Weather in Herndon, MO
Herndon, Sunday, 25 October, 03:38
Clear. Feels like 53°. High 79°, low 54°.
Monthly outlook for Herndon, MO: average high 72.2°, average low 54.3°. That is 7.3° above the climate normal for October. Precipitation is expected on 5 days (about 1.4 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 29 October (79.6°), the coolest 4 November (41.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 25 October – 3 November | 74.8° | 60.2° | +8.1° |
| 4 November – 13 November | 67.9° | 55.5° | +6.9° |
| 14 November – 23 November | at normal | 52.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Marshall (8 mi).
0
Herndon, Monday, 26 October
Overcast. High 77°, low 55°.
0.01
Herndon, Tuesday, 27 October
Light rain. High 72°, low 57°.
0.14Herndon, Wednesday, 28 October
Rain. High 78°, low 59°.
0
Herndon, Thursday, 29 October
Clear. High 80°, low 62°.
0.03Herndon, Friday, 30 October
Light rain. High 77°, low 63°.
0.46Herndon, Saturday, 31 October
Rain. High 72°, low 61°.
0.4Herndon, Sunday, 1 November
Rain. High 69°, low 60°.
0.19Herndon, Monday, 2 November
Light rain. High 79°, low 66°.
0
Herndon, Tuesday, 3 November
Mostly clear. High 64°, low 47°.
0
Herndon, Wednesday, 4 November
Partly cloudy. High 62°, low 41°.
0Herndon, Thursday, 5 November
Overcast. High 67°, low 45°.
0Herndon, Friday, 6 November
Overcast. High 70°, low 48°.
0Herndon, Saturday, 7 November
Partly cloudy. High 66°, low 51°.
0Herndon, Sunday, 8 November
Overcast. High 75°, low 47°.
0.13Herndon, Monday, 9 November
Light rain. High 68°, low 54°.
0.09Herndon, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Herndon, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.08Herndon, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Herndon, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Herndon, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Herndon, Sunday, 15 November
Climate normal for this date — 60-year average.
0.07Herndon, Monday, 16 November
Climate normal for this date — 60-year average.
0.11Herndon, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07Herndon, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Herndon, Thursday, 19 November
Climate normal for this date — 60-year average.
0.12Herndon, Friday, 20 November
Climate normal for this date — 60-year average.
0.07Herndon, Saturday, 21 November
Climate normal for this date — 60-year average.
0.07Herndon, Sunday, 22 November
Climate normal for this date — 60-year average.
0.06Herndon, Monday, 23 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, MO 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, MO 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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