Greenehaven reaches 100° on about 35 days a year, more than 98% of U.S. towns
A typical July afternoon reaches 98°, a January night drops to 28°, and snow is almost unheard of.
A year in Greenehaven at a glance
Each month’s typical high and low, and what it brings.
What stands out about Greenehaven’s climate
Compared with towns across the U.S., with Greenehaven’s place in Arizona beside it.
What a year in Greenehaven feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 244 frost-free days a year
In half of years the last 32° night comes by March 14 and the first by November 16. Frost and day counts come from NOAA’s station at Wahweap, AZ, 4 miles from the town’s center, 240 ft lower.
The 2023 USDA map puts Greenehaven’s center in zone 8a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 14°. 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 7 inches of rain a year
August is the wettest month and June the driest. Rain falls on about 36 days a year. Snow is rare: about 0.6" in a normal year at Wahweap, AZ, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Greenehaven
62% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Wahweap, AZ.
Living with Greenehaven’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
244 frost-free days in zone 8a. The last frost comes by Mar 14 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 16.
Months with highs of 62–84° and lows of 40° or more: April, May and October.
Parks & trails →Of the yearly building losses FEMA expects in Greenehaven from natural hazards, river flooding is the largest share (65%); heat waves, cold waves, winter storms and ice storms together are 3%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Greenehaven and similar climates
TownRatings has no climate map of the towns around Greenehaven yet.
Climates most like Greenehaven’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 |
|---|---|---|---|---|
| Greenehaven, AZ | 28° | 98° | 7" | 0.6" |
| San Elizario, TX | 31° | 97° | 9" | 1.7" |
| Rosamond, CA | 33° | 98° | 8" | 1.2" |
| Las Cruces, NM | 28° | 96° | 9" | 1.0" |
| Fallon, NV | 22° | 96° | 4" | 4.5" |
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 Greenehaven averaged 1.5° warmer than the 1900s. The biggest change is in January (+2.8°).
A bigger shift than in 58% 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 Greenehaven compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Greenehaven’s place among Arizona’s.
Greenehaven weather by month
Highs, lows and precipitation from NOAA’s grid at Greenehaven’s center; snow, wet days and snow on the ground from Wahweap, AZ. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 46° | 28° | 0.7" | 0.0" | 4 | 0 | 31° – 41° |
| February | 53° | 32° | 0.6" | 0.3" | 5 | 0 | 37° – 48° |
| March | 63° | 39° | 0.6" | 0.0" | 4 | 0 | 45° – 57° |
| April | 71° | 45° | 0.3" | 0.0" | 3 | 0 | 52° – 64° |
| May | 81° | 53° | 0.4" | 0.0" | 2 | 0 | 61° – 72° |
| June | 93° | 63° | 0.1" | 0.0" | 1 | 0 | 72° – 83° |
| July | 98° | 70° | 0.6" | 0.0" | 2 | 0 | 80° – 88° |
| August | 94° | 68° | 1.0" | 0.0" | 4 | 0 | 78° – 87° |
| September | 87° | 60° | 0.7" | 0.0" | 3 | 0 | 69° – 77° |
| October | 72° | 48° | 0.9" | 0.0" | 4 | 0 | 56° – 65° |
| November | 57° | 35° | 0.5" | 0.0" | 2 | 0 | 40° – 52° |
| December | 45° | 27° | 0.5" | 0.3" | 3 | 0 | 30° – 42° |
| Year | 72° | 47° | 6.8" | 0.6" | 36 | 0 |
How much a month can swing
A normal is an average. November swings the most: from 1991 to 2020 its average ranged from 40° to 52°. July is the most reliable, staying within 8°.
Where Greenehaven’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 Greenehaven’s center.
- Snow: Wahweap, AZ.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Wahweap, AZ, 4 miles from the town’s center, 240 ft lower; 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 Greenehaven’s climate
What is the weather like in Greenehaven?
A typical July afternoon reaches 98°, a January night drops to 28°, and snow is almost unheard of. Milder January nights than 69% of U.S. towns; hotter July afternoons than 98% of U.S. towns.
How cold does it get in Greenehaven in winter?
December nights average 27°. About 81 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 30°.
How much snow does Greenehaven get?
About 0.6 inches in a normal winter at Wahweap, AZ, so most winters see none.
How hot does it get in Greenehaven?
July, with a typical high of 98° and a low of 70°. About 106 days a year reach 90° and 35 reach 100° (Wahweap, AZ).
When is the first and last frost in Greenehaven?
In half of years the last spring frost (32°) comes by March 14 and the first fall frost by November 16, about 244 frost-free days, at Wahweap, AZ.
What growing zone is Greenehaven in?
Zone 8a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 14°.
What is the best time of year to visit Greenehaven?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Greenehaven getting warmer?
Yes: 1991–2020 averaged 1.5° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 58% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Greenehaven.
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.