Aberdeen, Idaho climate: Normal weather by month, frost dates and records
Aberdeen's normal year runs from 14°F January nights to 87°F July afternoons, with 9.6 inches of precipitation and 25 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.4°C, January lows of −10°C, July highs of 31°C, 243 mm of precipitation a year.
- NOAA stationAberdeen Experiment Station
- Station IDUSC00100010
- Location42.95°N 112.83°W
- Elevation4,405 ft (1,343 m)
- Population1,856
On October 14, the normal high in Aberdeen is 62°F and the normal low 31°F, and the chance of measurable rain or snow is 17%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Aberdeen.
- Jan 32° 14°
- Feb 37° 17°
- Mar 48° 26°
- Apr 58° 31°
- May 68° 40°
- Jun 77° 46°
- Jul 87° 51°
- Aug 87° 49°
- Sep 76° 40°
- Oct 61° 30°
- Nov 45° 22°
- Dec 33° 15°
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 Aberdeen each month?
July is the warmest month, with normal highs of 87°F; January the coldest, with normal lows of 14°F. The most precipitation falls in May (1.17 in), the least in July (0.41 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 32°F | 14°F | 23.0°F | 0.85 | 7.7 | 8 | <1 | 31 | 9 h 20 min |
| February | 37°F | 17°F | 27.3°F | 0.64 | 5.1 | 7 | <1 | 27 | 10 h 30 min |
| March | 48°F | 26°F | 36.9°F | 0.85 | 1.8 | 6 | <1 | 28 | 11 h 50 min |
| April | 58°F | 31°F | 44.3°F | 0.87 | 0.5 | 7 | <1 | 20 | 13 h 20 min |
| May | 68°F | 40°F | 53.8°F | 1.17 | 0.1 | 8 | <1 | 6 | 14 h 40 min |
| June | 77°F | 46°F | 61.4°F | 0.99 | 0.0 | 5 | 2 | 1 | 15 h 20 min |
| July | 87°F | 51°F | 69.1°F | 0.41 | 0.0 | 4 | 13 | <1 | 15 h |
| August | 87°F | 49°F | 67.7°F | 0.42 | 0.0 | 4 | 13 | <1 | 14 h |
| September | 76°F | 40°F | 58.4°F | 0.83 | 0.0 | 5 | 2 | 5 | 12 h 30 min |
| October | 61°F | 30°F | 45.8°F | 0.90 | 0.5 | 6 | <1 | 21 | 11 h 10 min |
| November | 45°F | 22°F | 33.4°F | 0.66 | 2.0 | 6 | <1 | 27 | 9 h 50 min |
| December | 33°F | 15°F | 23.8°F | 0.99 | 7.5 | 8 | <1 | 30 | 9 h |
| Year (annual) | 59°F | 32°F | 45.4°F | 9.58 | 25.2 | 72 | 30 | 196 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −10°C | −5.0°C | 22 mm | 20 cm |
| February | 3°C | −8°C | −2.6°C | 16 mm | 13 cm |
| March | 9°C | −4°C | 2.7°C | 22 mm | 5 cm |
| April | 14°C | −1°C | 6.8°C | 22 mm | 1 cm |
| May | 20°C | 4°C | 12.1°C | 30 mm | 0 cm |
| June | 25°C | 8°C | 16.3°C | 25 mm | 0 cm |
| July | 31°C | 11°C | 20.6°C | 10 mm | 0 cm |
| August | 30°C | 9°C | 19.8°C | 11 mm | 0 cm |
| September | 25°C | 5°C | 14.7°C | 21 mm | 0 cm |
| October | 16°C | −1°C | 7.7°C | 23 mm | 1 cm |
| November | 7°C | −6°C | 0.8°C | 17 mm | 5 cm |
| December | 1°C | −10°C | −4.6°C | 25 mm | 19 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00100010; 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 Aberdeen?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September has the fewest days with rain (5).
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 USC00100010.
When is the last frost in Aberdeen?
In Aberdeen, the last spring frost (32°F) comes after May 21 in half of years and after June 13 in one year in ten; the first autumn frost comes before September 20 in half of years and before September 2 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
- May 211 year in 10 after June 13; 9 in 10 after May 4
- First autumn frost, half of years before
- September 201 year in 10 before September 2; 9 in 10 before October 4
NOAA puts the median frost-free season at 118 days, and the season without a hard freeze (28°F) at 149 days.
A hard freeze (28°F) comes after May 3 in half of springs and before October 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Aberdeen in zone 5b in ZIP code 83210, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Aberdeen's NOAA station is in zone 5b: the coldest night of a typical year reaches −11°F (25 complete years).
Frost dates for every NOAA station in Idaho · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00100010; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 Aberdeen?
In a normal year in Aberdeen, 30 days a year reach 90°F (1 of them 100°F or more), 196 nights fall to 32°F or colder and 72 days bring measurable precipitation.
- Days at 90°F or more
- 30a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 196a normal year
- Days that stay below freezing
- 39high of 32°F or less
- Days with 0.01 inch of precipitation
- 72a normal year
- Days with 1 inch of snow or more
- 11a normal year
The highest temperature in this station's record (since 1914) is 104°F, on July 28, 1934; the lowest is −42°F, on January 19, 1922.
The wettest calendar year on that record is 2016, with 14.72 in; the snowiest season is 2016–17, with 69.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00100010; records: ACIS (NOAA Regional Climate Centers), station USC00100010. Records use complete months only; a month missing more than three days is left out.
How sunny is Aberdeen?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Aberdeen, 4.5 kWh per square metre a day. July is the sunniest month (88%) and December the cloudiest (60%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 67% | 1.9 |
| February | 68% | 2.8 |
| March | 71% | 4.0 |
| April | 72% | 5.3 |
| May | 77% | 6.5 |
| June | 84% | 7.5 |
| July | 88% | 7.5 |
| August | 88% | 6.6 |
| September | 85% | 5.2 |
| October | 79% | 3.5 |
| November | 69% | 2.1 |
| December | 60% | 1.5 |
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 Aberdeen need?
A normal year in Aberdeen brings 7,455 heating degree days, 39% more than the median U.S. place (5,373), and 346 cooling degree days, 62% 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 2,006 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,302 | 0 |
| February | 1,056 | 0 |
| March | 870 | 0 |
| April | 620 | 0 |
| May | 354 | 6 |
| June | 151 | 42 |
| July | 27 | 154 |
| August | 39 | 125 |
| September | 217 | 19 |
| October | 596 | 0 |
| November | 948 | 0 |
| December | 1,276 | 0 |
| Year (annual) | 7,455 | 346 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00100010. 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.
Has Aberdeen been warmer than normal lately?
2025 averaged 47.2°F, 1.8°F above the 1991-2020 normal of 45.4°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 47.4°F | +2.0°F | – | 19.0 |
| 2022 | 43.6°F | −1.8°F | 7.84 | 30.5 |
| 2023 | 44.2°F | −1.2°F | 10.33 | 41.7 |
| 2024 | 46.3°F | +0.9°F | 9.50 | 50.5 |
| 2025 | 47.2°F | +1.8°F | 8.82 | 17.4 |
Over 64 complete years from 1949 to 2025, the station's annual mean temperature rose at a fitted 2.1°F per century (+0.12°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00100010; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Aberdeen's climate compare?
Aberdeen is warmer than 32 of the other 84 places with their own NOAA record in Idaho, and wetter than 6. Across the 7,247 U.S. stations with normals, its annual mean of 45.4°F is warmer than 21%.
In the Köppen classification computed from these normals, Aberdeen is BSk: cold semi-arid steppe. 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 Aberdeen's climate
What is the coldest month in Aberdeen?
January, with a normal high of 32°F and a normal low of 14°F. The warmest is July (87°F by day, 51°F at night).
Does it snow in Aberdeen?
Yes: 25 inches in a normal year, falling on 17 days with 0.1 inch or more, the most in January (7.7 inches).
What is the rainiest month in Aberdeen?
May, with 1.17 in of precipitation in a normal year; the driest is July with 0.41 in.
What plant hardiness zone is Aberdeen in?
The USDA's 2023 map puts Aberdeen in zone 5b in ZIP code 83210, the nearest ZIP area. By the same method at Aberdeen's NOAA station, the coldest night of a typical year reaches −11°F (25 years, 1991-2020): zone 5b.
How late can frost come in Aberdeen?
In half of years the last 32°F night comes after May 21; in one year in ten it comes after June 13. Waiting until June 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
- American Falls, ID11 miles from this station, 48.7°F a year
- Pocatello, ID13 miles from this station, 47.0°F a year
- Massacre Rocks State Park, ID22 miles from this station, 47.3°F a year
- Fort Hall, ID22 miles from this station, 45.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made