Temecula climate
Temecula (California, United States) has a hot semi-arid climate (Köppen BSh). The average temperature over the year is 20 °C68 °F, and about 299 mm12 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Temecula climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1966 | 744 | 1355 | 552.1 |
| Feb | 2067 | 744 | 1356 | 652.6 |
| Mar | 2272 | 847 | 1560 | 321.3 |
| Apr | 2576 | 949 | 1763 | 200.8 |
| May | 2984 | 1254 | 2069 | 80.3 |
| Jun | 3493 | 1560 | 2577 | 00.0 |
| Jul | 38100 | 2068 | 2984 | 60.3 |
| Aug | 38100 | 2068 | 2984 | 60.2 |
| Sep | 3595 | 1865 | 2780 | 70.3 |
| Oct | 2984 | 1457 | 2271 | 170.7 |
| Nov | 2374 | 1050 | 1762 | 271.1 |
| Dec | 1865 | 644 | 1254 | 562.2 |
| Year | 38100 | 644 | 2068 | 29912 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 57% | 41% | 3.2 | 10:09 |
| Feb | 61% | 43% | 4.1 | 10:56 |
| Mar | 61% | 43% | 5.4 | 11:53 |
| Apr | 60% | 40% | 6.5 | 12:59 |
| May | 56% | 43% | 6.9 | 13:53 |
| Jun | 45% | 42% | 7.3 | 14:22 |
| Jul | 39% | 35% | 7.4 | 14:10 |
| Aug | 38% | 29% | 7.1 | 13:23 |
| Sep | 41% | 28% | 6.0 | 12:20 |
| Oct | 47% | 33% | 4.6 | 11:17 |
| Nov | 49% | 36% | 3.6 | 10:22 |
| Dec | 57% | 42% | 2.9 | 9:56 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Temecula is like
The warmest month is August, with an average high of 38 °C100 °F and a low of 20 °C68 °F. The coldest is December, when highs average 18 °C65 °F and lows 6 °C44 °F. There is a clear seasonal cycle, with 16.4 °C29.5 °F between the average temperature of the warmest and the coolest month.
It is dry, with about 299 mm12 in of precipitation per year. The wettest three-month stretch is December–February, which brings 59% of the annual total. Months with less than 20 mm0.8 in on average: April–October. The wettest month is February (65 mm2.6 in), the driest is June (0 mm0.0 in).
Relative humidity ranges from 38% in August to 61% in March. The clearest skies (lowest average cloud amount, 28%) are typical of September. Average wind speed near the ground ranges from 4 km/h (2 mph) in August to 5 km/h (3 mph) in April. Daylight lasts from about 9.9 hours in December to 14.4 hours in June.
Best time to visit Temecula
Based on these averages, the most comfortable months for sightseeing and outdoor activities are October–May: average highs of 18 °C65 °F to 29 °C84 °F with 8 mm0.3 in to 65 mm2.6 in of precipitation per month.
The most challenging month is August, which is hot, with average highs of 38 °C100 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Temecula
- Winter (December–February) — highs 1865 to 20 °C67 °F, lows 644 to 7 °C44 °F, about 59 mm2.3 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Spring (March–May) — highs 2272 to 29 °C84 °F, lows 847 to 12 °C54 °F, about 20 mm0.8 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 3493 to 38 °C100 °F, lows 1560 to 20 °C68 °F, about 4 mm0.2 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 2374 to 35 °C95 °F, lows 1050 to 18 °C65 °F, about 17 mm0.7 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
How Temecula compares
Compared with Oceanside, about 39 km to the southwest, Temecula is on average 2.1 °C3.8 °F warmer and receives a similar amount of precipitation. The difference is largest in July (7.8 °C14.1 °F warmer).
Of the 222 places in the United States covered by World Climates, Temecula is the 34th warmest by annual mean temperature and the 204th wettest by annual precipitation. See all of them on the United States climate page.
Places in other countries with the most similar temperature and rainfall pattern: El Kelaa des Srarhna (Morocco, BSh), Marrakesh (Morocco, BSh) and Almería (Spain, BSh).
Nearby places
- Murrieta 9 km · 17 °C63 °F · 298 mm12 in
- Oceanside 39 km · 18 °C64 °F · 314 mm12 in
- Escondido 42 km · 20 °C67 °F · 320 mm13 in
- Riverside 56 km · 20 °C68 °F · 289 mm11 in
- San Bernardino 70 km · 19 °C67 °F · 289 mm11 in
- Santa Ana 72 km · 17 °C63 °F · 311 mm12 in
- El Cajon 80 km · 20 °C68 °F · 320 mm13 in
- Anaheim 80 km · 20 °C67 °F · 331 mm13 in
Frequently asked questions
What is the warmest month in Temecula?
August is the warmest month in Temecula, with an average high of 38 °C (100 °F) and an average low of 20 °C (68 °F).
What is the coldest month in Temecula?
December is the coldest month, with an average high of 18 °C (65 °F) and an average low of 6 °C (44 °F).
When does it rain the most in Temecula?
February is the wettest month with about 65 mm (2.6 in) of precipitation; June is the driest with about 0 mm (0.0 in).
What is the best time to visit Temecula?
Judging by long-term averages, the most comfortable months are October–May.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 855 m, while Temecula lies at about 310 m. Temperatures on this page were therefore adjusted by +3.5 °C6.4 °F using the standard lapse rate of 6.5 °C per 1,000 m.