Alamillo reaches 100° on about 11 days a year, more than 91% of U.S. towns
A typical July afternoon reaches 94°, a January night drops to 21°, and about 5 inches of snow falls in a normal winter.
A year in Alamillo at a glance
Each month’s typical high and low, and what it brings.
What stands out about Alamillo’s climate
Compared with towns across the U.S., with Alamillo’s place in New Mexico beside it.
What a year in Alamillo feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 196 frost-free days a year
In half of years the last 32° night comes by April 12 and the first by October 27. Frost and day counts come from NOAA’s station at Socorro 20 N, NM, 7 miles from the town’s center, 170 ft higher.
The 2023 USDA map puts Alamillo’s center in zone 7b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 6°. 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 5 inches of snow a winter
Snow, measured at Bernardo, NM, falls mostly in December. Precipitation (rain plus melted snow) adds up to 9 inches a year; July is the wettest month and February the driest. Rain or snow falls on about 39 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Alamillo
72% 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 Socorro 20 N, NM.
Living with Alamillo’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
196 frost-free days in zone 7b. The last frost comes by Apr 12 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 27.
Months with highs of 62–84° and lows of 40° or more: October. 0.4 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Alamillo from natural hazards, river flooding is the largest share (64%); heat waves, cold waves, winter storms and ice storms together are 2%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Alamillo and similar climates
TownRatings has no climate map of the towns around Alamillo yet.
Climates most like Alamillo’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 |
|---|---|---|---|---|
| Alamillo, NM | 21° | 94° | 9" | 4.7" |
| Silver Springs, NV | 23° | 95° | 5" | 4.5" |
| Star, ID | 24° | 93° | 11" | 7.4" |
| Fruitvale, CO | 19° | 94° | 10" | 13" |
| Ontario, OR | 23° | 93° | 10" | 15" |
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 Alamillo averaged 2.1° warmer than the 1900s. The biggest change is in March (+3.1°).
A bigger shift than in 93% 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 Alamillo compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Alamillo’s place among New Mexico’s.
Alamillo weather by month
Highs, lows and precipitation from NOAA’s grid at Alamillo’s center; snow, wet days and snow on the ground from Bernardo, NM. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 54° | 21° | 0.3" | 1.4" | 2 | 1 | 31° – 42° |
| February | 60° | 26° | 0.3" | 0.3" | 3 | 0 | 38° – 48° |
| March | 68° | 32° | 0.4" | 0.4" | 3 | 0 | 47° – 55° |
| April | 75° | 39° | 0.3" | 0.0" | 2 | 0 | 52° – 62° |
| May | 85° | 47° | 0.4" | 0.0" | 3 | 0 | 62° – 70° |
| June | 94° | 56° | 0.5" | 0.0" | 3 | 0 | 71° – 79° |
| July | 94° | 62° | 1.7" | 0.0" | 6 | 0 | 75° – 81° |
| August | 92° | 60° | 1.7" | 0.0" | 6 | 0 | 73° – 80° |
| September | 86° | 53° | 1.3" | 0.0" | 4 | 0 | 64° – 73° |
| October | 76° | 40° | 0.8" | 0.4" | 4 | 0 | 54° – 62° |
| November | 63° | 29° | 0.5" | 0.4" | 2 | 0 | 40° – 53° |
| December | 53° | 22° | 0.6" | 1.8" | 3 | 1 | 32° – 42° |
| Year | 75° | 41° | 8.8" | 4.7" | 39 | 2 |
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 53°. August is the most reliable, staying within 7°.
Where Alamillo’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 Alamillo’s center.
- Snow: Bernardo, NM.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Socorro 20 N, NM, 7 miles from the town’s center, 170 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 Alamillo’s climate
What is the weather like in Alamillo?
A typical July afternoon reaches 94°, a January night drops to 21°, and about 5 inches of snow falls in a normal winter. Colder January nights than 53% of U.S. towns; hotter July afternoons than 94% of U.S. towns.
How cold does it get in Alamillo in winter?
January nights average 21°. About 110 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 31°.
How much snow does Alamillo get?
About 4.7 inches in a normal winter at Bernardo, NM, most of it in December, with snow on the ground about 2 days a year.
How hot does it get in Alamillo?
July, with a typical high of 94° and a low of 62°. About 87 days a year reach 90° and 11 reach 100° (Socorro 20 N, NM).
When is the first and last frost in Alamillo?
In half of years the last spring frost (32°) comes by April 12 and the first fall frost by October 27, about 196 frost-free days, at Socorro 20 N, NM.
What growing zone is Alamillo in?
Zone 7b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 6°.
What is the best time of year to visit Alamillo?
By one simple rule (highs of 62–84° and lows of 40° or more), October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Alamillo getting warmer?
Yes: 1991–2020 averaged 2.1° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 93% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Alamillo.
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.