Weather in Irmo, SC
Irmo, Sunday, 11 October, 11:23
Overcast. Feels like 72°. High 73°, low 69°.
Monthly outlook for Irmo, SC: average high 74.4°, average low 52.3°. That is 1.2° above the climate normal for October. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 3 days and 1.3 inches. The warmest day looks like 16 October (86.4°), the coolest 18 October (35.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 75.1° | 73.1° | +1.1° |
| 21 October – 30 October | 73.2° | 70.2° | +1.7° |
| 31 October – 9 November | at normal | 67.4° | — |
October records over 66 years
0
Irmo, Monday, 12 October
Clear. High 82°, low 64°.
0Irmo, Tuesday, 13 October
Clear. High 84°, low 60°.
0Irmo, Wednesday, 14 October
Clear. High 86°, low 64°.
0Irmo, Thursday, 15 October
Clear. High 86°, low 65°.
0Irmo, Friday, 16 October
Clear. High 86°, low 68°.
0Irmo, Saturday, 17 October
Overcast. High 64°, low 44°.
0Irmo, Sunday, 18 October
Clear. High 56°, low 35°.
0Irmo, Monday, 19 October
Clear. High 63°, low 37°.
0Irmo, Tuesday, 20 October
Clear. High 70°, low 41°.
0Irmo, Wednesday, 21 October
Clear. High 70°, low 44°.
0Irmo, Thursday, 22 October
Clear. High 70°, low 49°.
0Irmo, Friday, 23 October
Clear. High 70°, low 49°.
0Irmo, Saturday, 24 October
Overcast. High 74°, low 45°.
0Irmo, Sunday, 25 October
Clear. High 75°, low 50°.
0Irmo, Monday, 26 October
Clear. High 81°, low 52°.
0.11
Irmo, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.09Irmo, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Irmo, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11Irmo, Friday, 30 October
Climate normal for this date — 60-year average.
0.07Irmo, Saturday, 31 October
Climate normal for this date — 60-year average.
0.1Irmo, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Irmo, Monday, 2 November
Climate normal for this date — 60-year average.
0.04Irmo, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Irmo, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.06Irmo, Thursday, 5 November
Climate normal for this date — 60-year average.
0.05
Irmo, Friday, 6 November
Climate normal for this date — 60-year average.
0.11Irmo, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Irmo, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11Irmo, 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 Irmo, SC 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 Irmo, SC 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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