Weather in Firma, MO
Firma, Tuesday, 13 October, 04:03
Clear. Feels like 69°. High 94°, low 68°.
Monthly outlook for Firma, MO: average high 71.9°, average low 55.8°. That is 4° above the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 13 October (93.7°), the coolest 17 October (44.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 13 October – 22 October | 75.8° | 66.1° | +5.3° |
| 23 October – 1 November | 65.5° | 62.2° | +1.9° |
| 2 November – 11 November | at normal | 57.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — O'Fallon (8 mi).
0.36
Firma, Wednesday, 14 October
Rain. High 83°, low 65°.
0.43Firma, Thursday, 15 October
Heavy rain. High 83°, low 69°.
0.01Firma, Friday, 16 October
Light rain. High 66°, low 52°.
0
Firma, Saturday, 17 October
Clear. High 60°, low 44°.
0
Firma, Sunday, 18 October
Overcast. High 66°, low 46°.
0Firma, Monday, 19 October
Overcast. High 71°, low 57°.
0.07Firma, Tuesday, 20 October
Light rain. High 75°, low 61°.
0Firma, Wednesday, 21 October
Clear. High 78°, low 62°.
0Firma, Thursday, 22 October
Overcast. High 82°, low 68°.
0.46Firma, Friday, 23 October
Rain. High 74°, low 58°.
0Firma, Saturday, 24 October
Overcast. High 62°, low 56°.
0.02Firma, Sunday, 25 October
Light rain. High 63°, low 47°.
0Firma, Monday, 26 October
Clear. High 62°, low 47°.
0Firma, Tuesday, 27 October
Overcast. High 64°, low 45°.
0Firma, Wednesday, 28 October
Overcast. High 68°, low 48°.
0.13
Firma, Thursday, 29 October
Climate normal for this date — 60-year average.
0.12Firma, Friday, 30 October
Climate normal for this date — 60-year average.
0.16
Firma, Saturday, 31 October
Climate normal for this date — 60-year average.
0.19Firma, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Firma, Monday, 2 November
Climate normal for this date — 60-year average.
0.12Firma, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.15Firma, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.17Firma, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09Firma, Friday, 6 November
Climate normal for this date — 60-year average.
0.07
Firma, Saturday, 7 November
Climate normal for this date — 60-year average.
0.03Firma, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11Firma, Monday, 9 November
Climate normal for this date — 60-year average.
0.12Firma, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.09Firma, 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 Firma, 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 Firma, 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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