Weather in Altadena, CA
Altadena, Wednesday, 14 October, 17:02
Clear. Feels like 76°. High 77°, low 51°.
Monthly outlook for Altadena, CA: average high 77.4°, average low 60.9°. That is 0.4° below the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 15 October (85.4°), the coolest 14 October (51.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 14 October – 23 October | 74° | 79° | -2.8° |
| 24 October – 2 November | 83.1° | 75.9° | +4° |
| 3 November – 12 November | at normal | 72.8° | — |
October records over 66 years
0Altadena, Thursday, 15 October
Clear. High 85°, low 58°.
0Altadena, Friday, 16 October
Clear. High 80°, low 63°.
0Altadena, Saturday, 17 October
Clear. High 81°, low 62°.
0Altadena, Sunday, 18 October
Clear. High 77°, low 62°.
0Altadena, Monday, 19 October
Clear. High 75°, low 62°.
0Altadena, Tuesday, 20 October
Clear. High 69°, low 57°.
0.5
Altadena, Wednesday, 21 October
Rain. High 63°, low 54°.
0.13Altadena, Thursday, 22 October
Light rain. High 61°, low 53°.
0
Altadena, Friday, 23 October
Mostly clear. High 70°, low 54°.
0Altadena, Saturday, 24 October
Clear. High 80°, low 62°.
0Altadena, Sunday, 25 October
Clear. High 84°, low 65°.
0Altadena, Monday, 26 October
Clear. High 85°, low 67°.
0Altadena, Tuesday, 27 October
Clear. High 83°, low 68°.
0Altadena, Wednesday, 28 October
Clear. High 82°, low 67°.
0Altadena, Thursday, 29 October
Mostly clear. High 84°, low 68°.
0.05Altadena, Friday, 30 October
Climate normal for this date — 60-year average.
0.02Altadena, Saturday, 31 October
Climate normal for this date — 60-year average.
0.04Altadena, Sunday, 1 November
Climate normal for this date — 60-year average.
0.01Altadena, Monday, 2 November
Climate normal for this date — 60-year average.
0Altadena, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Altadena, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.01Altadena, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Altadena, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Altadena, Saturday, 7 November
Climate normal for this date — 60-year average.
0.09
Altadena, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Altadena, Monday, 9 November
Climate normal for this date — 60-year average.
0.03Altadena, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Altadena, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.02Altadena, Thursday, 12 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 Altadena, 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 Altadena, 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
60°Weather in Annapolis, MD76°Weather in Atlanta, GA
79°Weather in Augusta, ME55°Weather in Austin, TX84°Weather in Baton Rouge, LA86°Weather in Bismarck, ND53°Weather in Boise, ID68°Weather in Boston, MA66°Weather in Carson City, NV68°Weather in Charleston, WV77°Weather in Charlotte Amalie, VI82°Weather in Cheyenne, WY40°Weather in Columbia, SC79°Weather in Columbus, OH65°Weather in Concord, NH
61°Weather in Denver, CO47°Weather in Des Moines, IA60°Weather in Dover, DE75°Weather in Frankfort, KY72°Weather in Harrisburg, PA75°Weather in Hartford, CT68°Weather in Helena, MT49°Weather in Honolulu, HI85°Weather in Indianapolis, IN73°Weather in Jackson, MS89°Weather in Jefferson City, MO69°Weather in Juneau, AK41°Weather in Lansing, MI58°Weather in Lincoln, NE60°Weather in Little Rock, AR81°Weather in Madison, WI59°Weather in Montgomery, AL82°Weather in Montpelier, VT53°Weather in Nashville, TN86°Weather in Oklahoma City, OK73°Weather in Olympia, WA66°Weather in Phoenix, AZ76°Weather in Pierre, SD54°Weather in Providence, RI67°Weather in Raleigh, NC77°Weather in Richmond, VA77°Weather in Sacramento, CA80°Weather in Salem, OR71°Weather in Salt Lake City, UT53°Weather in San Juan, PR83°Weather in Santa Fe, NM63°Weather in Springfield, IL75°Weather in St. Paul, MN53°Weather in Tallahassee, FL78°Weather in Topeka, KS62°Weather in Trenton, NJ74°Weather in Washington, DC79°67°Weather in Shingletown, CA70°Weather in Millville, CA87°Weather in Montgomery Creek, CA75°Weather in Palo Cedro, CA88°Weather in Round Mountain, CA74°Weather in Anderson, CA88°Weather in Mineral, CA60°Weather in Rancho Tehama Reserve, CA86°Weather in Corning, CA86°Weather in Delleker, CA68°Weather in Spring Garden, CA67°Weather in Meadow Valley, CA66°Weather in Paxton, CA69°Weather in Prattville, CA69°Weather in Quincy, CA68°Weather in Tobin, CA70°Weather in Twain, CA70°Weather in Taylorsville, CA68°Weather in Durham, CA85°