Weather for Helena, California
Current Weather
Humidity: 93%
Feels Like: 34.7°F
Wind: E 2.2 mph
Wind Gusts: 2.9 mph
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 0 mi
UV Index: 0.4
Five Day Weather Forecast
Mon
H: 76°F
L: 44°F
Tue
H: 72°F
L: 45°F
Wed
H: 69°F
L: 54°F
Thu
H: 65°F
L: 44°F
Fri
H: 63°F
L: 41°F
Air Quality
Nitrogen Dioxide: 0.95 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 105 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 6:24 PM
Daylight: 10 hrs 55 mins
Moon Transit: 12:23 AM
Moonset: 5:51 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%
Best Times for Fishing or Hunting
Major Periods
7:41 PM - 10:11 PM11:53 AM - 2:23 PM
Minor Periods
5:21 PM - 6:51 PM6:17 AM - 7:47 AM
Action Rating: 4 out of 5
Frost Advisory issued October 20 at 12:10AM PDT until October 20 at 10:00AM PDT by NWS Eureka CA
Effective: Mon October 20, 2025, 12:10 AM
Expires: Mon October 20, 2025, 8:15 AM
* WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Southern Trinity. * WHEN...Until 10 AM PDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
Beach Hazards Statement issued October 19 at 10:24PM PDT until October 20 at 10:00AM PDT by NWS Eureka CA
Effective: Sun October 19, 2025, 10:24 PM
Expires: Mon October 20, 2025, 10:00 AM
* WHAT...Increased threat of sneaker waves and enhanced surf up to 22 feet. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...Until 10 AM PDT Monday. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These sneaker waves can also move large objects such as logs, crushing anyone caught underneath. * ADDITIONAL DETAILS...A large long period NW swell will build this evening and peak overnight. Above normal breakers from 16 to 20 feet on west and northwest facing beaches will be possible this evening through early Monday morning.
Don't be fooled by an ocean that looks calm. There can be 30 minutes of small waves before a sneaker wave strikes. Avoid rocks and jetties. Avoid steep beaches. Stay much farther back from the water and never turn your back on the ocean.
Weather Forecast
Average Temperature: 57.3°F
Average Humidity: 35%
Wind: 2.9 mph
UV Index: 0.9
Air Quality
Nitrogen Dioxide: 4.62 μg/m3
Sulphur Dioxide: 1.71 μg/m3
Ozone: 68.28 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 6:24 PM
Daylight: 10 hrs 55 mins
Moon Transit: 12:23 AM
Moonset: 5:51 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%
Best Times for Fishing or Hunting
Major Periods
7:41 PM - 10:11 PM11:53 AM - 2:23 PM
Minor Periods
5:21 PM - 6:51 PM6:17 AM - 7:47 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 58.8°F
Average Humidity: 26%
Wind: 2.9 mph
UV Index: 0.8
Air Quality
Nitrogen Dioxide: 6.99 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 70.04 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 6:23 PM
Daylight: 10 hrs 52 mins
Moon Transit: 1:05 PM
Moonset: 6:14 PM
Moon Phase: New
Moon Illumination: 1.2%
Best Times for Fishing or Hunting
Major Periods
8:23 PM - 10:53 PM12:35 AM - 3:05 PM
Minor Periods
5:44 PM - 7:14 PM7:18 AM - 8:48 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 59.8°F
Average Humidity: 44%
Wind: 8.3 mph
UV Index: 0.7
Air Quality
Nitrogen Dioxide: 6.8 μg/m3
Sulphur Dioxide: 1.47 μg/m3
Ozone: 77.04 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 6:21 PM
Daylight: 10 hrs 50 mins
Moon Transit: 1:48 PM
Moonset: 6:39 PM
Moon Phase: New
Moon Illumination: 0.0%
Best Times for Fishing or Hunting
Major Periods
9:08 PM - 11:38 PM1:18 PM - 3:48 PM
Minor Periods
6:09 PM - 7:39 PM8:21 AM - 9:51 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 52°F
Average Humidity: 49%
Wind: 4 mph
UV Index: 0.8
Air Quality
Nitrogen Dioxide: 5.4 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 77.16 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 6:20 PM
Daylight: 10 hrs 47 mins
Moon Transit: 2:34 PM
Moonset: 7:09 PM
Moon Phase: New
Moon Illumination: 1.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM2:04 PM - 4:34 PM
Minor Periods
6:39 PM - 8:09 PM9:24 AM - 10:54 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 51°F
Average Humidity: 42%
Wind: 8.9 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 7.92 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 64.15 μg/m3
Astronomical
Sun Transit: 12:56 AM
Sunset: 6:19 PM
Daylight: 10 hrs 45 mins
Moon Transit: 3:23 PM
Moonset: 7:46 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.8%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM2:53 PM - 5:23 PM
Minor Periods
7:16 PM - 8:46 PM10:27 AM - 11:57 AM
Action Rating: 2 out of 5