Weather in St. Helena, CA
St. Helena, Friday, 23 October, 12:32
Clear. Feels like 70°. High 70°, low 53°.
Monthly outlook for St. Helena, CA: average high 66.3°, average low 48.4°. That is 2.8° below the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 3 days and 1.3 inches. The warmest day looks like 25 October (72.8°), the coolest 27 October (40.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 67.5° | 72.3° | -2.7° |
| 2 November – 11 November | 64.4° | 68.1° | -2.1° |
| 12 November – 21 November | at normal | 63.8° | — |
October records over 66 years
0St. Helena, Saturday, 24 October
Clear. High 70°, low 50°.
0
St. Helena, Sunday, 25 October
Overcast. High 73°, low 46°.
0St. Helena, Monday, 26 October
Clear. High 66°, low 47°.
0
St. Helena, Tuesday, 27 October
Partly cloudy. High 68°, low 41°.
0St. Helena, Wednesday, 28 October
Overcast. High 66°, low 46°.
0St. Helena, Thursday, 29 October
Overcast. High 65°, low 50°.
0St. Helena, Friday, 30 October
Overcast. High 71°, low 48°.
0.05
St. Helena, Saturday, 31 October
Light rain. High 69°, low 51°.
0.69St. Helena, Sunday, 1 November
Rain. High 56°, low 54°.
0.06St. Helena, Monday, 2 November
Light rain. High 61°, low 52°.
0.01St. Helena, Tuesday, 3 November
Light rain. High 64°, low 48°.
0St. Helena, Wednesday, 4 November
Partly cloudy. High 63°, low 44°.
0.01St. Helena, Thursday, 5 November
Light rain. High 61°, low 46°.
0St. Helena, Friday, 6 November
Overcast. High 69°, low 49°.
0St. Helena, Saturday, 7 November
Overcast. High 69°, low 50°.
0.09St. Helena, Sunday, 8 November
Climate normal for this date — 60-year average.
0.12St. Helena, Monday, 9 November
Climate normal for this date — 60-year average.
0.19St. Helena, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.13St. Helena, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.09St. Helena, Thursday, 12 November
Climate normal for this date — 60-year average.
0.19St. Helena, Friday, 13 November
Climate normal for this date — 60-year average.
0.07St. Helena, Saturday, 14 November
Climate normal for this date — 60-year average.
0.11St. Helena, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15St. Helena, Monday, 16 November
Climate normal for this date — 60-year average.
0.15St. Helena, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.11St. Helena, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.12St. Helena, Thursday, 19 November
Climate normal for this date — 60-year average.
0.15
St. Helena, Friday, 20 November
Climate normal for this date — 60-year average.
0.18St. Helena, Saturday, 21 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for St. Helena, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in St. Helena, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
56°Weather in Annapolis, MD61°Weather in Atlanta, GA73°Weather in Augusta, ME52°Weather in Austin, TX84°Weather in Baton Rouge, LA85°Weather in Bismarck, ND66°Weather in Boise, ID50°Weather in Boston, MA56°Weather in Carson City, NV52°Weather in Charleston, WV68°Weather in Charlotte Amalie, VI88°Weather in Cheyenne, WY72°Weather in Columbia, SC72°Weather in Columbus, OH67°Weather in Concord, NH58°Weather in Denver, CO76°Weather in Des Moines, IA76°Weather in Dover, DE60°Weather in Frankfort, KY72°Weather in Harrisburg, PA62°Weather in Hartford, CT59°Weather in Helena, MT
35°Weather in Honolulu, HI80°Weather in Indianapolis, IN71°Weather in Jackson, MS82°Weather in Jefferson City, MO79°Weather in Juneau, AK32°Weather in Lansing, MI66°Weather in Lincoln, NE81°Weather in Little Rock, AR79°Weather in Madison, WI72°Weather in Montgomery, AL78°Weather in Montpelier, VT54°Weather in Nashville, TN75°Weather in Oklahoma City, OK78°Weather in Olympia, WA54°Weather in Phoenix, AZ78°Weather in Pierre, SD79°Weather in Providence, RI57°Weather in Raleigh, NC69°Weather in Richmond, VA65°Weather in Sacramento, CA66°Weather in Salem, OR56°Weather in Salt Lake City, UT58°Weather in San Juan, PR91°Weather in Santa Fe, NM67°Weather in Springfield, IL74°Weather in St. Paul, MN74°Weather in Tallahassee, FL79°Weather in Topeka, KS79°Weather in Trenton, NJ61°Weather in Washington, DC63°70°Weather in Cypress, CA71°Weather in Dana Point, CA68°Weather in Spring Valley, CA67°Weather in Pine Valley, CA53°Weather in Rainbow, CA66°Weather in Ramona, CA65°Weather in Rancho San Diego, CA67°Weather in Rancho Santa Fe, CA70°Weather in Valley Center, CA65°Weather in Chula Vista, CA66°Weather in Winter Gardens, CA66°Weather in Carlsbad, CA69°Weather in Imperial Beach, CA67°Weather in Coronado, CA68°Weather in Del Mar, CA69°Weather in Guasti, CA67°Weather in Desert Shores, CA74°Weather in Niland, CA72°Weather in Ocotillo, CA74°