Iraan reaches 100° on about 33 days a year, more than 98% of U.S. towns
In January the night’s low is typically 33°. Only 64° separates winter nights from summer afternoons. It is a dry place: less rain and snow fall here than on 93% of U.S. towns. Keep the boiler serviced for the months from December to January, which average under 50°.
A year in Iraan at a glance
Each month’s typical high and low, and what it brings.
What stands out about Iraan’s climate
Compared with towns across the U.S., with Iraan’s place in Texas beside it.
What a year in Iraan feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 217 frost-free days a year
In half of years the last 32° night comes by March 31 and the first by November 3. Frost and day counts come from NOAA’s station at Sheffield, TX, 16 miles from the town’s center, at about the same height.
The 2023 USDA map puts Iraan’s center in zone 8a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 15°. 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 1 inches of snow a winter
Snow, measured at Mccamey, TX, falls mostly in December. Precipitation (rain plus melted snow) adds up to 15 inches a year; May is the wettest month and December the driest. Rain or snow falls on about 38 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Iraan
46% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from December through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Sheffield, TX.
Living with Iraan’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
217 frost-free days in zone 8a. The last frost comes by Mar 31 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 3.
Months with highs of 62–84° and lows of 40° or more: March, April, October and November. 0.9 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Iraan from natural hazards, drought is the largest share (39%); heat waves, cold waves, winter storms and ice storms together are 6%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Iraan and similar climates
TownRatings has no climate map of the towns around Iraan yet.
Climates most like Iraan’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 |
|---|---|---|---|---|
| Iraan, TX | 33° | 96° | 15" | 1.1" |
| Sedona, AZ | 30° | 97° | 17" | 1.0" |
| Carlsbad, NM | 29° | 97° | 13" | 2.7" |
| Yucca Valley, CA | 37° | 96° | 10" | 1.7" |
| Ivins, UT | 32° | 100° | 11" | 1.2" |
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 Iraan averaged 1.2° warmer than the 1900s. The biggest change is in March (+2.3°).
A smaller shift than in 62% 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 Iraan compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Iraan’s place among Texas’.
Iraan weather by month
Highs, lows and precipitation from NOAA’s grid at Iraan’s center; snow, wet days and snow on the ground from Mccamey, TX. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 61° | 33° | 0.8" | 0.2" | 3 | 0 | 41° – 51° |
| February | 67° | 37° | 0.7" | 0.0" | 3 | 0 | 46° – 58° |
| March | 74° | 45° | 0.9" | 0.0" | 3 | 0 | 54° – 65° |
| April | 83° | 52° | 0.9" | 0.0" | 2 | 0 | 61° – 73° |
| May | 90° | 62° | 2.1" | 0.0" | 4 | 0 | 70° – 82° |
| June | 95° | 70° | 1.6" | 0.0" | 3 | 0 | 79° – 88° |
| July | 96° | 72° | 1.4" | 0.0" | 4 | 0 | 80° – 89° |
| August | 96° | 71° | 1.7" | 0.0" | 4 | 0 | 79° – 89° |
| September | 89° | 64° | 2.0" | 0.0" | 4 | 0 | 72° – 82° |
| October | 81° | 54° | 1.6" | 0.0" | 3 | 0 | 64° – 72° |
| November | 70° | 41° | 1.0" | 0.3" | 2 | 0 | 49° – 61° |
| December | 62° | 34° | 0.7" | 0.6" | 3 | 0 | 43° – 52° |
| Year | 80° | 53° | 15.3" | 1.1" | 38 | 0 |
How much a month can swing
A normal is an average. April swings the most: from 1991 to 2020 its average ranged from 61° to 73°. October is the most reliable, staying within 7°.
Where Iraan’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 Iraan’s center.
- Snow: Mccamey, TX.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Sheffield, TX, 16 miles from the town’s center, at about the same height; 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 Iraan’s climate
What is the weather like in Iraan?
A typical July afternoon reaches 96°, a January night drops to 33°, and about 1 inches of snow falls in a normal winter. Milder January nights than 76% of U.S. towns; hotter July afternoons than 97% of U.S. towns.
How cold does it get in Iraan in winter?
January nights average 33°. About 60 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 41°.
How much snow does Iraan get?
About 1.1 inches in a normal winter at Mccamey, TX, most of it in December, with snow on the ground about 0 days a year.
How hot does it get in Iraan?
July, with a typical high of 96° and a low of 72°. About 135 days a year reach 90° and 33 reach 100° (Sheffield, TX).
When is the first and last frost in Iraan?
In half of years the last spring frost (32°) comes by March 31 and the first fall frost by November 3, about 217 frost-free days, at Sheffield, TX.
What growing zone is Iraan in?
Zone 8a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 15°.
What is the best time of year to visit Iraan?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Iraan getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 62% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Iraan.
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.