Photo: Jeffrey Beall · CC BY 4.0Walsh reaches 100° on about 12 days a year, more than 92% of U.S. towns
Midwinter brings lows of about 19°. It is a dry place: less rain and snow fall here than on 91% of U.S. towns. The latest 30-year average runs 1.0° warmer than 1901–2000’s, with March up the most. The frost-free window for a garden runs roughly April 30 to October 14.
A year in Walsh at a glance
Each month’s typical high and low, and what it brings.
What stands out about Walsh’s climate
Compared with towns across the U.S., with Walsh’s place in Colorado beside it.
What a year in Walsh feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 166 frost-free days a year
In half of years the last 32° night comes by April 30 and the first by October 14. Frost and day counts come from NOAA’s station at Walsh 1 W, CO, 1.1 miles from the town’s center, at about the same height.
The 2023 USDA map puts Walsh’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −4°. 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 23 inches of snow a winter
Snow, measured at Walsh 1 W, CO, falls mostly in December. Precipitation (rain plus melted snow) adds up to 17 inches a year; August is the wettest month and February the driest. Rain or snow falls on about 70 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Walsh
81% of the work is heating. Months averaging under 55° run from November through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Walsh 1 W, CO.
Living with Walsh’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
166 frost-free days in zone 6b. The last frost comes by Apr 30 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 14.
Months with highs of 62–84° and lows of 40° or more: May and September.
Parks & trails →Of the yearly building losses FEMA expects in Walsh from natural hazards, drought is the largest share (58%); heat waves, cold waves, winter storms and ice storms together are 8%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Walsh and similar climates
TownRatings has no climate map of the towns around Walsh yet.
Climates most like Walsh’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 |
|---|---|---|---|---|
| Walsh, CO | 19° | 93° | 17" | 23" |
| West Haven, UT | 21° | 92° | 18" | 23" |
| Colby, KS | 17° | 91° | 20" | 27" |
| Hereford, TX | 23° | 92° | 19" | 14" |
| Garden City, ID | 24° | 93° | 13" | 18" |
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 Walsh averaged 1.0° warmer than the 1900s. The biggest change is in March (+2.8°).
A smaller shift than in 81% 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 Walsh compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Walsh’s place among Colorado’s.
Walsh weather by month
Highs, lows and precipitation from NOAA’s grid at Walsh’s center; snow, wet days and snow on the ground from Walsh 1 W, CO. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 47° | 19° | 0.4" | 4.5" | 3 | 6 | 21° – 40° |
| February | 51° | 22° | 0.4" | 3.4" | 3 | 5 | 28° – 44° |
| March | 61° | 30° | 1.0" | 4.2" | 5 | 3 | 39° – 52° |
| April | 68° | 37° | 1.4" | 1.8" | 7 | 1 | 46° – 58° |
| May | 78° | 47° | 2.0" | 0.2" | 8 | 0 | 57° – 69° |
| June | 89° | 58° | 2.5" | 0.0" | 8 | 0 | 67° – 78° |
| July | 93° | 63° | 2.9" | 0.0" | 9 | 0 | 73° – 83° |
| August | 90° | 61° | 3.0" | 0.0" | 8 | 0 | 71° – 82° |
| September | 83° | 53° | 1.3" | 0.0" | 5 | 0 | 62° – 74° |
| October | 71° | 39° | 1.3" | 1.0" | 5 | 1 | 48° – 61° |
| November | 57° | 28° | 0.5" | 2.6" | 4 | 3 | 35° – 48° |
| December | 47° | 20° | 0.6" | 5.3" | 4 | 6 | 28° – 38° |
| Year | 70° | 40° | 17.3" | 23.0" | 70 | 25 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 21° to 40°. July is the most reliable, staying within 10°.
Where Walsh’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 Walsh’s center.
- Snow: Walsh 1 W, CO (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Walsh 1 W, CO, 1.1 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 Walsh’s climate
What is the weather like in Walsh?
A typical July afternoon reaches 93°, a January night drops to 19°, and about 23 inches of snow falls in a normal winter. Colder January nights than 62% of U.S. towns; hotter July afternoons than 91% of U.S. towns.
How cold does it get in Walsh in winter?
January nights average 19°. About 143 nights a year reach 32° or below and 3 reach 0° or below. In the coldest January of the last 30 years the month averaged 21°.
How much snow does Walsh get?
About 23 inches in a normal winter at Walsh 1 W, CO, most of it in December, with snow on the ground about 25 days a year.
How hot does it get in Walsh?
July, with a typical high of 93° and a low of 63°. About 69 days a year reach 90° and 12 reach 100° (Walsh 1 W, CO).
When is the first and last frost in Walsh?
In half of years the last spring frost (32°) comes by April 30 and the first fall frost by October 14, about 166 frost-free days, at Walsh 1 W, CO.
What growing zone is Walsh in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −4°.
What is the best time of year to visit Walsh?
By one simple rule (highs of 62–84° and lows of 40° or more), May and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Walsh getting warmer?
Yes: 1991–2020 averaged 1.0° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 81% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Walsh.
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.