Weather in Herndon, CA
Herndon, Tuesday, 13 October, 05:32
Clear. Feels like 49°. High 77°, low 49°.
Monthly outlook for Herndon, CA: average high 78.2°, average low 51.6°. That is 0.5° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 17 October (92.7°), the coolest 21 October (45.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 13 October – 22 October | 80.9° | 78.5° | +1.3° |
| 23 October – 1 November | 73.7° | 73.6° | +0.1° |
| 2 November – 11 November | at normal | 69.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Fresno (8 mi).
0
Herndon, Wednesday, 14 October
Clear. High 81°, low 48°.
0Herndon, Thursday, 15 October
Clear. High 88°, low 52°.
0Herndon, Friday, 16 October
Clear. High 91°, low 57°.
0Herndon, Saturday, 17 October
Clear. High 93°, low 59°.
0Herndon, Sunday, 18 October
Clear. High 90°, low 61°.
0
Herndon, Monday, 19 October
Partly cloudy. High 76°, low 55°.
0Herndon, Tuesday, 20 October
Clear. High 69°, low 47°.
0Herndon, Wednesday, 21 October
Clear. High 70°, low 45°.
0Herndon, Thursday, 22 October
Clear. High 75°, low 50°.
0Herndon, Friday, 23 October
Clear. High 75°, low 50°.
0Herndon, Saturday, 24 October
Clear. High 77°, low 49°.
0Herndon, Sunday, 25 October
Clear. High 79°, low 52°.
0
Herndon, Monday, 26 October
Mostly clear. High 72°, low 49°.
0
Herndon, Tuesday, 27 October
Overcast. High 68°, low 52°.
0Herndon, Wednesday, 28 October
Overcast. High 72°, low 51°.
0.06Herndon, Thursday, 29 October
Climate normal for this date — 60-year average.
0.09Herndon, Friday, 30 October
Climate normal for this date — 60-year average.
0.01Herndon, Saturday, 31 October
Climate normal for this date — 60-year average.
0.02Herndon, Sunday, 1 November
Climate normal for this date — 60-year average.
0.02Herndon, Monday, 2 November
Climate normal for this date — 60-year average.
0.03Herndon, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Herndon, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.02Herndon, Thursday, 5 November
Climate normal for this date — 60-year average.
0.04Herndon, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Herndon, Saturday, 7 November
Climate normal for this date — 60-year average.
0.09Herndon, Sunday, 8 November
Climate normal for this date — 60-year average.
0.06Herndon, Monday, 9 November
Climate normal for this date — 60-year average.
0.05Herndon, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Herndon, Wednesday, 11 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 Herndon, 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 Herndon, 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, MD58°Weather in Atlanta, GA62°Weather in Augusta, ME41°Weather in Austin, TX79°Weather in Baton Rouge, LA67°Weather in Bismarck, ND41°Weather in Boise, ID38°Weather in Boston, MA53°Weather in Carson City, NV31°Weather in Charleston, WV56°Weather in Charlotte Amalie, VI82°Weather in Cheyenne, WY46°Weather in Columbia, SC57°Weather in Columbus, OH65°Weather in Concord, NH48°Weather in Denver, CO52°Weather in Des Moines, IA55°Weather in Dover, DE58°Weather in Frankfort, KY63°Weather in Harrisburg, PA55°Weather in Hartford, CT58°Weather in Helena, MT28°Weather in Honolulu, HI75°Weather in Indianapolis, IN65°Weather in Jackson, MS64°Weather in Jefferson City, MO64°Weather in Juneau, AK37°Weather in Lansing, MI69°Weather in Lincoln, NE51°Weather in Little Rock, AR68°Weather in Madison, WI65°Weather in Montgomery, AL62°Weather in Montpelier, VT50°Weather in Nashville, TN60°Weather in Oklahoma City, OK74°Weather in Olympia, WA
46°Weather in Phoenix, AZ
66°Weather in Pierre, SD45°Weather in Providence, RI56°Weather in Raleigh, NC58°Weather in Richmond, VA57°Weather in Sacramento, CA49°Weather in Salem, OR42°Weather in Salt Lake City, UT46°Weather in San Juan, PR80°Weather in Santa Fe, NM49°Weather in Springfield, IL67°Weather in St. Paul, MN54°Weather in Tallahassee, FL63°Weather in Topeka, KS66°Weather in Trenton, NJ55°Weather in Washington, DC57°50°Weather in Sanborn, CA51°Weather in Sandyland, CA55°Weather in Santa Susana Knolls, CA48°Weather in Schilling, CA45°Weather in Seguro, CA53°Weather in Seminole Hot Springs, CA51°Weather in Serrano, CA47°Weather in Seven Oaks, CA36°Weather in Shady Dell, CA55°Weather in Shell, CA49°Weather in Shirley, CA48°Weather in Shirley Meadows, CA33°Weather in Siberia, CA53°Weather in Sierra Heights, CA49°Weather in Silt, CA46°Weather in Skyland, CA37°Weather in Sleepy Valley, CA49°Weather in Smith Mill, CA35°Weather in Soboba Hot Springs, CA52°