Small (6 mi N), Idaho climate: Climate normals at a NOAA weather station
Small (6 mi N)'s normal year runs from 11°F January nights to 83°F July afternoons, with 12.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 5.8°C, January lows of −12°C, July highs of 29°C, 317 mm of precipitation a year.
- NOAA stationSmall (6 mi N)
- Station IDUSC00108500
- Location44.30°N 112.41°W
- Elevation5,740 ft (1,750 m)
On October 22, the normal high in Small (6 mi N) is 51°F and the normal low 28°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Small (6 mi N).
- Jan 29° 11°
- Feb 32° 13°
- Mar 43° 23°
- Apr 54° 30°
- May 65° 38°
- Jun 73° 44°
- Jul 83° 51°
- Aug 82° 49°
- Sep 71° 41°
- Oct 55° 30°
- Nov 40° 20°
- Dec 29° 12°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Small (6 mi N) each month?
July is the warmest month, with normal highs of 83°F; January the coldest, with normal lows of 11°F. The most precipitation falls in May (1.79 in), the least in August (0.78 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 29°F | 11°F | 19.7°F | 0.85 | – | <1 | 31 | 9 h 10 min |
| February | 32°F | 13°F | 22.8°F | 0.86 | – | <1 | 28 | 10 h 30 min |
| March | 43°F | 23°F | 33.1°F | 0.80 | – | <1 | 27 | 11 h 50 min |
| April | 54°F | 30°F | 42.2°F | 1.08 | – | <1 | 19 | 13 h 20 min |
| May | 65°F | 38°F | 51.5°F | 1.79 | – | <1 | 6 | 14 h 40 min |
| June | 73°F | 44°F | 58.4°F | 1.54 | – | 1 | 1 | 15 h 30 min |
| July | 83°F | 51°F | 67.1°F | 0.81 | – | 6 | <1 | 15 h 10 min |
| August | 82°F | 49°F | 65.8°F | 0.78 | – | 3 | <1 | 14 h 10 min |
| September | 71°F | 41°F | 56.2°F | 0.97 | – | <1 | 2 | 12 h 40 min |
| October | 55°F | 30°F | 42.6°F | 0.97 | – | <1 | 19 | 11 h |
| November | 40°F | 20°F | 30.0°F | 0.80 | – | <1 | 28 | 9 h 40 min |
| December | 29°F | 12°F | 20.7°F | 1.23 | – | <1 | 31 | 8 h 50 min |
| Year (annual) | 55°F | 30°F | 42.5°F | 12.48 | – | 10 | 191 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −2°C | −12°C | −6.8°C | 22 mm |
| February | 0°C | −10°C | −5.1°C | 22 mm |
| March | 6°C | −5°C | 0.6°C | 20 mm |
| April | 12°C | −1°C | 5.7°C | 27 mm |
| May | 18°C | 4°C | 10.8°C | 45 mm |
| June | 23°C | 7°C | 14.7°C | 39 mm |
| July | 29°C | 10°C | 19.5°C | 21 mm |
| August | 28°C | 10°C | 18.8°C | 20 mm |
| September | 22°C | 5°C | 13.4°C | 25 mm |
| October | 13°C | −1°C | 5.9°C | 25 mm |
| November | 4°C | −7°C | −1.1°C | 20 mm |
| December | −2°C | −11°C | −6.3°C | 31 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Dubois (11 miles away), gets 47 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00108500; 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.
Which months are mildest at Small (6 mi N)?
Normal highs sit between 65°F and 85°F in June, July, August 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 USC00108500.
When is the last frost at Small (6 mi N)?
In Small (6 mi N), the last spring frost (32°F) comes after June 5 in half of years and after June 21 in one year in ten; the first autumn frost comes before September 20 in half of years and before September 3 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
- June 51 year in 10 after June 21; 9 in 10 after May 11
- First autumn frost, half of years before
- September 201 year in 10 before September 3; 9 in 10 before October 4
NOAA puts the median frost-free season at 106 days, and the season without a hard freeze (28°F) at 143 days.
A hard freeze (28°F) comes after May 10 in half of springs and before October 2 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Small (6 mi N) in zone 5b in ZIP code 83423, 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 USC00108500; 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 at Small (6 mi N)?
In a normal year in Small (6 mi N), 10 days a year reach 90°F and 191 nights fall to 32°F or colder.
- Days at 90°F or more
- 10a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 191a normal year
- Days that stay below freezing
- 73high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00108500.
How sunny is it at Small (6 mi N)?
Over a year 76% of the sunlight that would reach the ground under clear skies gets through the clouds at Small (6 mi N), 4.3 kWh per square metre a day. July is the sunniest month (85%) and December the cloudiest (64%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 1.8 |
| February | 72% | 2.9 |
| March | 72% | 4.0 |
| April | 71% | 5.2 |
| May | 72% | 6.1 |
| June | 78% | 7.0 |
| July | 85% | 7.3 |
| August | 85% | 6.3 |
| September | 82% | 4.9 |
| October | 75% | 3.2 |
| November | 68% | 2.0 |
| December | 64% | 1.4 |
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 many heating and cooling degree days does Small (6 mi N) record?
A normal year at Small (6 mi N) brings 8,387 heating degree days, 56% more than the median U.S. place (5,373), and 208 cooling degree days, 77% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,650 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,404 | 0 |
| February | 1,182 | 0 |
| March | 991 | 0 |
| April | 686 | 0 |
| May | 419 | 1 |
| June | 213 | 15 |
| July | 44 | 108 |
| August | 53 | 76 |
| September | 274 | 8 |
| October | 696 | 0 |
| November | 1,052 | 0 |
| December | 1,375 | 0 |
| Year (annual) | 8,387 | 208 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00108500. 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.
Have recent years at Small (6 mi N) been warmer than normal?
2024 averaged 42.9°F, 0.4°F above the 1991-2020 normal of 42.5°F. 2 of the 2 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 42.6°F | +0.1°F | 13.88 |
| 2024 | 42.9°F | +0.4°F | 10.70 |
Source: observed years: ACIS, station USC00108500. A year counts only with all twelve months complete.
How does Small (6 mi N)'s climate compare?
Small (6 mi N) is warmer than 13 of the 85 places with their own NOAA record in Idaho, and wetter than 34. Across the 7,247 U.S. stations with normals, its annual mean of 42.5°F is warmer than 11%.
In the Köppen classification computed from these normals, Small (6 mi N) is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Questions about Small (6 mi N)'s climate
What is the coldest month at Small (6 mi N)?
January, with a normal high of 29°F and a normal low of 11°F. The warmest is July (83°F by day, 51°F at night).
Does it snow at Small (6 mi N)?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Dubois (11 miles away), records 47 inches of snow in a normal year.
What is the rainiest month at Small (6 mi N)?
May, with 1.79 in of precipitation in a normal year; the driest is August with 0.78 in.
What plant hardiness zone is Small (6 mi N) in?
The USDA's 2023 map puts Small (6 mi N) in zone 5b in ZIP code 83423, the nearest ZIP area.
How late can frost come at Small (6 mi N)?
In half of years the last 32°F night comes after June 5; in one year in ten it comes after June 21. Waiting until June 21 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Idaho climateThe statewide normals and every place in the state
- Dubois, ID11 miles from this station, 45.3°F a year
- Monteview, ID20 miles from this station, 41.6°F a year
- Hamer, ID24 miles from this station, 43.8°F a year
- Lima, MT25 miles from this station, 41.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made