Metar & Taf

Visual decoder

Weather in Santa Clara County

Calculated from weather data of Norman Y Mineta San Jose International Airport (KSJC) between 2020 and 2024.

Maximum temperatures (°F)

Month Average 2024 2023 2022 2021 2020
January 61.0 63.0 60.0 63.0 62.0 59.0
February 63.0 64.0 60.0 67.0 65.0 67.0
March 65.0 60.0 69.0 65.0 63.0
April 70.0 68.0 71.0 69.0 70.0
May 74.0 70.0 76.0 74.0 78.0
June 79.0 74.0 82.0 77.0 82.0
July 81.0 82.0 79.0 79.0 81.0
August 83.0 85.0 83.0 81.0 85.0
September 82.0 79.0 84.0 82.0 83.0
October 78.0 80.0 74.0 74.0 82.0
November 68.0 72.0 64.0 69.0 67.0
December 61.0 64.0 56.0 57.0 62.0
Average 71.0 63.0 71.0 73.0 71.0 73.0

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°F)

Month Average 2024 2023 2022 2021 2020
January 45.0 48 46 43 44 44
February 44.0 47 41 42 45 42
March 47.0 45 47 44 47
April 50.0 49 49 47 51
May 54.0 53 53 52 55
June 58.0 56 59 57 58
July 59.0 59 58 59 58
August 61.0 63 61 60 63
September 60.0 59 62 58 61
October 55.0 57 56 54 57
November 48.0 49 44 50 44
December 45.0 48 42 45 42
Average 51.0 48.0 52.0 52.0 51.0 52.0

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Cold and hot days

Number of days 2024 2023 2022 2021 2020
86 °F or warmer 0 32 33 19 42
77 °F or warmer 0 110 121 100 140
68 °F or warmer 8 205 227 220 224
32 °F or colder 0 0 0 0 1

Precipitation (%)

Month Average 2024 2023 2022 2021 2020
January 9.3 9 15 0 7 4
February 7.6 18 9 0 4 0
March 8.6 17 3 4 9
April 2.4 1 3 0 5
May 1.3 1 0 0 1
June 0.3 0 0 0 1
July 0.0 0 0 0 0
August 0.2 2 0 0 0
September 0.3 0 1 0 0
October 0.7 2 0 4 0
November 3.3 1 4 1 1
December 8.0 9 21 12 3
Average 4.4 13.1 4.3 2.0 2.3 2.0

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (miles per hour)

Month Average 2024 2023 2022 2021 2020
January 6.4 7 9 4 7 6
February 7.6 8 8 6 8 7
March 7.9 9 8 8 7
April 8.0 8 9 8 7
May 8.4 8 10 8 8
June 8.3 8 9 8 9
July 7.6 7 8 7 8
August 7.3 7 8 7 7
September 7.1 7 8 7 6
October 6.3 6 6 7 6
November 5.6 6 5 6 6
December 5.9 5 5 7 5
Average 7.2 7.1 7.3 7.2 7.4 6.9

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month 2024 2023 2022 2021 2020
January S S NW NW NW
February S NW NW NW NW
March S NW NW W
April NW NW NW NW
May W NW NW NW
June NW NW NW NW
July NW NW NW NW
August NW NW NW NW
September NW NW NW NW
October NW NW NW NW
November NW NW NW NW
December SE S S NW

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.

Santa Clara County weather Q&A

What is the warmest month in Santa Clara County?

The warmest month is August with an average temperature of 83 °F over the past years.

What is the coldest month in Santa Clara County?

The coldest month is December with an average daytime temperature of 61 °F in the past few years.

Which month is the wettest in Santa Clara County?

Chance of precipitation is the highest in January with a probability of around 9.4 %.

Which month is the driest in Santa Clara County?

The least rainfall and snow can be expected in July. The probability is about 0.0 %.