As of 15:13 PDT

Weather in Sunnyvale, CA

75°Current weather

Sunnyvale, Sunday, 25 October, 15:13

Overcast. Feels like 74°. High 75°, low 47°.

Pressure30.00 inHg
Wind9.2 mph NW
Humidity42%
Visibility6.2 mi
Dew point52°

Monthly outlook for Sunnyvale, CA: average high 68.3°, average low 51.4°. That is 0.1° above the climate normal for October. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 25 October (75.1°), the coolest 26 October (44.5°).

68.3°/51.4°
Average high / low
+0.1°
Above normal
3 / 2
Wet days / normal
0.9 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
25 October – 3 November67.5°69.3°-1°
4 November – 13 November69.6°65.5°+2.3°
14 November – 23 Novemberat normal62.1°—

October records over 66 years

103.1°2 October 2024All-time high
35.2°29 October 1971All-time low
Mon, 2672° / 44°0Mostly clear
72 °Mostly clear

Sunnyvale, Monday, 26 October

Mostly clear. High 72°, low 44°.

Pressure30.18 inHg
Wind2.7 mph NW
Humidity69%
Visibility2.1 mi
Dew point53°
Tue, 2766° / 47°0Partly cloudy
66 °Partly cloudy

Sunnyvale, Tuesday, 27 October

Partly cloudy. High 66°, low 47°.

Pressure30.09 inHg
Wind3.7 mph NW
Humidity53%
Visibility6.2 mi
Dew point46°
Wed, 2866° / 47°0Overcast
66 °Overcast

Sunnyvale, Wednesday, 28 October

Overcast. High 66°, low 47°.

Pressure30.03 inHg
Wind3.3 mph NW
Humidity60%
Visibility6.2 mi
Dew point48°
Thu, 2969° / 53°0Overcast
69 °Overcast

Sunnyvale, Thursday, 29 October

Overcast. High 69°, low 53°.

Pressure29.91 inHg
Wind1.3 mph N
Humidity55%
Visibility6.2 mi
Dew point49°
Fri, 3067° / 47°0Clear
67 °Clear

Sunnyvale, Friday, 30 October

Clear. High 67°, low 47°.

Pressure29.94 inHg
Wind6.9 mph NW
Humidity70%
Visibility—
Dew point49°
Sat, 3163° / 50°0.02Light rain
63 °Light rain

Sunnyvale, Saturday, 31 October

Light rain. High 63°, low 50°.

Pressure29.94 inHg
Wind5.5 mph N
Humidity54%
Visibility—
Dew point42°
Sun, 0162° / 51°0.29Rain
62 °Rain

Sunnyvale, Sunday, 1 November

Rain. High 62°, low 51°.

Pressure29.80 inHg
Wind10.2 mph NW
Humidity67%
Visibility—
Dew point45°
Mon, 0268° / 51°0Overcast
68 °Overcast

Sunnyvale, Monday, 2 November

Overcast. High 68°, low 51°.

Pressure30.03 inHg
Wind4.2 mph NW
Humidity52%
Visibility—
Dew point42°
Tue, 0368° / 53°0Overcast
68 °Overcast

Sunnyvale, Tuesday, 3 November

Overcast. High 68°, low 53°.

Pressure30.06 inHg
Wind6.1 mph NW
Humidity50%
Visibility—
Dew point43°
Wed, 0462° / 54°0.3Rain
62 °Rain

Sunnyvale, Wednesday, 4 November

Rain. High 62°, low 54°.

Pressure29.94 inHg
Wind13.1 mph S
Humidity62%
Visibility—
Dew point46°
Thu, 0570° / 56°0.33Rain
70 °Rain

Sunnyvale, Thursday, 5 November

Rain. High 70°, low 56°.

Pressure29.94 inHg
Wind9.5 mph S
Humidity72%
Visibility—
Dew point54°
Fri, 0670° / 55°0Overcast
70 °Overcast

Sunnyvale, Friday, 6 November

Overcast. High 70°, low 55°.

Pressure30.06 inHg
Wind7 mph NW
Humidity54%
Visibility—
Dew point48°
Sat, 0769° / 55°0Clear
69 °Clear

Sunnyvale, Saturday, 7 November

Clear. High 69°, low 55°.

Pressure30.09 inHg
Wind5.9 mph N
Humidity61%
Visibility—
Dew point49°
Sun, 0873° / 55°0Mostly clear
73 °Mostly clear

Sunnyvale, Sunday, 8 November

Mostly clear. High 73°, low 55°.

Pressure30.09 inHg
Wind3.9 mph NW
Humidity35%
Visibility—
Dew point36°
Mon, 0973° / 57°0Overcast
73 °Overcast

Sunnyvale, Monday, 9 November

Overcast. High 73°, low 57°.

Pressure30.03 inHg
Wind4.7 mph NW
Humidity30%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 1064° / 50°0.08Climate normal
64 °Climate normal

Sunnyvale, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high64°
Average low50°
Average precipitation0.08 in
Chance of precipitation28%
Record high80° (1990)
Record low39° (2020)
Wed, 1164° / 51°0.07Climate normal
64 °Climate normal

Sunnyvale, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high64°
Average low51°
Average precipitation0.07 in
Chance of precipitation23%
Record high82° (1990)
Record low40° (1985)
Thu, 1264° / 50°0.06Climate normal
64 °Climate normal

Sunnyvale, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high64°
Average low50°
Average precipitation0.06 in
Chance of precipitation17%
Record high81° (1990)
Record low41° (1985)
Fri, 1364° / 50°0.13Climate normal
64 °Climate normal

Sunnyvale, Friday, 13 November

Climate normal for this date — 60-year average.

Average high64°
Average low50°
Average precipitation0.13 in
Chance of precipitation28%
Record high79° (1995)
Record low40° (1964)
Sat, 1464° / 50°0.06Climate normal
64 °Climate normal

Sunnyvale, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high64°
Average low50°
Average precipitation0.06 in
Chance of precipitation23%
Record high76° (1992)
Record low39° (1964)
Sun, 1564° / 49°0.06Climate normal
64 °Climate normal

Sunnyvale, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high64°
Average low49°
Average precipitation0.06 in
Chance of precipitation20%
Record high78° (2008)
Record low35° (1964)
Mon, 1663° / 50°0.1Climate normal
63 °Climate normal

Sunnyvale, Monday, 16 November

Climate normal for this date — 60-year average.

Average high63°
Average low50°
Average precipitation0.1 in
Chance of precipitation23%
Record high80° (2008)
Record low37° (1964)
Tue, 1763° / 50°0.11Climate normal
63 °Climate normal

Sunnyvale, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high63°
Average low50°
Average precipitation0.11 in
Chance of precipitation27%
Record high81° (2008)
Record low39° (1975)
Wed, 1863° / 49°0.06Climate normal
63 °Climate normal

Sunnyvale, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high63°
Average low49°
Average precipitation0.06 in
Chance of precipitation20%
Record high78° (2005)
Record low36° (1994)
Thu, 1962° / 48°0.03Climate normal
62 °Climate normal

Sunnyvale, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high62°
Average low48°
Average precipitation0.03 in
Chance of precipitation22%
Record high78° (1989)
Record low38° (1994)
Fri, 2062° / 48°0.09Climate normal
62 °Climate normal

Sunnyvale, Friday, 20 November

Climate normal for this date — 60-year average.

Average high62°
Average low48°
Average precipitation0.09 in
Chance of precipitation25%
Record high76° (1989)
Record low40° (1964)
Sat, 2160° / 48°0.07Climate normal
60 °Climate normal

Sunnyvale, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high60°
Average low48°
Average precipitation0.07 in
Chance of precipitation25%
Record high74° (2002)
Record low37° (1985)
Sun, 2261° / 48°0.07Climate normal
61 °Climate normal

Sunnyvale, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high61°
Average low48°
Average precipitation0.07 in
Chance of precipitation28%
Record high74° (2005)
Record low40° (1985)
Mon, 2361° / 47°0.04Climate normal
61 °Climate normal

Sunnyvale, Monday, 23 November

Climate normal for this date — 60-year average.

Average high61°
Average low47°
Average precipitation0.04 in
Chance of precipitation15%
Record high73° (1995)
Record low39° (1994)

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, 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 Sunnyvale, 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.