Weather in Derby, MO
Derby, Saturday, 10 October, 18:32
Overcast. Feels like 70°. High 79°, low 55°.
Monthly outlook for Derby, MO: average high 67.8°, average low 47.6°. That is 0.7° above the climate normal for October. Precipitation is expected on 4 days (about 1.4 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 13 October (89.7°), the coolest 18 October (26.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 72.1° | 67.4° | +2.6° |
| 20 October – 29 October | 60.6° | 63.8° | -1.7° |
| 30 October – 8 November | at normal | 59.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Potosi (15 mi).
0
Derby, Sunday, 11 October
Clear. High 87°, low 46°.
0Derby, Monday, 12 October
Clear. High 89°, low 58°.
0Derby, Tuesday, 13 October
Clear. High 90°, low 68°.
0.4
Derby, Wednesday, 14 October
Rain. High 78°, low 71°.
0.85Derby, Thursday, 15 October
Rain. High 85°, low 69°.
0.06Derby, Friday, 16 October
Light rain. High 70°, low 45°.
0Derby, Saturday, 17 October
Overcast. High 41°, low 33°.
0Derby, Sunday, 18 October
Clear. High 48°, low 27°.
0
Derby, Monday, 19 October
Mostly clear. High 55°, low 31°.
0Derby, Tuesday, 20 October
Clear. High 63°, low 36°.
0Derby, Wednesday, 21 October
Clear. High 67°, low 42°.
0
Derby, Thursday, 22 October
Partly cloudy. High 69°, low 46°.
0.11Derby, Friday, 23 October
Light rain. High 53°, low 45°.
0Derby, Saturday, 24 October
Overcast. High 51°, low 43°.
0Derby, Sunday, 25 October
Light rain. High 62°, low 47°.
0.16Derby, Monday, 26 October
Climate normal for this date — 60-year average.
0.12Derby, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.07Derby, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.15Derby, Thursday, 29 October
Climate normal for this date — 60-year average.
0.12Derby, Friday, 30 October
Climate normal for this date — 60-year average.
0.16
Derby, Saturday, 31 October
Climate normal for this date — 60-year average.
0.15Derby, Sunday, 1 November
Climate normal for this date — 60-year average.
0.11Derby, Monday, 2 November
Climate normal for this date — 60-year average.
0.11Derby, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.14Derby, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.17Derby, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09Derby, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Derby, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Derby, Sunday, 8 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 Derby, 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 Derby, 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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