Weather in Grossmont, CA
Grossmont, Saturday, 31 October, 05:05
Clear. Feels like 58°. High 68°, low 58°.
Monthly outlook for Grossmont, CA: average high 75.4°, average low 61.7°. That is 2.2° above the climate normal for October. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 2 days and 0.5 inches. The warmest day looks like 8 November (85.2°), the coolest 2 November (50.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 31 October – 9 November | 74.8° | 72° | +1.6° |
| 10 November – 19 November | 76.4° | 69.7° | +3.7° |
| 20 November – 29 November | at normal | 67.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — La Mesa (2 mi).
0.47
Grossmont, Sunday, 1 November
Rain. High 68°, low 56°.
0
Grossmont, Monday, 2 November
Clear. High 70°, low 51°.
0Grossmont, Tuesday, 3 November
Clear. High 73°, low 51°.
0.01Grossmont, Wednesday, 4 November
Light rain. High 70°, low 57°.
0
Grossmont, Thursday, 5 November
Mostly clear. High 71°, low 55°.
0Grossmont, Friday, 6 November
Clear. High 77°, low 63°.
0Grossmont, Saturday, 7 November
Clear. High 84°, low 67°.
0Grossmont, Sunday, 8 November
Clear. High 85°, low 69°.
0Grossmont, Monday, 9 November
Mostly clear. High 83°, low 70°.
0
Grossmont, Tuesday, 10 November
Overcast. High 78°, low 68°.
0.29Grossmont, Wednesday, 11 November
Rain. High 70°, low 63°.
0Grossmont, Thursday, 12 November
Clear. High 73°, low 60°.
0
Grossmont, Friday, 13 November
Partly cloudy. High 79°, low 65°.
0Grossmont, Saturday, 14 November
Partly cloudy. High 80°, low 66°.
0Grossmont, Sunday, 15 November
Overcast. High 79°, low 67°.
0.03Grossmont, Monday, 16 November
Climate normal for this date — 60-year average.
0.03Grossmont, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.04Grossmont, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.03Grossmont, Thursday, 19 November
Climate normal for this date — 60-year average.
0.04Grossmont, Friday, 20 November
Climate normal for this date — 60-year average.
0.08Grossmont, Saturday, 21 November
Climate normal for this date — 60-year average.
0.04Grossmont, Sunday, 22 November
Climate normal for this date — 60-year average.
0.02Grossmont, Monday, 23 November
Climate normal for this date — 60-year average.
0.02Grossmont, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.06Grossmont, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.06Grossmont, Thursday, 26 November
Climate normal for this date — 60-year average.
0.04Grossmont, Friday, 27 November
Climate normal for this date — 60-year average.
0.07Grossmont, Saturday, 28 November
Climate normal for this date — 60-year average.
0.08Grossmont, Sunday, 29 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 Grossmont, 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 Grossmont, 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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