Kooskia, Idaho climate: Normal weather by month, frost dates and records
Kooskia's normal year runs from 24°F December nights to 89°F August afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.6°C, December lows of −4°C, August highs of 32°C.
- NOAA stationKooskia (5 mi SSE)
- Station IDUSC00105013
- Location46.07°N 115.93°W
- Elevation2,330 ft (710 m)
- Population556
On October 23, the normal high in Kooskia is 58°F and the normal low 35°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Kooskia.
- Jan 38° 25°
- Feb 44° 26°
- Mar 52° 31°
- Apr 59° 36°
- May 68° 43°
- Jun 74° 48°
- Jul 86° 54°
- Aug 89° 51°
- Sep 77° 45°
- Oct 62° 37°
- Nov 47° 29°
- Dec 38° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Kooskia each month?
August is the warmest month, with normal highs of 89°F; December the coldest, with normal lows of 24°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 38°F | 25°F | 31.3°F | – | <1 | 28 | 9 h |
| February | 44°F | 26°F | 35.0°F | – | <1 | 22 | 10 h 20 min |
| March | 52°F | 31°F | 41.1°F | – | <1 | 19 | 11 h 50 min |
| April | 59°F | 36°F | 47.0°F | – | <1 | 9 | 13 h 30 min |
| May | 68°F | 43°F | 55.8°F | – | <1 | 2 | 15 h |
| June | 74°F | 48°F | 61.3°F | – | 1 | <1 | 15 h 40 min |
| July | 86°F | 54°F | 69.5°F | – | 10 | <1 | 15 h 30 min |
| August | 89°F | 51°F | 70.2°F | – | 15 | <1 | 14 h 10 min |
| September | 77°F | 45°F | 61.1°F | – | 3 | 1 | 12 h 40 min |
| October | 62°F | 37°F | 49.6°F | – | <1 | 8 | 11 h |
| November | 47°F | 29°F | 37.7°F | – | <1 | 20 | 9 h 30 min |
| December | 38°F | 24°F | 31.1°F | – | <1 | 28 | 8 h 40 min |
| Year (annual) | 61°F | 37°F | 49.2°F | – | 29 | 138 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 3°C | −4°C | −0.4°C |
| February | 7°C | −3°C | 1.7°C |
| March | 11°C | −1°C | 5.1°C |
| April | 15°C | 2°C | 8.3°C |
| May | 20°C | 6°C | 13.2°C |
| June | 23°C | 9°C | 16.3°C |
| July | 30°C | 12°C | 20.8°C |
| August | 32°C | 11°C | 21.2°C |
| September | 25°C | 7°C | 16.2°C |
| October | 17°C | 3°C | 9.8°C |
| November | 8°C | −2°C | 3.2°C |
| December | 3°C | −4°C | −0.5°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Kamiah (12 miles away), gets 11 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00105013; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Kooskia?
Normal highs sit between 65°F and 85°F in May, June and September.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00105013.
When is the last frost in Kooskia?
In Kooskia, the last spring frost (32°F) comes after April 30 in half of years and after May 13 in one year in ten; the first autumn frost comes before October 11 in half of years and before September 19 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 301 year in 10 after May 13; 9 in 10 after April 14
- First autumn frost, half of years before
- October 111 year in 10 before September 19; 9 in 10 before October 27
NOAA puts the median frost-free season at 162 days, and the season without a hard freeze (28°F) at 197 days.
A hard freeze (28°F) comes after April 11 in half of springs and before October 26 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Kooskia in zone 7a in ZIP code 83536, the nearest ZIP area.
Frost dates for every NOAA station in Idaho · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00105013; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Kooskia?
In a normal year in Kooskia, 29 days a year reach 90°F (3 of them 100°F or more) and 138 nights fall to 32°F or colder.
- Days at 90°F or more
- 29a normal year
- Days at 100°F or more
- 3a normal year
- Nights at 32°F or colder
- 138a normal year
- Days that stay below freezing
- 18high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00105013.
How sunny is Kooskia?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Kooskia, 3.8 kWh per square metre a day. July is the sunniest month (89%) and December the cloudiest (52%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 56% | 1.3 |
| February | 58% | 2.0 |
| March | 59% | 3.1 |
| April | 64% | 4.4 |
| May | 68% | 5.6 |
| June | 73% | 6.4 |
| July | 89% | 7.4 |
| August | 86% | 6.2 |
| September | 79% | 4.4 |
| October | 67% | 2.6 |
| November | 56% | 1.4 |
| December | 52% | 1.0 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Kooskia need?
A normal year in Kooskia brings 6,176 heating degree days, 15% more than the median U.S. place (5,373), and 452 cooling degree days, 50% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,260 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,043 | 0 |
| February | 840 | 0 |
| March | 739 | 0 |
| April | 540 | 0 |
| May | 296 | 11 |
| June | 147 | 34 |
| July | 29 | 169 |
| August | 33 | 194 |
| September | 160 | 43 |
| October | 479 | 1 |
| November | 819 | 0 |
| December | 1,051 | 0 |
| Year (annual) | 6,176 | 452 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00105013. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Kooskia's climate compare?
Kooskia is warmer than 64 of the other 84 places with their own NOAA record in Idaho. Across the 7,247 U.S. stations with normals, its annual mean of 49.2°F is warmer than 37%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Kooskia share this climate record?
Stites has no NOAA station with 1991-2020 normals of its own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Stites, ID187 people · 2 mi NW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Kooskia's climate
What is the coldest month in Kooskia?
December, with a normal high of 38°F and a normal low of 24°F. The warmest is August (89°F by day, 51°F at night).
Does it snow in Kooskia?
Yes. NOAA publishes no 1991-2020 snowfall normal for Kooskia's NOAA station; the nearest record that keeps one, Kamiah (12 miles away), records 11 inches of snow in a normal year.
What plant hardiness zone is Kooskia in?
The USDA's 2023 map puts Kooskia in zone 7a in ZIP code 83536, the nearest ZIP area.
How late can frost come in Kooskia?
In half of years the last 32°F night comes after April 30; in one year in ten it comes after May 13. Waiting until May 13 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Idaho climateThe statewide normals and every place in the state
- Kamiah, ID12 miles from this station, 50.9°F a year
- Grangeville, ID12 miles from this station, 47.5°F a year
- Lowell Three Rivers, ID17 miles from this station, 51.8°F a year
- Nezperce, ID19 miles from this station, 44.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made