Yuma climate
Yuma (Arizona, United States) has a hot desert climate (Köppen BWh). The average temperature over the year is 23 °C74 °F, and about 99 mm3.9 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Yuma climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 2068 | 643 | 1356 | 120.5 | 1 |
| Feb | 2272 | 846 | 1559 | 100.4 | 0 |
| Mar | 2780 | 1051 | 1965 | 80.3 | 0 |
| Apr | 3087 | 1356 | 2271 | 30.1 | 0 |
| May | 3595 | 1763 | 2679 | 20.1 | 0 |
| Jun | 40105 | 2271 | 3188 | 10.0 | 0 |
| Jul | 42107 | 2780 | 3494 | 130.5 | 0 |
| Aug | 41106 | 2780 | 3493 | 130.5 | 0 |
| Sep | 39102 | 2475 | 3188 | 120.5 | 0 |
| Oct | 3290 | 1763 | 2577 | 60.2 | 0 |
| Nov | 2578 | 1152 | 1865 | 100.4 | 0 |
| Dec | 1967 | 643 | 1355 | 100.4 | 0 |
| Year | 42107 | 643 | 2374 | 993.9 | 2 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 45% | 39% | 3.6 | 10:13 |
| Feb | 43% | 41% | 4.6 | 10:58 |
| Mar | 39% | 37% | 6.0 | 11:53 |
| Apr | 34% | 31% | 7.4 | 12:57 |
| May | 32% | 28% | 8.2 | 13:50 |
| Jun | 29% | 25% | 8.4 | 14:18 |
| Jul | 37% | 35% | 7.7 | 14:06 |
| Aug | 41% | 32% | 7.2 | 13:21 |
| Sep | 37% | 28% | 6.3 | 12:19 |
| Oct | 35% | 29% | 5.1 | 11:18 |
| Nov | 36% | 34% | 3.9 | 10:25 |
| Dec | 45% | 39% | 3.3 | 10:00 |
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 Yuma is like
The warmest month is July, with an average high of 42 °C107 °F and a low of 27 °C80 °F. The coldest is December, when highs average 19 °C67 °F and lows 6 °C43 °F. Seasons are strongly marked: the warmest month is on average 21.6 °C38.8 °F warmer than the coldest.
It is very dry, with only 99 mm3.9 in of precipitation in an average year. The wettest three-month stretch is July–September, which brings 38% of the annual total. The wettest month is August (13 mm0.5 in), the driest is June (1 mm0.0 in).
Relative humidity ranges from 29% in June to 45% in January. The clearest skies (lowest average cloud amount, 25%) are typical of June. Average wind speed near the ground ranges from 7 km/h (5 mph) in October to 10 km/h (6 mph) in July. Daylight lasts from about 10.0 hours in December to 14.3 hours in June.
Best time to visit Yuma
Based on these averages, the most comfortable months for sightseeing and outdoor activities are November–March: average highs of 19 °C67 °F to 27 °C80 °F with 8 mm0.3 in to 12 mm0.5 in of precipitation per month.
The most challenging month is July, which is hot, with average highs of 42 °C107 °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 Yuma
- Winter (December–February) — highs 1967 to 22 °C72 °F, lows 643 to 8 °C46 °F, about 11 mm0.4 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 2780 to 35 °C95 °F, lows 1051 to 17 °C63 °F, about 4 mm0.2 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 40105 to 42 °C107 °F, lows 2271 to 27 °C80 °F, about 9 mm0.4 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 2578 to 39 °C102 °F, lows 1152 to 24 °C75 °F, about 9 mm0.4 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an extra layer for the cooler mornings and evenings.
How Yuma compares
Compared with San Luis Río Colorado, about 33 km to the southwest, Yuma has practically the same average temperature and receives 18% more precipitation (99 mm3.9 in vs 84 mm3.3 in). The difference is largest in July (0.6 °C1.1 °F cooler).
Of the 222 places in the United States covered by World Climates, Yuma is the 6th warmest by annual mean temperature and the 222nd 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: San Luis Río Colorado (Mexico, BWh), Mexicali (Mexico, BWh) and Ouargla (Algeria, BWh).
Nearby places
- San Luis Río Colorado 33 km · 24 °C74 °F · 84 mm3.3 in
- Mexicali 78 km · 24 °C76 °F · 126 mm5.0 in
- Ensenada 209 km · 19 °C66 °F · 255 mm10 in
- El Cajon 219 km · 20 °C68 °F · 320 mm13 in
- Tijuana 224 km · 19 °C66 °F · 269 mm11 in
- Escondido 234 km · 20 °C67 °F · 320 mm13 in
- San Diego 238 km · 19 °C67 °F · 269 mm11 in
- Peoria 242 km · 23 °C74 °F · 193 mm7.6 in
Frequently asked questions
What is the warmest month in Yuma?
July is the warmest month in Yuma, with an average high of 42 °C (107 °F) and an average low of 27 °C (80 °F).
What is the coldest month in Yuma?
December is the coldest month, with an average high of 19 °C (67 °F) and an average low of 6 °C (43 °F).
When does it rain the most in Yuma?
August is the wettest month with about 13 mm (0.5 in) of precipitation; June is the driest with about 1 mm (0.0 in).
What is the best time to visit Yuma?
Judging by long-term averages, the most comfortable months are November–March.
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 140 m, while Yuma lies at about 43 m. Temperatures on this page were therefore adjusted by +0.6 °C1.1 °F using the standard lapse rate of 6.5 °C per 1,000 m.