Weather in Sunnyvale, TX
Sunnyvale, Tuesday, 20 October, 14:44
Clear. Feels like 80°. High 80°, low 53°.
Monthly outlook for Sunnyvale, TX: average high 73.5°, average low 55.5°. That is 0.6° above the climate normal for October. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 23 October (81.8°), the coolest 28 October (43.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 75.9° | 73.9° | +1.1° |
| 30 October – 8 November | 69.5° | 69.4° | +0.1° |
| 9 November – 18 November | at normal | 66.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Mesquite (3 mi).
0Sunnyvale, Wednesday, 21 October
Clear. High 81°, low 52°.
0Sunnyvale, Thursday, 22 October
Clear. High 81°, low 59°.
0Sunnyvale, Friday, 23 October
Clear. High 82°, low 62°.
0
Sunnyvale, Saturday, 24 October
Overcast. High 81°, low 61°.
0Sunnyvale, Sunday, 25 October
Overcast. High 79°, low 63°.
0Sunnyvale, Monday, 26 October
Overcast. High 80°, low 61°.
0.54
Sunnyvale, Tuesday, 27 October
Rain. High 68°, low 48°.
0Sunnyvale, Wednesday, 28 October
Overcast. High 61°, low 43°.
0Sunnyvale, Thursday, 29 October
Overcast. High 66°, low 49°.
0.17Sunnyvale, Friday, 30 October
Rain. High 64°, low 54°.
0.32Sunnyvale, Saturday, 31 October
Rain. High 58°, low 52°.
0Sunnyvale, Sunday, 1 November
Overcast. High 66°, low 51°.
0
Sunnyvale, Monday, 2 November
Partly cloudy. High 73°, low 55°.
0Sunnyvale, Tuesday, 3 November
Overcast. High 78°, low 57°.
0.01Sunnyvale, Wednesday, 4 November
Light rain. High 78°, low 67°.
0.13Sunnyvale, Thursday, 5 November
Climate normal for this date — 60-year average.
0.12
Sunnyvale, Friday, 6 November
Climate normal for this date — 60-year average.
0.12Sunnyvale, Saturday, 7 November
Climate normal for this date — 60-year average.
0.15Sunnyvale, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Sunnyvale, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Sunnyvale, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.09Sunnyvale, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Sunnyvale, Thursday, 12 November
Climate normal for this date — 60-year average.
0.08Sunnyvale, Friday, 13 November
Climate normal for this date — 60-year average.
0.05Sunnyvale, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Sunnyvale, Sunday, 15 November
Climate normal for this date — 60-year average.
0.11Sunnyvale, Monday, 16 November
Climate normal for this date — 60-year average.
0.14Sunnyvale, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.1Sunnyvale, Wednesday, 18 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 Sunnyvale, TX 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 Sunnyvale, TX 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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