Star Camp · Photo: Tamanoeconomico · CC BY-SA 4.0Star’s winters are milder and less snowy than most of the U.S.
A typical July afternoon reaches 93°, a January night drops to 24°, and about 7 inches of snow falls in a normal winter.
A year in Star at a glance
Each month’s typical high and low, and what it brings.
What stands out about Star’s climate
Compared with towns across the U.S., with Star’s place in Idaho beside it.
What a year in Star feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 168 frost-free days a year
In half of years the last 32° night comes by April 30 and the first by October 17. Frost and day counts come from NOAA’s station at Emmett 2 E, ID, 11 miles from the town’s center, at about the same height.
The 2023 USDA map puts Star’s center in zone 7a: 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 7 inches of snow a winter
Snow, measured at Emmett 2 E, ID, falls mostly in December. Precipitation (rain plus melted snow) adds up to 11 inches a year; December is the wettest month and August the driest. Rain or snow falls on about 91 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Star
88% of the work is heating, so the furnace matters far more than the air conditioner. 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 Emmett 2 E, ID.
Living with Star’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
168 frost-free days in zone 7a. 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 17.
Months with highs of 62–84° and lows of 40° or more: May, June and September. 14 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Star from natural hazards, river flooding is the largest share (70%); heat waves, cold waves, winter storms and ice storms together are 8%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Star and its neighbors
Every town next door is within a degree of Star in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Star’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 |
|---|---|---|---|---|
| Star, ID | 24° | 93° | 11" | 7.4" |
| Los Lunas, NM | 23° | 92° | 10" | 5.1" |
| Chino Valley, AZ | 27° | 92° | 11" | 10" |
| Spanish Springs, NV | 25° | 91° | 10" | 6.8" |
| Dumas, TX | 23° | 93° | 18" | 9.1" |
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 Star averaged 0.9° warmer than the 1900s. The biggest change is in January (+2.0°).
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 Star compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Star’s place among Idaho’s.
Star weather by month
Highs, lows and precipitation from NOAA’s grid at Star’s center; snow, wet days and snow on the ground from Emmett 2 E, ID. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 39° | 24° | 1.5" | 1.7" | 11 | 7 | 18° – 38° |
| February | 47° | 27° | 1.0" | 1.4" | 9 | 3 | 29° – 44° |
| March | 58° | 33° | 1.2" | 0.1" | 11 | 0 | 41° – 50° |
| April | 65° | 37° | 1.1" | 0.1" | 10 | 0 | 46° – 56° |
| May | 74° | 45° | 1.4" | 0.0" | 9 | 0 | 53° – 65° |
| June | 83° | 51° | 0.8" | 0.0" | 6 | 0 | 63° – 75° |
| July | 93° | 58° | 0.2" | 0.0" | 2 | 0 | 65° – 81° |
| August | 91° | 56° | 0.2" | 0.0" | 2 | 0 | 68° – 77° |
| September | 81° | 48° | 0.4" | 0.0" | 4 | 0 | 60° – 68° |
| October | 66° | 37° | 0.8" | 0.0" | 6 | 0 | 44° – 58° |
| November | 50° | 30° | 1.2" | 0.5" | 10 | 1 | 33° – 46° |
| December | 39° | 24° | 1.5" | 3.6" | 12 | 6 | 23° – 37° |
| Year | 65° | 39° | 11.2" | 7.4" | 91 | 17 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 18° to 38°. September is the most reliable, staying within 8°.
Where Star’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 Star’s center.
- Snow: Emmett 2 E, ID.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Emmett 2 E, ID, 11 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 Star’s climate
What is the weather like in Star?
A typical July afternoon reaches 93°, a January night drops to 24°, and about 7 inches of snow falls in a normal winter. Milder January nights than 60% of U.S. towns; hotter July afternoons than 90% of U.S. towns.
How cold does it get in Star in winter?
January nights average 24°. About 131 nights a year reach 32° or below and 2 reach 0° or below. In the coldest January of the last 30 years the month averaged 18°.
How much snow does Star get?
About 7.4 inches in a normal winter at Emmett 2 E, ID, most of it in December, with snow on the ground about 17 days a year.
How hot does it get in Star?
July, with a typical high of 93° and a low of 58°. About 51 days a year reach 90° and 7 reach 100° (Emmett 2 E, ID).
When is the first and last frost in Star?
In half of years the last spring frost (32°) comes by April 30 and the first fall frost by October 17, about 168 frost-free days, at Emmett 2 E, ID.
What growing zone is Star in?
Zone 7a 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 Star?
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 Star 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 Star.
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.