Photo: Marine 69-71 · CC BY-SA 4.0Wellton reaches 100° on about 111 days a year, more than all but 57 U.S. towns
The coldest hours of a January night bottom out at 41° on average. A year here swings 67° from midwinter lows to midsummer highs. It is a dry place: less rain and snow fall here than on almost every U.S. town. From November to March, highs of 68–80° make it easy to spend the day outdoors.
A year in Wellton at a glance
Each month’s typical high and low, and what it brings.
What stands out about Wellton’s climate
Compared with towns across the U.S., with Wellton’s place in Arizona beside it.
What a year in Wellton feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 111 days a year reach 100°
And 174 days reach 90°. Frost and day counts come from NOAA’s station at Yuma 27 Ene, AZ, 14 miles from the town’s center, 310 ft higher.
The 2023 USDA map puts Wellton’s center in zone 9b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 30°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 4 inches of rain a year
February is the wettest month and June the driest. Rain falls on about 18 days a year. Snow is rare: about 0.0" in a normal year at Yuma Proving Ground, AZ, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Wellton
20% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from December.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Yuma 27 Ene, AZ.
Living with Wellton’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 9b. Frost comes about 8 winters in 10, so the growing year is set by heat, not cold: 111 days at 100° make midsummer the hard season for gardens.
Months with highs of 62–84° and lows of 40° or more: January, February, March, November and December. 28 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Wellton from natural hazards, river flooding is the largest share (81%); heat waves, cold waves, winter storms and ice storms together are 6%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Wellton and similar climates
TownRatings has no climate map of the towns around Wellton yet.
Climates most like Wellton’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Wellton, AZ | 41° | 108° | 4" | 0.0" |
| Whitney, NV | 38° | 107° | 4" | 0.2" |
| Cathedral City, CA | 45° | 106° | 4" | 0.0" |
| St. George, UT | 33° | 103° | 8" | 1.2" |
| Laredo, TX | 45° | 99° | 20" | 0.1" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Wellton averaged 2.2° warmer than the 1900s. The biggest change is in September (+2.8°).
A bigger shift than in 96% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Wellton compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Wellton’s place among Arizona’s.
Wellton weather by month
Highs, lows and precipitation from NOAA’s grid at Wellton’s center; snow, wet days and snow on the ground from Yuma Proving Ground, AZ. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 70° | 41° | 0.4" | 0.0" | 3 | 0 | 51° – 61° |
| February | 74° | 44° | 0.5" | 0.0" | 3 | 0 | 53° – 65° |
| March | 80° | 50° | 0.4" | 0.0" | 2 | 0 | 59° – 72° |
| April | 87° | 55° | 0.1" | 0.0" | 1 | 0 | 66° – 75° |
| May | 95° | 62° | 0.0" | 0.0" | 1 | 0 | 73° – 84° |
| June | 104° | 70° | 0.0" | 0.0" | 0 | 0 | 82° – 91° |
| July | 108° | 79° | 0.3" | 0.0" | 1 | 0 | 89° – 96° |
| August | 107° | 80° | 0.4" | 0.0" | 2 | 0 | 90° – 97° |
| September | 102° | 73° | 0.5" | 0.0" | 2 | 0 | 85° – 90° |
| October | 91° | 60° | 0.2" | 0.0" | 1 | 0 | 72° – 81° |
| November | 78° | 48° | 0.2" | 0.0" | 1 | 0 | 56° – 68° |
| December | 68° | 41° | 0.4" | 0.0" | 3 | 0 | 51° – 57° |
| Year | 89° | 59° | 3.5" | 0.0" | 18 | 0 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 59° to 72°. September is the most reliable, staying within 6°.
Where Wellton’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Wellton’s center.
- Snow: Yuma Proving Ground, AZ.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Yuma 27 Ene, AZ, 14 miles from the town’s center, 310 ft higher; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Wellton’s climate
What is the weather like in Wellton?
A typical July afternoon reaches 108°, a January night drops to 41°, and snow is almost unheard of. Milder January nights than 90% of U.S. towns; hotter July afternoons than all but 21 U.S. towns.
How cold does it get in Wellton in winter?
December nights average 41°. About 5 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 51°.
How much snow does Wellton get?
About 0.0 inches in a normal winter at Yuma Proving Ground, AZ, so most winters see none.
How hot does it get in Wellton?
July, with a typical high of 108° and a low of 79°. About 174 days a year reach 90° and 111 reach 100° (Yuma 27 Ene, AZ).
When is the first and last frost in Wellton?
There is no reliable frost date: a 32° night comes in about 76% of winters at Yuma 27 Ene, AZ, so most years bring a freeze but some pass without one.
What growing zone is Wellton in?
Zone 9b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 30°.
What is the best time of year to visit Wellton?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Wellton getting warmer?
Yes: 1991–2020 averaged 2.2° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 96% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Wellton.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.