Weather in Herndon, WV
Herndon, Saturday, 31 October, 19:22
Overcast. Feels like 59°. High 63°, low 39°.
Monthly outlook for Herndon, WV: average high 59.6°, average low 45.8°. That is 1.3° above the climate normal for October. Precipitation is expected on 8 days (about 2.4 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 3 November (72.2°), the coolest 10 November (37.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 62.1° | 58.9° | +1.8° |
| 10 November – 19 November | 55.4° | 54.4° | +0.6° |
| 20 November – 29 November | at normal | 52° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Rhodell (7 mi).
0Herndon, Sunday, 1 November
Overcast. High 67°, low 41°.
0.02
Herndon, Monday, 2 November
Light rain. High 65°, low 41°.
0
Herndon, Tuesday, 3 November
Partly cloudy. High 72°, low 50°.
0.11Herndon, Wednesday, 4 November
Light rain. High 69°, low 55°.
0.56Herndon, Thursday, 5 November
Rain. High 66°, low 56°.
0.36Herndon, Friday, 6 November
Rain. High 58°, low 50°.
0.02Herndon, Saturday, 7 November
Light rain. High 58°, low 48°.
0.32Herndon, Sunday, 8 November
Rain. High 58°, low 44°.
0.28Herndon, Monday, 9 November
Light rain. High 46°, low 40°.
0.02Herndon, Tuesday, 10 November
Light rain. High 49°, low 38°.
0Herndon, Wednesday, 11 November
Light rain. High 55°, low 40°.
0Herndon, Thursday, 12 November
Light rain. High 52°, low 47°.
0.22Herndon, Friday, 13 November
Light rain. High 62°, low 49°.
0.31Herndon, Saturday, 14 November
Rain. High 65°, low 53°.
0.15Herndon, Sunday, 15 November
Rain. High 50°, low 43°.
0.13
Herndon, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Herndon, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Herndon, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.13Herndon, Thursday, 19 November
Climate normal for this date — 60-year average.
0.06Herndon, Friday, 20 November
Climate normal for this date — 60-year average.
0.13Herndon, Saturday, 21 November
Climate normal for this date — 60-year average.
0.13Herndon, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09Herndon, Monday, 23 November
Climate normal for this date — 60-year average.
0.15Herndon, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.07Herndon, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.16Herndon, Thursday, 26 November
Climate normal for this date — 60-year average.
0.16Herndon, Friday, 27 November
Climate normal for this date — 60-year average.
0.14Herndon, Saturday, 28 November
Climate normal for this date — 60-year average.
0.09Herndon, Sunday, 29 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, WV 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, WV 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
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