During winter, brisk southwesterly winds often persist for days or weeks on end.  These winds may moderate cold winter conditions, producing unusually mild temperatures compared to surrounding areas.  There are usually a number of days each winter when temperatures remain below freezing.  Sub-zero temperatures usually occur only a few days each winter.  During especially cold outbreaks, snowfall may accumulate to a depth of a foot or more.  Cloudy and unsettled weather is common during the winter with measurable precipitation occurring on about one-third of the days.

Icy road conditions are common.  The Chubbuck Police Department offers safe winter driving tips and a vehicle preperation checklist.  You can also review the City's snow removal policy.

Spring months are normally wet and windy.  Winds of 20 to 30 mph may persist for days at a time. Weather conditions fluctuate quickly during the spring.  Afternoon temperatures in the 30s and 40s with precipitation in the form of rain or snow may occur after a period of sunny skies and afternoon temperatures in the 60s or 70s.

Thunderstorms are not uncommon, and are usually accompanied by rain showers and occasional snow.  Low elevations snow pack usually melts quickly during the spring, but high elevation snow pack can persist into late June.

Summer may begin suddenly with a rapid change to warm and dry weather conditions.  Home heating is usually not required after the first week in June, but chilly nights can persist into early July.  Showers and/or thunderstorms are common from late spring through summer. These storms often produce very localized precipitation.  Thunderstorms are seldom severe, and tornadoes occur infrequently in the area.  Brief heavy rain, lightning, small hail, and gusty winds may cause very localized damage at times. Long periods of excessively hot weather in July and August are uncommon.  Afternoon temperatures often rise into the 90s, however low humidity usually results in overnight temperatures in the 50s or even cooler.  The average growing season in Pocatello is around 120 days, extending from late May to late September.

Autumn ushers in cooler weather with daytime highs generally in the 70s in early fall dipping into the mid 40s by mid November with generally dry conditions.  Autumn storms are usually very fast moving, and seldom persist for more than a few days.  Sunny, warm days with cool nights are delightful for outdoor activities. Continuous home heating is seldom needed until mid October.

Snow flurries with quick melt off can start as soon as the last part of October.  The first cold wave with highs below 20° and lows around 0° or lower may arrive anytime between late November and Christmas.