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Pocatello, Idaho climate

BSk Cold semi-arid

Pocatello has a strongly seasonal cool-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is July with an average daily high near 91°F, while the coldest is December averaging around 21°F at night. Around 13 inches of precipitation falls each year, peaking in May (1.5 inches) and easing off in July (0.6 inches). Winters bring significant snowfall (30 inches of snow per year on average).

☀️ Summers

Hot

Highs near 91°F in July.

About 41 days a year above 90 °F

❄️ Winters

Cold

Lows near 21°F in December.

About 120 freezing nights a year

🌧️ Rain & snow

Fairly dry

About 13 in of rain a year, plus 30 in of snow.

Snow falls through the winter months

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Pocatello climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	36	41	52	61	71	80	91	89	78	63	47	36
Avg temp (°F)	29	31	42	49	57	66	75	73	64	51	38	29
Avg low (°F)	21	22	31	37	44	52	59	57	49	38	29	21
Precipitation (in)	1.1	1.0	1.3	1.4	1.5	1.2	0.6	0.9	1.0	1.0	1.0	1.2
Snowfall (in)	5.5	6.7	3.3	1.4	0.2	—	—	—	—	0.6	2.9	9.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	36	41	52	61	71	80
Avg temp (°F)	29	31	42	49	57	66
Avg low (°F)	21	22	31	37	44	52
Precipitation (in)	1.1	1.0	1.3	1.4	1.5	1.2
Snowfall (in)	5.5	6.7	3.3	1.4	0.2	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	91	89	78	63	47	36
Avg temp (°F)	75	73	64	51	38	29
Avg low (°F)	59	57	49	38	29	21
Precipitation (in)	0.6	0.9	1.0	1.0	1.0	1.2
Snowfall (in)	—	—	—	0.6	2.9	9.1

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	8	7	9	8	9	5	4	5	3	7	6	9
Days with high ≥ 90°F (days)	—	—	—	—	0.3	5	19	15	2	—	—	—
Days with low ≤ 32°F (days)	26	20	16	8	2	—	—	—	0.2	7	18	24
Days with snowfall ≥ 1 in (days)	3	2	1	0.5	0.1	—	—	—	—	0.4	1	3

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	8	7	9	8	9	5
Days with high ≥ 90°F (days)	—	—	—	—	0.3	5
Days with low ≤ 32°F (days)	26	20	16	8	2	—
Days with snowfall ≥ 1 in (days)	3	2	1	0.5	0.1	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	4	5	3	7	6	9
Days with high ≥ 90°F (days)	19	15	2	—	—	—
Days with low ≤ 32°F (days)	—	—	0.2	7	18	24
Days with snowfall ≥ 1 in (days)	—	—	—	0.4	1	3

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	64	65	65	63	60	48	38	40	40	51	61	66
Clear days (≤ 30% cloud)	5	4	5	5	6	10	15	13	14	11	6	5
Partly cloudy days (30–70%)	11	10	10	10	11	11	10	12	9	9	11	10
Cloudy days (≥ 70%)	16	15	16	15	14	9	6	6	7	11	13	17
Relative humidity (%)	86	78	66	59	54	46	37	36	42	54	69	83
Wind speed (mph)	5.8	6.3	6.7	6.4	5.7	5.8	5.1	5.0	5.0	5.5	5.7	5.7

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	64	65	65	63	60	48
Clear days (≤ 30% cloud)	5	4	5	5	6	10
Partly cloudy days (30–70%)	11	10	10	10	11	11
Cloudy days (≥ 70%)	16	15	16	15	14	9
Relative humidity (%)	86	78	66	59	54	46
Wind speed (mph)	5.8	6.3	6.7	6.4	5.7	5.8

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	38	40	40	51	61	66
Clear days (≤ 30% cloud)	15	13	14	11	6	5
Partly cloudy days (30–70%)	10	12	9	9	11	10
Cloudy days (≥ 70%)	6	6	7	11	13	17
Relative humidity (%)	37	36	42	54	69	83
Wind speed (mph)	5.1	5.0	5.0	5.5	5.7	5.7

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Pocatello City (NOAA GHCN station USC00107210), inside the city.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →