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Monthly
Summary
Summary
TRACY, CALIFORNIA
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North America > United States > California
Elevation: 18 meters Latitude: 37 40N Longitude: 121 18W
Elevation: 18 meters Latitude: 37 40N Longitude: 121 18W
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WEATHER
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CURRENT CONDITIONS
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TEMPERATURE
Average Temperature | Years on Record: 30  |
 | ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| C | 15.3 | 9.2 | 11.2 | 12.6 | 14.6 | 16.9 | 19.4 | 20.7 | 20.6 | 19.6 | 16.9 | 12.3 | 9.2 |
Average High Temperature | Years on Record: 30 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| C | 21.9 | 13.4 | 16.3 | 18.5 | 21.4 | 24.4 | 27.7 | 29.4 | 29.1 | 27.8 | 24.1 | 17.4 | 13.5 |
Average Low Temperature | Years on Record: 30 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| C | 8.6 | 4.8 | 6.1 | 6.7 | 7.7 | 9.4 | 11.1 | 11.9 | 12 | 11.4 | 9.8 | 7.2 | 4.8 |
Highest Recorded Temperature | Years on Record: 30 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| C | 32.2 | 16.4 | 19.4 | 22.4 | 24.6 | 28.2 | 32.2 | 31.6 | 31.4 | 30.5 | 27.4 | 22.6 | 16.7 |
Lowest Recorded Temperature | Years on Record: 30 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| C | 1.6 | 2.1 | 3.5 | 4.3 | 5.4 | 7.4 | 9.2 | 10.4 | 9.9 | 9.6 | 7.1 | 4.4 | 1.6 |
Average Number of Days Above 90F/32C | Years on Record: 13 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| Days | 72 | --- | --- | --- | --- | 4 | 10 | 23 | 19 | 11 | 2 | --- | --- |
Average Number of Days Below 32F/0C | Years on Record: 13 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| Days | 27 | 8 | 5 | 2 | --- | --- | --- | --- | --- | --- | --- | 3 | 8 |
PRECIPITATION
Average Precipitation | Years on Record: 30 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| mm | 1206 | 244 | 231 | 179 | 65 | 30 | 6 | --- | 3 | 13 | 59 | 190 | 185 |
Average Number of Days With Precipitation | Years on Record: 39 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| Days | 40 | 7 | 6 | 6 | 4 | 2 | 1 | --- | --- | 1 | 2 | 5 | 6 |
Most Reported Precipitation in a Month | Years on Record: 30 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| mm | 685 | 594 | 685 | 576 | 225 | 204 | 62 | 7 | 44 | 76 | 217 | 660 | 522 |
Least Reported Precipitation in a Month | Years on Record: 30 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| mm | --- | 8 | 8 | 2 | 2 | --- | --- | --- | --- | --- | --- | 4 | --- |
Most Precipitation Reported in a Day | Years on Record: 39 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| mm | 65.8 | 54.1 | 29.2 | 39.9 | 29.7 | 29.7 | 13.7 | 6.6 | 65.8 | 41.1 | 22.9 | 37.1 | 37.9 |
Avg. No. of Days w/Precip. Above 0.2in/5mm | Years on Record: 39 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| Days | 23 | 4 | 3 | 4 | 2 | 1 | --- | --- | --- | 1 | 1 | 3 | 4 |
Avg. # of Days w/Precip. Above 0.4in/10mm | Years on Record: 39 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| Days | 3 | 1 | --- | --- | --- | --- | --- | --- | --- | --- | --- | 1 | 1 |
Avg. No. of Days w/Precip. Above 1in/25mm | Years on Record: 39 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| Days | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
PRECIPITATION - RAIN
Average Number of Rainy Days | Years on Record: 13 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| Days | 30 | 6 | 4 | 5 | 3 | --- | --- | --- | --- | --- | 1 | 2 | 5 |
PRECIPITATION - SNOW
Average Snowfall | Years on Record: 39 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| cm | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
Most Snow Reported in a Month | Years on Record: 39 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| cm | 0.8 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 0.8 |
HUMIDITY
Average Relative Humidity | Years on Record: 7 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| % | 64 | 79 | 77 | 69 | 63 | 56 | 52 | 47 | 53 | 56 | 58 | 75 | 83 |
Average Dew Point | Years on Record: 7 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| C | 7 | 3 | 5 | 5 | 7 | 7 | 8 | 10 | 11 | 10 | 7 | 6 | 4 |
DEGREE DAYS
Heating Degree Days | Years on Record: 30 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| Days | 1426.1 | 285 | 198.9 | 179.4 | 119.4 | 67.2 | 22.8 | 5 | 3.9 | 15.6 | 62.2 | 181.7 | 285 |
Cooling Degree Days | Years on Record: 30 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| Days | 309.4 | --- | --- | 1.7 | 5.6 | 22.8 | 54.4 | 77.8 | 72.2 | 54.4 | 19.4 | 1.1 | --- |
Growing Degree Days | Years on Record: 30 |
| ANNUAL | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ||||||||||||||
| Days | 1980.7 | --- | 34.6 | 80.9 | 136.7 | 215.3 | 281.7 | 330.7 | 327.2 | 288.3 | 215.3 | 70 | --- |
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