TODAY DEC15
TEMPERATURE47
HUMIDITY86
PRESSURE30.12
WIND COND.355 3
  • 5737Sun
  • 5840Mon
  • 6042Tue40%
  • 5841Wed
  • 5942Thu
daynightWeather update from CW4787 Gilroy at
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Gilroy Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January38°F60°F47°F6.0"
February44°F62°F52°F7.2"
March44°F65°F53°F5.4"
April43°F67°F54°F2.8"
May48°F69°F57°F1.3"
June50°F72°F59°F2.4"
July54°F73°F61°F0.1"
August53°F74°F61°F0.0"
September51°F74°F60°F1.9"
October47°F73°F58°F2.0"
November45°F69°F55°F2.7"
December41°F61°F50°F9.8"

Did you know?

  • The highest monthly average temperature in Gilroy for July is 61 degrees.
  • The lowest monthly average temperature in Gilroy for January is 47 degrees.
  • The most monthly precipitation in Gilroy occurs in December with 9.8 inches.
  • The air quality index in Gilroy is 28% better than the national average.
  • The pollution index in Gilroy is 7% worse than the national average.

Compare Gilroy, CA Weather To Other Cities

Gilroy air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexGilroyCaliforniaNational
Air quality index365550
Pollution index5,429,55018,106,7265,066,862

Gilroy air quality information

MeasurementTotal
Days measured365
Days with good air quality323
Days with moderate air quality42
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Gilroy air quality information

PollutantTotal
Arsenic0.020%
Benzene0.080%
Carbon Tetrachloride0.000%
Lead0.050%
Mercury0.150%

Average monthly Gilroy temperature with heat index

Gilroy monthly precipitation with daily maximum

Gilroy monthly snow depth with daily maximum

Gilroy monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Aromas, CA2,5083628%
Freedom, CA2,7743628%
Las Lomas, CA3,0473628%
Ridgemark, CA3,1753628%
Corralitos, CA2,5573628%
Gilroy, CA52,5763628%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Burlington, NC52,5703138%
Delano, CA52,5387958%
West New York, NJ52,407536%
Levittown, PA52,4074020%
Elkhart, IN52,378468%
Gilroy, CA52,5763628%
Source: The Gilroy, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.
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