Weather in Greencastle, MO
Greencastle, Sunday, 11 October, 10:11
Clear. Feels like 69°. High 84°, low 59°.
Monthly outlook for Greencastle, MO: average high 69.2°, average low 52.1°. That is 4.1° above the climate normal for October. Precipitation is expected on 6 days (about 2.0 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 12 October (90.6°), the coolest 17 October (32°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 69.5° | 62.8° | +3.7° |
| 21 October – 30 October | 68.8° | 59.2° | +5.3° |
| 31 October – 9 November | at normal | 54° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Lemons (14 mi).
0
Greencastle, Monday, 12 October
Overcast. High 91°, low 67°.
0.45
Greencastle, Tuesday, 13 October
Heavy rain. High 86°, low 70°.
0.18Greencastle, Wednesday, 14 October
Rain. High 70°, low 63°.
1.05Greencastle, Thursday, 15 October
Heavy rain. High 73°, low 62°.
0Greencastle, Friday, 16 October
Clear. High 59°, low 49°.
0Greencastle, Saturday, 17 October
Clear. High 48°, low 32°.
0Greencastle, Sunday, 18 October
Clear. High 57°, low 33°.
0Greencastle, Monday, 19 October
Clear. High 63°, low 42°.
0
Greencastle, Tuesday, 20 October
Partly cloudy. High 66°, low 44°.
0.07Greencastle, Wednesday, 21 October
Light rain. High 62°, low 50°.
0.07Greencastle, Thursday, 22 October
Light rain. High 72°, low 54°.
0Greencastle, Friday, 23 October
Overcast. High 75°, low 56°.
0.02Greencastle, Saturday, 24 October
Light rain. High 74°, low 58°.
0.15Greencastle, Sunday, 25 October
Light rain. High 75°, low 52°.
0Greencastle, Monday, 26 October
Overcast. High 54°, low 43°.
0.08Greencastle, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.06Greencastle, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.08Greencastle, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11
Greencastle, Friday, 30 October
Climate normal for this date — 60-year average.
0.16Greencastle, Saturday, 31 October
Climate normal for this date — 60-year average.
0.2Greencastle, Sunday, 1 November
Climate normal for this date — 60-year average.
0.08Greencastle, Monday, 2 November
Climate normal for this date — 60-year average.
0.1Greencastle, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.11Greencastle, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.06Greencastle, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Greencastle, Friday, 6 November
Climate normal for this date — 60-year average.
0.02
Greencastle, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Greencastle, Sunday, 8 November
Climate normal for this date — 60-year average.
0.13Greencastle, Monday, 9 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 Greencastle, 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 Greencastle, 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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