Lowman, Idaho climate: Normal weather by month, frost dates and records
Lowman's normal year runs from 16°F December nights to 87°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.8°C, December lows of −9°C, July highs of 30°C.
- NOAA stationLowman
- Station IDUSC00105414
- Location44.08°N 115.62°W
- Elevation3,920 ft (1,195 m)
- Population (census place)42
On October 22, the normal high in Lowman is 57°F and the normal low 26°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Lowman.
- Jan 34° 16°
- Feb 40° 18°
- Mar 49° 25°
- Apr 56° 30°
- May 68° 35°
- Jun 77° 41°
- Jul 87° 45°
- Aug 86° 42°
- Sep 76° 37°
- Oct 61° 28°
- Nov 43° 22°
- Dec 33° 16°
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 Lowman each month?
July is the warmest month, with normal highs of 87°F; December the coldest, with normal lows of 16°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 34°F | 16°F | 24.8°F | – | <1 | 31 | 9 h 10 min |
| February | 40°F | 18°F | 28.9°F | – | <1 | 28 | 10 h 30 min |
| March | 49°F | 25°F | 36.9°F | – | <1 | 28 | 11 h 50 min |
| April | 56°F | 30°F | 43.3°F | – | <1 | 19 | 13 h 20 min |
| May | 68°F | 35°F | 51.5°F | – | <1 | 9 | 14 h 40 min |
| June | 77°F | 41°F | 58.9°F | – | 2 | 4 | 15 h 30 min |
| July | 87°F | 45°F | 65.7°F | – | 9 | <1 | 15 h 10 min |
| August | 86°F | 42°F | 63.7°F | – | 11 | 2 | 14 h |
| September | 76°F | 37°F | 56.2°F | – | 1 | 11 | 12 h 40 min |
| October | 61°F | 28°F | 44.3°F | – | <1 | 23 | 11 h 10 min |
| November | 43°F | 22°F | 32.4°F | – | <1 | 27 | 9 h 40 min |
| December | 33°F | 16°F | 24.7°F | – | <1 | 30 | 8 h 50 min |
| Year (annual) | 59°F | 30°F | 44.3°F | – | 23 | 211 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 1°C | −9°C | −4.0°C |
| February | 5°C | −8°C | −1.7°C |
| March | 9°C | −4°C | 2.7°C |
| April | 14°C | −1°C | 6.3°C |
| May | 20°C | 2°C | 10.8°C |
| June | 25°C | 5°C | 14.9°C |
| July | 30°C | 7°C | 18.7°C |
| August | 30°C | 5°C | 17.6°C |
| September | 24°C | 3°C | 13.4°C |
| October | 16°C | −2°C | 6.8°C |
| November | 6°C | −5°C | 0.2°C |
| December | 1°C | −9°C | −4.1°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Garden Valley (17 miles away), gets 69 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00105414; 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 Lowman?
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 USC00105414.
When is the last frost in Lowman?
In Lowman, the last spring frost (32°F) comes after June 6 in half of years and after July 1 in one year in ten; the first autumn frost comes before September 4 in half of years and before August 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
- June 61 year in 10 after July 1; 9 in 10 after May 18
- First autumn frost, half of years before
- September 41 year in 10 before August 19; 9 in 10 before September 24
NOAA puts the median frost-free season at 87 days, and the season without a hard freeze (28°F) at 129 days.
A hard freeze (28°F) comes after May 15 in half of springs and before September 23 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Lowman in zone 6b in ZIP code 83622, 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 USC00105414; 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 Lowman?
In a normal year in Lowman, 23 days a year reach 90°F (1 of them 100°F or more) and 211 nights fall to 32°F or colder.
- Days at 90°F or more
- 23a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 211a normal year
- Days that stay below freezing
- 30high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00105414.
How sunny is Lowman?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Lowman, 4.3 kWh per square metre a day. July is the sunniest month (89%) and December the cloudiest (58%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 64% | 1.6 |
| February | 66% | 2.6 |
| March | 65% | 3.6 |
| April | 70% | 5.1 |
| May | 71% | 6.0 |
| June | 78% | 7.0 |
| July | 89% | 7.7 |
| August | 87% | 6.5 |
| September | 83% | 4.9 |
| October | 73% | 3.1 |
| November | 64% | 1.8 |
| December | 58% | 1.3 |
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 Lowman need?
A normal year in Lowman brings 7,685 heating degree days, 43% more than the median U.S. place (5,373), and 148 cooling degree days, 84% 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 1,537 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,248 | 0 |
| February | 1,012 | 0 |
| March | 870 | 0 |
| April | 651 | 0 |
| May | 419 | 1 |
| June | 199 | 15 |
| July | 54 | 75 |
| August | 88 | 48 |
| September | 272 | 9 |
| October | 642 | 0 |
| November | 979 | 0 |
| December | 1,251 | 0 |
| Year (annual) | 7,685 | 148 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00105414. 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 Lowman's climate compare?
Lowman is warmer than 25 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 44.3°F is warmer than 17%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Questions about Lowman's climate
What is the coldest month in Lowman?
December, with a normal high of 33°F and a normal low of 16°F. The warmest is July (87°F by day, 45°F at night).
Does it snow in Lowman?
Yes. NOAA publishes no 1991-2020 snowfall normal for Lowman's NOAA station; the nearest record that keeps one, Garden Valley (17 miles away), records 69 inches of snow in a normal year.
What plant hardiness zone is Lowman in?
The USDA's 2023 map puts Lowman in zone 6b in ZIP code 83622, the nearest ZIP area.
How late can frost come in Lowman?
In half of years the last 32°F night comes after June 6; in one year in ten it comes after July 1. Waiting until July 1 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Idaho climateThe statewide normals and every place in the state
- Garden Valley, ID17 miles from this station, 46.8°F a year
- Idaho City, ID20 miles from this station, 43.8°F a year
- Deadwood Lodge, ID26 miles from this station, 39.3°F a year
- Ola, ID34 miles from this station, 47.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made