Weather in Herndon, WV
Herndon, Tuesday, 10 November, 20:27
Clear. Feels like 44°. High 65°, low 34°.
Monthly outlook for Herndon, WV: average high 48.9°, average low 31.1°. That is 2.6° below the climate normal for November. Precipitation is expected on 4 days (about 1.4 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 11 November (65.9°), the coolest 24 November (18°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 November – 19 November | 50.1° | 54.4° | -2.4° |
| 20 November – 29 November | 46.7° | 52° | -2.9° |
| 30 November – 9 December | at normal | 47.8° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Rhodell (7 mi).
0
Herndon, Wednesday, 11 November
Clear. High 66°, low 36°.
0.31
Herndon, Thursday, 12 November
Rain. High 50°, low 38°.
0.13
Herndon, Friday, 13 November
Snow. High 44°, low 33°.
0
Herndon, Saturday, 14 November
Overcast. High 38°, low 27°.
0
Herndon, Sunday, 15 November
Mostly clear. High 42°, low 27°.
0Herndon, Monday, 16 November
Overcast. High 45°, low 25°.
0
Herndon, Tuesday, 17 November
Partly cloudy. High 48°, low 29°.
0Herndon, Wednesday, 18 November
Clear. High 48°, low 29°.
0Herndon, Thursday, 19 November
Partly cloudy. High 56°, low 31°.
0Herndon, Friday, 20 November
Overcast. High 54°, low 38°.
0Herndon, Saturday, 21 November
Clear. High 60°, low 38°.
0.44Herndon, Sunday, 22 November
Rain. High 59°, low 53°.
0.57Herndon, Monday, 23 November
Rain. High 44°, low 23°.
0Herndon, Tuesday, 24 November
Clear. High 28°, low 18°.
0Herndon, Wednesday, 25 November
Clear. High 36°, low 19°.
0.16
Herndon, 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.
0.19Herndon, Monday, 30 November
Climate normal for this date — 60-year average.
0.19Herndon, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.11Herndon, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.11Herndon, Thursday, 3 December
Climate normal for this date — 60-year average.
0.16Herndon, Friday, 4 December
Climate normal for this date — 60-year average.
0.13Herndon, Saturday, 5 December
Climate normal for this date — 60-year average.
0.13Herndon, Sunday, 6 December
Climate normal for this date — 60-year average.
0.13Herndon, Monday, 7 December
Climate normal for this date — 60-year average.
0.11Herndon, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.19Herndon, Wednesday, 9 December
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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