Weather in Mountjoy, IL
Mountjoy, Sunday, 18 October, 09:40
Clear. Feels like 45°. High 62°, low 39°.
Monthly outlook for Mountjoy, IL: average high 67.7°, average low 48.7°. That is 4.5° above the climate normal for October. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 30 October (80°), the coolest 2 November (38.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 68.5° | 60.6° | +4.4° |
| 28 October – 6 November | 66.4° | 56.8° | +5.3° |
| 7 November – 16 November | at normal | 51.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Shirley (14 mi).
0Mountjoy, Monday, 19 October
Clear. High 67°, low 38°.
0Mountjoy, Tuesday, 20 October
Clear. High 67°, low 43°.
0Mountjoy, Wednesday, 21 October
Clear. High 68°, low 44°.
0Mountjoy, Thursday, 22 October
Clear. High 69°, low 47°.
0Mountjoy, Friday, 23 October
Clear. High 67°, low 49°.
0
Mountjoy, Saturday, 24 October
Overcast. High 78°, low 54°.
0.04
Mountjoy, Sunday, 25 October
Light rain. High 66°, low 53°.
0.01Mountjoy, Monday, 26 October
Light rain. High 68°, low 52°.
0Mountjoy, Tuesday, 27 October
Overcast. High 73°, low 57°.
0.17Mountjoy, Wednesday, 28 October
Light rain. High 69°, low 58°.
0.24Mountjoy, Thursday, 29 October
Light rain. High 71°, low 61°.
0.25Mountjoy, Friday, 30 October
Rain. High 80°, low 58°.
0.2Mountjoy, Saturday, 31 October
Light rain. High 69°, low 48°.
0Mountjoy, Sunday, 1 November
Clear. High 51°, low 39°.
0Mountjoy, Monday, 2 November
Clear. High 59°, low 38°.
0.09
Mountjoy, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Mountjoy, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.13Mountjoy, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Mountjoy, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Mountjoy, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04
Mountjoy, Sunday, 8 November
Climate normal for this date — 60-year average.
0.14
Mountjoy, Monday, 9 November
Climate normal for this date — 60-year average.
0.16Mountjoy, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Mountjoy, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Mountjoy, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Mountjoy, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Mountjoy, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Mountjoy, Sunday, 15 November
Climate normal for this date — 60-year average.
0.07Mountjoy, Monday, 16 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 Mountjoy, IL 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 Mountjoy, IL 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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