Weather in Irwindale, CA
Irwindale, Saturday, 10 October, 16:07
Light rain. Feels like 78°. High 81°, low 69°.
Monthly outlook for Irwindale, CA: average high 84.1°, average low 67°. That is 2° above the climate normal for October. Precipitation is expected on 4 days (about 1.7 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 17 October (96°), the coolest 13 October (45.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 80.3° | 81° | -0.4° |
| 20 October – 29 October | 90.4° | 78.7° | +6.5° |
| 30 October – 8 November | at normal | 75.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — South Monrovia Island (2 mi).
0.75Irwindale, Sunday, 11 October
Rain. High 69°, low 57°.
0.73Irwindale, Monday, 12 October
Rain. High 58°, low 52°.
0.08Irwindale, Tuesday, 13 October
Light rain. High 65°, low 46°.
0
Irwindale, Wednesday, 14 October
Clear. High 73°, low 48°.
0Irwindale, Thursday, 15 October
Clear. High 82°, low 53°.
0Irwindale, Friday, 16 October
Clear. High 92°, low 57°.
0Irwindale, Saturday, 17 October
Clear. High 96°, low 77°.
0Irwindale, Sunday, 18 October
Clear. High 95°, low 79°.
0Irwindale, Monday, 19 October
Clear. High 92°, low 77°.
0Irwindale, Tuesday, 20 October
Clear. High 90°, low 76°.
0Irwindale, Wednesday, 21 October
Clear. High 89°, low 73°.
0Irwindale, Thursday, 22 October
Clear. High 93°, low 77°.
0Irwindale, Friday, 23 October
Clear. High 96°, low 79°.
0
Irwindale, Saturday, 24 October
Overcast. High 91°, low 78°.
0.07Irwindale, Sunday, 25 October
Light rain. High 83°, low 73°.
0.01
Irwindale, Monday, 26 October
Climate normal for this date — 60-year average.
0.05Irwindale, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.01Irwindale, Wednesday, 28 October
Climate normal for this date — 60-year average.
0Irwindale, Thursday, 29 October
Climate normal for this date — 60-year average.
0.05Irwindale, Friday, 30 October
Climate normal for this date — 60-year average.
0.02Irwindale, Saturday, 31 October
Climate normal for this date — 60-year average.
0.03Irwindale, Sunday, 1 November
Climate normal for this date — 60-year average.
0.02Irwindale, Monday, 2 November
Climate normal for this date — 60-year average.
0Irwindale, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.02Irwindale, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.01Irwindale, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Irwindale, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Irwindale, Saturday, 7 November
Climate normal for this date — 60-year average.
0.08
Irwindale, 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 Irwindale, CA 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 Irwindale, CA 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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