Tyhee is among the driest of U.S. towns: 12 inches of precipitation a year
Midsummer highs settle at about 88°. In January, nights here are colder than in 75% of U.S. towns. Compared with 1901–2000, the average now sits 0.9° higher. Keep the boiler serviced for the months from October to April, which average under 50°.
A year in Tyhee at a glance
Each month’s typical high and low, and what it brings.
What stands out about Tyhee’s climate
Compared with towns across the U.S., with Tyhee’s place in Idaho beside it.
What a year in Tyhee feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 137 frost-free days a year
In half of years the last 32° night comes by May 16 and the first by October 2. Frost and day counts come from NOAA’s station at Pocatello 2 Ne, ID, 5 miles from the town’s center, 360 ft higher.
The 2023 USDA map puts Tyhee’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −9°. 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 39 inches of snow a winter
Snow, measured at Pocatello Rgnl Airport, falls mostly in December. Precipitation (rain plus melted snow) adds up to 12 inches a year; May is the wettest month and July the driest. Rain or snow falls on about 93 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Tyhee
91% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Pocatello 2 Ne, ID.
Living with Tyhee’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
137 frost-free days in zone 6a. The last frost comes by May 16 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 2.
Months with highs of 62–84° and lows of 40° or more: May, June and September.
Parks & trails →Of the yearly building losses FEMA expects in Tyhee from natural hazards, river flooding is the largest share (36%); heat waves, cold waves, winter storms and ice storms together are 46%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Tyhee and its neighbors
Every town next door is within a degree of Tyhee in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Tyhee’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 |
|---|---|---|---|---|
| Tyhee, ID | 17° | 88° | 12" | 39" |
| Gallup, NM | 17° | 88° | 10" | 34" |
| Wellington, CO | 16° | 88° | 14" | 34" |
| Spring Creek, NV | 15° | 89° | 14" | 41" |
| Lockwood, MT | 15° | 88° | 15" | 35" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Tyhee averaged 0.9° warmer than the 1900s. The biggest change is in January (+2.8°).
A smaller shift than in 82% 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 Tyhee compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Tyhee’s place among Idaho’s.
Tyhee weather by month
Highs, lows and precipitation from NOAA’s grid at Tyhee’s center; snow, wet days and snow on the ground from Pocatello Rgnl Airport. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 33° | 17° | 1.0" | 8.5" | 11 | 14 | 16° – 33° |
| February | 38° | 20° | 0.9" | 7.6" | 9 | 10 | 20° – 38° |
| March | 49° | 27° | 1.2" | 4.1" | 9 | 3 | 33° – 44° |
| April | 58° | 32° | 1.3" | 2.6" | 10 | 1 | 40° – 51° |
| May | 68° | 40° | 1.5" | 0.4" | 9 | 0 | 48° – 60° |
| June | 77° | 47° | 1.1" | 0.0" | 6 | 0 | 57° – 68° |
| July | 88° | 53° | 0.5" | 0.0" | 4 | 0 | 60° – 75° |
| August | 87° | 52° | 0.7" | 0.0" | 4 | 0 | 63° – 73° |
| September | 76° | 43° | 1.1" | 0.0" | 5 | 0 | 56° – 63° |
| October | 61° | 33° | 1.0" | 1.2" | 6 | 1 | 39° – 53° |
| November | 45° | 24° | 0.9" | 4.0" | 8 | 4 | 26° – 42° |
| December | 33° | 17° | 1.1" | 10.1" | 11 | 15 | 20° – 31° |
| Year | 59° | 34° | 12.1" | 38.5" | 93 | 47 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 16° to 33°. September is the most reliable, staying within 7°.
Where Tyhee’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 Tyhee’s center.
- Snow: Pocatello Rgnl Airport.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Pocatello 2 Ne, ID, 5 miles from the town’s center, 360 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 Tyhee’s climate
What is the weather like in Tyhee?
A typical July afternoon reaches 88°, a January night drops to 17°, and about 39 inches of snow falls in a normal winter. Colder January nights than 75% of U.S. towns; hotter July afternoons than 67% of U.S. towns.
How cold does it get in Tyhee in winter?
January nights average 17°. About 150 nights a year reach 32° or below and 4 reach 0° or below. In the coldest January of the last 30 years the month averaged 16°.
How much snow does Tyhee get?
About 39 inches in a normal winter at Pocatello Rgnl Airport, most of it in December, with snow on the ground about 47 days a year.
How hot does it get in Tyhee?
July, with a typical high of 88° and a low of 53°. About 41 days a year reach 90° and 3 reach 100° (Pocatello 2 Ne, ID).
When is the first and last frost in Tyhee?
In half of years the last spring frost (32°) comes by May 16 and the first fall frost by October 2, about 137 frost-free days, at Pocatello 2 Ne, ID.
What growing zone is Tyhee in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −9°.
What is the best time of year to visit Tyhee?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Tyhee getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 82% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Tyhee.
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.