Idaho Falls, ID weather and climate in 2025
Day
29 °C
Night
10 °C
Sea
0 °C
Precipitation
17 mm
in month
Rainy days
5 days
in month
Daylight
15 hours
average
Sunshine
12 hours
average
Humidity
41 %
Day
29 °C
Night
10 °C
Sea
0 °C
Precipitation
17 mm
in month
Rainy days
5 days
in month
Daylight
15 hours
average
Sunshine
12 hours
average
Humidity
41 %
Overview: Idaho Falls, ID
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Weather overview for Idaho Falls, ID
Weather overview
Idaho Falls, ID, experience distinctive four seasons with a wide range of weather patterns. The cold winters bring snowy days and chilly nights, while summers see warm temperatures perfect for enjoying outdoor activities. Spring and fall offer transitional weather with their own unique charm and less precipitation compared to the rest of the year. Idaho Falls doesn't have a sea, so sea temperatures are not a concern. Whether you're planning to visit the scenic waterfalls or engage in hiking, be prepared for changing temperatures and occasional rain throughout the year.
January weather
January in Idaho Falls is the heart of winter with freezing temperatures. The mercury hovers around a chilly -1 °C (31 °F) during the day and drops to -11 °C (13 °F) at night. The city experiences 10 days of snowy or rainy days, making it the perfect time to enjoy winter activities wrapped up in warm clothing.
February weather
February sees a slight rise in daytime temperatures to 2 °C (35 °F) but still requires heavy winter gear as night temperatures can be as low as -9 °C (16 °F). The city witnesses 9 days of precipitation, which could mean snowy streets and icy conditions.
March weather
March in Idaho Falls marks the beginning of spring. Day temperatures increase to 8 °C (47 °F), and snow begins to melt, although nights remain cold with an average low of -4 °C (25 °F). Expect 10 days of precipitation, signaling a mix of rain and the last snowfalls of the season.
April weather
April offers a more comfortable climate with an average high of 14 °C (57 °F), but evenings can still be brisk with minimum temperatures around 0 °C (31 °F). The city sees 9 days of wet days, suggesting frequent spring showers bringing the landscape to life.
May weather
May sees further warming with the thermometer showing an enjoyable average high of 19 °C (67 °F). At night, temperatures are milder, averaging 4 °C (38 °F). There are around 10 days of wet days, so it’s advisable to have an umbrella on hand for intermittent rain showers.
June weather
June in Idaho Falls kicks off the summer season with warm average highs of 24 °C (76 °F) and mild nights at 7 °C (45 °F). The city boasts the lowest number of wet days for the year with only 7 days, suggesting clear skies for most of the month.
July weather
July sees the peak of summer heat in Idaho Falls, with daytime temperatures soaring to an average high of 29 °C (85 °F). Nights are comfortably warm at a minimum of 10 °C (50 °F). Only 5 days of precipitation, so expect lots of sunshine and dry weather.
August weather
August continues to bask in the warmth with an average high of 29 °C (84 °F). Nights remain balmy with temperatures around 9 °C (49 °F). The number of wet days slightly increases to 5 days, but it's mostly sunny and perfect for enjoying the last days of summer.
September weather
September in Idaho Falls signals the beginning of fall with a noticeable drop in temperature, averaging a high of 23 °C (74 °F) and a low of 5 °C (40 °F). There are about 5 days of wet days, so while you might still have some warm afternoons, evenings can start to feel chilly.
October weather
October brings cooler days with a daytime high averaging 16 °C (61 °F) and nights starting to feel quite cold with an average low of 0 °C (32 °F). The city experiences 6 days of rainfall, so ensure to have a warm coat and possibly a waterproof layer.
November weather
November ushers in the colder weather with a significant drop in daytime temperature to 6 °C (43 °F) and night temperatures around -5 °C (22 °F). The city averages 9 days of wet days, which means potential snowfall as temperatures dip.
December weather
December is a full-on winter month in Idaho Falls, with short days and long nights. Expect an average high of -1 °C (31 °F) during the day and a frigid night temperature of -10 °C (13 °F). The city anticipates about 10 days of precipitation, likely in the form of snow.
FAQs
How many layers should I wear in Idaho Falls during January?
In January, dressing in layers is essential in Idaho Falls to stay warm. With an average high of -1 °C (31 °F) and night temperatures plummeting to -11 °C (13 °F), you'll need thermal wear, a sweater, and a windproof winter coat.
What type of footwear is recommended for Idaho Falls in February?
Waterproof and insulated boots are recommended for Idaho Falls in February to navigate through snowy or wet conditions comfortably. Ensure they have good traction to prevent slips on ice.
Is a winter coat still necessary in Idaho Falls during March?
A winter coat is advisable for Idaho Falls in March, especially during the chilly nights with average lows of -4 °C (25 °F) and the potential for early spring snowfall.
What is the average rainfall in Idaho Falls during April?
Idaho Falls receives an average of 29 mm (1.15 in) of rainfall in April, with springtime showers common throughout the month.
Is May a good time to start gardening in Idaho Falls?
With a substantial increase in temperature and the last frosts passing, May is a great time to begin gardening in Idaho Falls.
Are there many sunny days in Idaho Falls in June?
June in Idaho Falls offers plenty of sunshine, with the fewest wet days in the year and about 11 hours of sun per day, making it ideal for outdoor activities.
How do I keep cool in Idaho Falls during July?
To keep cool in Idaho Falls during the hot July days, with 29 °C (85 °F), stay hydrated, seek shade during midday hours, and wear loose, light-colored clothing.
What activities are recommended in Idaho Falls during August?
Outdoor activities like hiking, fishing, and visiting parks are highly recommended in Idaho Falls during August, with long sunny days and minimal rain.
Is the weather in Idaho Falls still warm in September?
September in Idaho Falls still offers warm weather with average highs of 23 °C (74 °F) during the day, although it gets cooler as the month progresses.
Can I expect frost in Idaho Falls during October?
Frost can begin to occur in October in Idaho Falls, especially during the late nights and early mornings as temperatures hover around 0 °C (32 °F).
Does it begin to snow in Idaho Falls in November?
Snow can begin to appear in Idaho Falls in November as temperatures continue to fall, with an increasing number of wet days hinting at the onset of the snowy season.
Is December a good time for winter sports in Idaho Falls?
December is an ideal time for winter sports in Idaho Falls, as the cold temperatures and snowfall create perfect conditions for activities like skiing and snowboarding.
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