Weather in Union City, CA
Union City, Thursday, 29 October, 20:25
Partly cloudy. Feels like 59°. High 68°, low 48°.
Monthly outlook for Union City, CA: average high 64.9°, average low 50.7°. That is 0.7° below the climate normal for October. Precipitation is expected on 5 days (about 2.8 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 3 November (72.1°), the coolest 31 October (44.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 29 October – 7 November | 66.5° | 67.5° | -0.5° |
| 8 November – 17 November | 62.1° | 63.7° | -0.9° |
| 18 November – 27 November | at normal | 60.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Hayward (4 mi).
0
Union City, Friday, 30 October
Clear. High 68°, low 48°.
0.01
Union City, Saturday, 31 October
Light rain. High 66°, low 45°.
0.07Union City, Sunday, 1 November
Light rain. High 66°, low 51°.
0
Union City, Monday, 2 November
Overcast. High 68°, low 47°.
0
Union City, Tuesday, 3 November
Mostly clear. High 72°, low 46°.
0Union City, Wednesday, 4 November
Overcast. High 66°, low 55°.
0.04Union City, Thursday, 5 November
Light rain. High 63°, low 54°.
0Union City, Friday, 6 November
Clear. High 66°, low 48°.
0
Union City, Saturday, 7 November
Partly cloudy. High 63°, low 50°.
0Union City, Sunday, 8 November
Overcast. High 66°, low 55°.
0.24Union City, Monday, 9 November
Rain. High 63°, low 52°.
1.81Union City, Tuesday, 10 November
Heavy rain. High 63°, low 56°.
0.03Union City, Wednesday, 11 November
Light rain. High 64°, low 55°.
0.51Union City, Thursday, 12 November
Rain. High 57°, low 52°.
0.08Union City, Friday, 13 November
Light rain. High 59°, low 49°.
0.06Union City, Saturday, 14 November
Climate normal for this date — 60-year average.
0.05Union City, Sunday, 15 November
Climate normal for this date — 60-year average.
0.09Union City, Monday, 16 November
Climate normal for this date — 60-year average.
0.11Union City, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07Union City, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.04Union City, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1Union City, Friday, 20 November
Climate normal for this date — 60-year average.
0.08Union City, Saturday, 21 November
Climate normal for this date — 60-year average.
0.08Union City, Sunday, 22 November
Climate normal for this date — 60-year average.
0.06Union City, Monday, 23 November
Climate normal for this date — 60-year average.
0.07Union City, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.04Union City, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.06Union City, Thursday, 26 November
Climate normal for this date — 60-year average.
0.07Union City, Friday, 27 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 Union City, 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 Union City, 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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