North Bay Interior Mountains and Valleys, The Santa Clara Valley and Eastern Hills, The Santa Cruz Mountains, Interior Monterey County and the Santa Lucia Range, Most of San Benito County and the Cholame Hills in Southeast Monterey County, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio. * WHEN...Until 10 PM PDT Thursday. * IMPACTS...This level of heat affects anyone without effective cooling and/or adequate hydration. Impacts likely in some health systems, heat-sensitive industries and infrastructure.

Hydration is a critical piece to surviving the heat. Drink water, and if possible, take water to those who are vulnerable. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to the early morning or evening. Take action when you experience symptoms of heat exhaustion and/or heat stroke. Beat the heat and check the backseat! Do not leave young children or pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.


Heat Advisory issued October 7 at 6:58AM PDT until October 8 at 10:00PM PDT by NWS San Francisco CA

Effective: Wed October 7, 2026, 6:58 AM
Expires: Wed October 7, 2026, 3:00 PM

* WHAT...Temperatures up to 98. * WHERE...The East Bay and San Francisco Bay Shoreline, North Bay Interior Mountains and Valleys, The Santa Clara Valley and Eastern Hills, The Santa Cruz Mountains, Interior Monterey County and the Santa Lucia Range, Most of San Benito County and the Cholame Hills in Southeast Monterey County, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio. * WHEN...Until 10 PM PDT Thursday. * IMPACTS...This level of heat affects anyone without effective cooling and/or adequate hydration. Impacts likely in some health systems, heat-sensitive industries and infrastructure.

Hydration is a critical piece to surviving the heat. Drink water, and if possible, take water to those who are vulnerable. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to the early morning or evening. Take action when you experience symptoms of heat exhaustion and/or heat stroke.


Wednesday, October 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 77.7°F
Average Humidity: 30%
Chance of Rain: 0%
Wind: 8.7 mph
UV Index: 5.7

Air Quality

AQI: 1 - Good
PM2.5: 10.41 μg/m3
PM10: 15.02 μg/m3
Carbon Monoxide: 117.33 μg/m3
Nitrogen Dioxide: 11.45 μg/m3
Sulphur Dioxide: 0.47 μg/m3
Ozone: 71.83 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:57 AM
Sunset: 6:43 PM
Daylight: 11 hrs 32 mins
Moonrise: 4:00 AM
Moon Transit: 10:42 AM
Moonset: 5:13 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

6:08 PM - 8:38 PM
10:12 AM - 12:42 AM

Minor Periods

4:43 PM - 6:13 PM
3:30 AM - 5:00 AM

Action Rating: 3 out of 5

Thursday, October 8, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 78.4°F
Average Humidity: 28%
Chance of Rain: 0%
Wind: 4.9 mph
UV Index: 5.8

Air Quality

AQI: 1 - Good
PM2.5: 14.19 μg/m3
PM10: 18.05 μg/m3
Carbon Monoxide: 122.54 μg/m3
Nitrogen Dioxide: 14 μg/m3
Sulphur Dioxide: 0.58 μg/m3
Ozone: 73.46 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 12:56 AM
Sunset: 6:41 PM
Daylight: 11 hrs 30 mins
Moonrise: 5:08 AM
Moon Transit: 11:28 AM
Moonset: 5:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

6:54 PM - 9:24 PM
10:58 AM - 1:28 PM

Minor Periods

5:07 PM - 6:37 PM
4:38 AM - 6:08 AM

Action Rating: 4 out of 5

Friday, October 9, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 73.8°F
Average Humidity: 40%
Chance of Rain: 1%
Wind: 8.7 mph
UV Index: 5.2

Air Quality

AQI: 1 - Good
PM2.5: 14.62 μg/m3
PM10: 18.26 μg/m3
Carbon Monoxide: 134 μg/m3
Nitrogen Dioxide: 10.58 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 64.21 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:56 AM
Sunset: 6:40 PM
Daylight: 11 hrs 27 mins
Moonrise: 6:15 AM
Moon Transit: 12:13 AM
Moonset: 6:01 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

7:38 PM - 10:08 PM
11:43 AM - 2:13 PM

Minor Periods

5:31 PM - 7:01 PM
5:45 AM - 7:15 AM

Action Rating: 4 out of 5

Saturday, October 10, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 58.6°F
Average Humidity: 67%
Chance of Rain: 5%
Wind: 10.3 mph
UV Index: 5.1

Air Quality

AQI: 1 - Good
PM2.5: 7.4 μg/m3
PM10: 9.94 μg/m3
Carbon Monoxide: 115.29 μg/m3
Nitrogen Dioxide: 5.73 μg/m3
Sulphur Dioxide: 0.72 μg/m3
Ozone: 61.25 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 12:56 AM
Sunset: 6:38 PM
Daylight: 11 hrs 25 mins
Moonrise: 7:21 AM
Moon Transit: 12:57 AM
Moonset: 6:26 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

8:23 PM - 10:53 PM
12:27 AM - 2:57 PM

Minor Periods

5:56 PM - 7:26 PM
6:51 AM - 8:21 AM

Action Rating: 4 out of 5

Sunday, October 11, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 56.4°F
Average Humidity: 57%
Chance of Rain: 3%
Wind: 10.3 mph
UV Index: 4.5

Air Quality

AQI: 1 - Good
PM2.5: 7.28 μg/m3
PM10: 10.09 μg/m3
Carbon Monoxide: 126.5 μg/m3
Nitrogen Dioxide: 10.21 μg/m3
Sulphur Dioxide: 0.81 μg/m3
Ozone: 54.17 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 12:56 AM
Sunset: 6:37 PM
Daylight: 11 hrs 22 mins
Moonrise: 8:26 AM
Moon Transit: 1:43 PM
Moonset: 6:53 PM
Moon Phase: New
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

9:09 PM - 11:39 PM
1:13 PM - 3:43 PM

Minor Periods

6:23 PM - 7:53 PM
7:56 AM - 9:26 AM

Action Rating: 4 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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