Pocatello, Idaho climate: Normal weather by month, frost dates and records

What is the weather like in Pocatello each month?

July is the warmest month, with normal highs of 89°F; January the coldest, with normal lows of 17°F. The most precipitation falls in May (1.40 in), the least in July (0.51 in).

Each month has its own page with the day-by-day normals, the month's records and its recent years:

• Jan
• Feb
• Mar
• Apr
• May
• Jun
• Jul
• Aug
• Sep
• Oct
• Nov
• Dec

When is the best weather to visit Pocatello?

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.

When is the last frost in Pocatello?

In Pocatello, the last spring frost (32°F) comes after May 23 in half of years and after June 13 in one year in ten; the first autumn frost comes before September 18 in half of years and before September 3 in one year in ten.

Last spring frost, half of years after

May 231 year in 10 after June 13; 9 in 10 after May 6

First autumn frost, half of years before

September 181 year in 10 before September 3; 9 in 10 before October 4

NOAA puts the median frost-free season at 117 days, and the season without a hard freeze (28°F) at 147 days.

A hard freeze (28°F) comes after May 6 in half of springs and before October 1 in half of autumns.

The USDA's 2023 Plant Hardiness Zone Map puts Pocatello in zones 6a to 6b across its 2 ZIP code areas (6b in 83201, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Pocatello's NOAA station is in zone 6a: the coldest night of a typical year reaches −10°F (30 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.

Frost dates for every NOAA station in Idaho · Frost dates by ZIP code

What hardiness zone is each Pocatello ZIP code in?

The USDA's 2023 map gives each ZIP code area one zone. Pocatello's 2 ZIP code areas run from zone 6a to 6b: 1 in 6a and 1 in 6b. Each ZIP's frost dates are in the frost tool.

How hot and how cold does it get in Pocatello?

In a normal year in Pocatello, 39 days a year reach 90°F (2 of them 100°F or more), 167 nights fall to 32°F or colder and 93 days bring measurable precipitation.

Days at 90°F or more

39a normal year

Days at 100°F or more

2a normal year

Nights at 32°F or colder

167a normal year

Days that stay below freezing

36high of 32°F or less

Days with 0.01 inch of precipitation

93a normal year

Days with 1 inch of snow or more

13a normal year

The highest temperature in Pocatello's official record (kept by the National Weather Service since 1939) is 104°F, on July 22, 2000; the lowest is −33°F, on February 1, 1985.

The wettest calendar year on that record is 1983, with 20.33 in; the snowiest season is 1992–93, with 93.3 inches.

How humid and windy is Pocatello, and how clear are its skies?

The summer (June-August) dew point averages 42°F. The muggiest month is July, with an average dew point of 43°F; the driest air comes in December (18°F). March is the windiest month (11.6 mph on average), and August has the most clear or nearly clear hours (82%).

How sunny is Pocatello?

Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Pocatello, 4.5 kWh per square metre a day. July is the sunniest month (88%) and December the cloudiest (60%). Among the 459 U.S. places of 50,000 or more, that ranks tied 210th (with 32 others) in sunshine.

How much heating and cooling does Pocatello need?

A normal year in Pocatello brings 6,954 heating degree days, 29% more than the median U.S. place (5,373), and 431 cooling degree days, 53% 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 2,194 growing degree days a year above 50°F.

Has Pocatello been warmer than normal lately?

2025 averaged 49.4°F, 2.4°F above the 1991-2020 normal of 47.0°F. 3 of the 5 complete years since 2021 ran warmer than the normal.

Over 69 complete years from 1950 to 2025, the station's annual mean temperature rose at a fitted 4.4°F per century (+0.24°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.

Which places near Pocatello share this climate record?

3 places have no NOAA station with 1991-2020 normals of their 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.

• Chubbuck, ID16,577 people · 6 mi E
• Tyhee, ID1,475 people · 6 mi E
• Arbon Valley, ID604 people · 2 mi S

What do Pocatello's other NOAA stations record?

2 more NOAA stations keep 1991-2020 normals in or near Pocatello. This page uses Pocatello Regional Airport; the others differ by site and elevation:

Nearby and next

• Pocatello in OctoberThis month day by day, its records and recent years
• Idaho climateThe statewide normals and every place in the state
• Fort Hall, ID12 miles from this station, 45.4°F a year
• Aberdeen, ID13 miles from this station, 45.4°F a year
• American Falls, ID14 miles from this station, 48.7°F a year
• Blackfoot, ID22 miles from this station, 47.2°F a year
• Compare two placesMonth by month, side by side

Download these normals (CSV) · JSON · How these figures are made