Spanish Valley reaches 100° on about 18 days a year, more than 94% of U.S. towns
Nights in January average 20°. Seasons differ by 74°, from the coldest nights to the warmest afternoons. Precipitation is light here, less than falls on 97% of U.S. towns. Tender plants can go out after about April 19; in half of years the first frost comes by October 21.
A year in Spanish Valley at a glance
Each month’s typical high and low, and what it brings.
What stands out about Spanish Valley’s climate
Compared with towns across the U.S., with Spanish Valley’s place in Utah beside it.
What a year in Spanish Valley feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 184 frost-free days a year
In half of years the last 32° night comes by April 19 and the first by October 21. Frost and day counts come from NOAA’s station at Castle Valley 1se, UT, 10 miles from the town’s center, 390 ft lower.
The 2023 USDA map puts Spanish Valley’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 2°. 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 15 inches of snow a winter
Snow, measured at Castle Valley, UT, falls mostly in December. Precipitation (rain plus melted snow) adds up to 10 inches a year; October is the wettest month and June the driest. Rain or snow falls on about 49 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Spanish Valley
78% of the work is heating. Months averaging under 55° run from October 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 Castle Valley 1se, UT.
Living with Spanish Valley’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
184 frost-free days in zone 7a. The last frost comes by Apr 19 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 21.
Months with highs of 62–84° and lows of 40° or more: May, September and October. 27 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Spanish Valley from natural hazards, avalanches are the largest share (40%); heat waves, cold waves, winter storms and ice storms together are 7%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Spanish Valley and similar climates
TownRatings has no climate map of the towns around Spanish Valley yet.
Climates most like Spanish Valley’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 |
|---|---|---|---|---|
| Spanish Valley, UT | 20° | 95° | 10" | 15" |
| Los Ranchos de Albuquerque, NM | 21° | 94° | 9" | 12" |
| Weiser, ID | 22° | 94° | 13" | 15" |
| Ontario, OR | 23° | 93° | 10" | 15" |
| Winnemucca, NV | 21° | 93° | 8" | 22" |
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 Spanish Valley averaged 2.3° warmer than the 1900s. The biggest change is in March (+3.5°).
A bigger shift than in 98% 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 Spanish Valley compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Spanish Valley’s place among Utah’s.
Spanish Valley weather by month
Highs, lows and precipitation from NOAA’s grid at Spanish Valley’s center; snow, wet days and snow on the ground from Castle Valley, UT. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 40° | 20° | 0.7" | 3.6" | 4 | 21° – 37° |
| February | 48° | 26° | 0.6" | 1.6" | 6 | 31° – 44° |
| March | 59° | 34° | 0.9" | 1.0" | 4 | 41° – 52° |
| April | 66° | 39° | 0.9" | 1.0" | 5 | 48° – 58° |
| May | 77° | 48° | 1.1" | 0.0" | 5 | 57° – 67° |
| June | 89° | 58° | 0.5" | 0.0" | 2 | 67° – 78° |
| July | 95° | 64° | 0.9" | 0.0" | 3 | 75° – 83° |
| August | 91° | 62° | 1.0" | 0.0" | 4 | 73° – 82° |
| September | 83° | 53° | 1.1" | 0.0" | 4 | 62° – 72° |
| October | 69° | 40° | 1.2" | 0.0" | 4 | 49° – 60° |
| November | 53° | 29° | 0.9" | 2.2" | 4 | 34° – 48° |
| December | 41° | 21° | 0.8" | 5.7" | 4 | 24° – 37° |
| Year | 67° | 41° | 10.4" | 15.1" | 49 |
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 37°. July is the most reliable, staying within 8°.
Where Spanish Valley’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 Spanish Valley’s center.
- Snow: Castle Valley, UT.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Castle Valley 1se, UT, 10 miles from the town’s center, 390 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 Spanish Valley’s climate
What is the weather like in Spanish Valley?
A typical July afternoon reaches 95°, a January night drops to 20°, and about 15 inches of snow falls in a normal winter. Colder January nights than 57% of U.S. towns; hotter July afternoons than 94% of U.S. towns.
How cold does it get in Spanish Valley in winter?
January nights average 20°. About 118 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 21°.
How much snow does Spanish Valley get?
About 15 inches in a normal winter at Castle Valley, UT, most of it in December.
How hot does it get in Spanish Valley?
July, with a typical high of 95° and a low of 64°. About 84 days a year reach 90° and 18 reach 100° (Castle Valley 1se, UT).
When is the first and last frost in Spanish Valley?
In half of years the last spring frost (32°) comes by April 19 and the first fall frost by October 21, about 184 frost-free days, at Castle Valley 1se, UT.
What growing zone is Spanish Valley in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 2°.
What is the best time of year to visit Spanish Valley?
By one simple rule (highs of 62–84° and lows of 40° or more), May, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Spanish Valley getting warmer?
Yes: 1991–2020 averaged 2.3° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 98% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Spanish Valley.
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.