Yuma, AZ Climate & Monthly Averages
Yuma has a hot desert climate. July is the hottest month, averaging 109° by day; December is the coldest at 69°.
Yuma's climate runs on sunshine and sparse rain
Rain is the exception in Yuma. The city collects about 3.1 inches (79 mm) across 16 wet days in a typical year, which leaves the sky clear for most of it - 11.2 hours of sunshine a day on average. Highs run from 69°F (21°C) in December to 109°F (43°C) in July.
What the dry climate changes
July is the warm end of the year, averaging 109°F (43°C) by day and 83°F (28°C) overnight. December bottoms out at 69°F (21°C) in daylight, 48°F (9°C) after dark. Average highs hold at or above 30°C for 7 months of the year, April through October being the unbroken run.
June is the brightest month at 13.4 hours of sun a day, against an annual average of 11.2 - sunnier than almost anywhere else we cover. 12 months average under 20 mm of rain, the longest unbroken stretch running January through December. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 121°F (49°C) and the lowest daily minimum 30°F (-1°C).
More climate facts for Yuma
- Hottest month: July - highs near 109°F (43°C)
- Coldest month: December - highs near 69°F (21°C)
- Decade extremes (2015-2024): 121°F (49°C) high · 30°F (-1°C) low
- Wettest month: January (3 rainy days) · Sunniest: June (13.4 h sun/day)
- Climate type: hot desert
- Annual swing: 22°C between the average warmest and coolest month · day to night: 14°C
- Months averaging 30°C or hotter: 7
- Average humidity: 32%
Heat, cold and scarce precipitation in the dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.
When the dry weather is easiest to use
Avoiding the hardest heat or cold
November to March is the sweet spot for Yuma - temperatures sit either side of the peak heat rather than in it. Expect 75°F (24°C) in the afternoon and around 2 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in November.
Prepare for sun and cooler nights
Pack for Yuma with lightweight, breathable clothing and serious sun protection and a mid-layer for the evenings, which fall away fast after sunset. July nights average 83°F (28°C), so evenings rarely match the afternoons.
Monthly heat and rainfall table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 70° | 47° | 3 | 0.5 in | 9.0 h/day | 10.2 h | 9% | 42% |
| February | 74° | 50° | 2 | 0.4 in | 9.8 h/day | 11.0 h | 6% | 34% |
| March | 81° | 55° | 2 | 0.3 in | 11.0 h/day | 11.9 h | 5% | 32% |
| April | 89° | 61° | 0 | 0.0 in | 12.5 h/day | 12.9 h | 2% | 24% |
| May | 94° | 66° | 0 | 0.1 in | 12.9 h/day | 13.8 h | 1% | 27% |
| June | 105° | 75° | 0 | 0.1 in | 13.4 h/day | 14.3 h | 1% | 25% |
| July | 109° | 83° | 2 | 0.2 in | 13.0 h/day | 14.1 h | 5% | 31% |
| August | 108° | 83° | 2 | 0.2 in | 12.6 h/day | 13.3 h | 7% | 36% |
| September | 102° | 77° | 1 | 0.3 in | 11.4 h/day | 12.3 h | 4% | 35% |
| October | 92° | 66° | 1 | 0.2 in | 10.8 h/day | 11.3 h | 3% | 30% |
| November | 79° | 55° | 1 | 0.3 in | 9.6 h/day | 10.4 h | 2% | 30% |
| December | 69° | 48° | 2 | 0.5 in | 8.6 h/day | 10.0 h | 6% | 38% |
How daytime heat and cool nights change by month
Each card shows the average high and low. The bar places that month between Yuma's coldest night and warmest afternoon.
January
- Rain
- 3 days
- Sunshine
- 9.0 h
- Daylight
- 10.2 h
February
- Rain
- 2 days
- Sunshine
- 9.8 h
- Daylight
- 11.0 h
March
- Rain
- 2 days
- Sunshine
- 11.0 h
- Daylight
- 11.9 h
April
- Rain
- 0 days
- Sunshine
- 12.5 h
- Daylight
- 12.9 h
May
- Rain
- 0 days
- Sunshine
- 12.9 h
- Daylight
- 13.8 h
June
- Rain
- 0 days
- Sunshine
- 13.4 h
- Daylight
- 14.3 h
July
- Rain
- 2 days
- Sunshine
- 13.0 h
- Daylight
- 14.1 h
August
- Rain
- 2 days
- Sunshine
- 12.6 h
- Daylight
- 13.3 h
September
- Rain
- 1 day
- Sunshine
- 11.4 h
- Daylight
- 12.3 h
October
- Rain
- 1 day
- Sunshine
- 10.8 h
- Daylight
- 11.3 h
November
- Rain
- 1 day
- Sunshine
- 9.6 h
- Daylight
- 10.4 h
December
- Rain
- 2 days
- Sunshine
- 8.6 h
- Daylight
- 10.0 h
Looking for warmer alternatives? Browse warm places by month, or compare Yuma's coolest part of the year: December, January, February.
Heat and cold across the Yuma year
Spring (March through May)
Spring runs hot here - highs near 88°F (31°C), nights near 61°F (16°C), and precipitation is sparse, near 11 mm (0.4 in) for the season. Daylight is generous - around 12.1 hours of sun a day.
Summer (June through August)
Summer in Yuma is punishingly hot, with daytime highs averaging 107°F (42°C) and nights around 81°F (27°C); precipitation is sparse, near 12 mm (0.5 in) for the season. Daylight is generous - around 13.0 hours of sun a day.
Fall (September through November)
Fall sits firmly in the heat here - highs near 91°F (33°C), nights near 66°F (19°C), and precipitation is sparse, near 21 mm (0.8 in) for the season. Daylight is generous - around 10.6 hours of sun a day.
Winter (December through February)
Winter brings comfortable warmth here - highs near 71°F (22°C), nights near 48°F (9°C), and precipitation is sparse, near 1.4 inches (36 mm) for the season.
How unusual is Yuma?
- Annual precipitation is 3.1 inches (79 mm) - drier than almost every other city we track.
- Afternoons run 14°C above the following night - a bigger day-to-night gap than any other city in our 3496-city dataset.
- Relative humidity averages 32% - drier than almost every other city we track.
These comparisons use the same ten-year window for every city in the dataset.