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Forecast confidence: High · models disagree by 2°F

Idaho Falls weather

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Light drizzle,much the same tomorrow

NWS, the American and the European model agree on a high near 51° in Idaho Falls today. Tomorrow: mostly clear, around 56°, with a 0% chance of rain.

51°34°
56°31°
59°37°
48°36°
53°34°
57°37°
Todaymodels agreeTomorrowmodels agreeMondaymodels agreeTuesdaymodels agreeWednesdaymodels agreeThursdaysplit ±5°
NWSNational Blend (NBM)
34°
Mainly clear
Feels 28° · Wind 5 mph · Humidity 100%
AmericanNOAA GFS
32°
Clear
Feels 26° · Wind 4 mph · Humidity 88%
EuropeanECMWF
33°
Clear
Feels 27° · Wind 3 mph · Humidity 89%

Latest for Idaho Falls: NWS (National Blend (NBM)): 34° Mainly clear · American (NOAA GFS): 32° Clear · European (ECMWF): 33° Clear.

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Idaho Falls weather alerts and warnings

active National Weather Service watches, warnings and advisories

Checking the National Weather Service for active alerts covering Idaho Falls…

Idaho Falls weather in numbers

measured normals and 10 years of recorded weather

Idaho Falls swings 77°F across the year, from 90°F highs in July to 13°F lows in January, and May is usually the wettest month in a year that brings about 13 in of precipitation. Over 10 years of recorded weather it averages 100 days a year at 77°F or above, 58 of them at 86°F or above, 159 frost nights, and rain on 84 days.

Warmest month
July
90°F average high
Coldest month
January
13°F average low
Wettest month
May
13 in a year
Comfortable
1 month
September
Residents
59,000
share this forecast
Most accurate here
European
98/100 CheckWeather Score
Warm days
100 days
a year at 77°F or above
Frost nights
159 nights
a year below 32°F
Rain days
84 days
a year with 0.04 in or more

Day counts are from the ERA5 reanalysis for Idaho Falls’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.

The weather map: all three models at once

NWS, American, European side by side around Idaho Falls and nearby towns.Live rain radar →
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Idaho Falls hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Idaho Falls 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Light drizzle
51° 34°
models agree
Tomorrow
Mostly clear
56° 31°
models agree
Mon
Mostly clear
59° 37°
models agree
Tue
Light drizzle
48° 36°
models agree
Wed
Mostly clear
53° 34°
models agree
Thu
Partly cloudy
57° 37°
±5°
Fri
Partly cloudy
54° 40°
models agree
Sat
Light snow
49° 35°
±6°
Sun
Light snow
47° 31°
±5°
Mon
Clear
50° 31°
models agree
Tue
Clear
51° 30°
±6°
Wed
Clear
48° 32°
±18°
Thu
Cloudy
51° 33°
±18°

Idaho Falls, Idaho (ID) is at its warmest in Jul (average highs near 90°F) and coldest in Jan (lows around 13°F), with roughly 13 in of precipitation across the year. Below, compare what NWS, American, European forecast for Idaho Falls right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Idaho Falls climate by month

average daytime high and overnight low across a typical year (1991-2020)
Jan
28°
13°
Feb
34°
16°
Mar
46°
26°
Apr
57°
32°
May
69°
42°
Jun
79°
51°
Jul
90°
58°
Aug
86°
57°
Sep
74°
45°
Oct
59°
34°
Nov
41°
24°
Dec
30°
16°

Source: 1991-2020 averages, ERA5 for this place adjusted with NASA POWER.

How Idaho Falls' weather has changed since 1995

30 years of daily data, 1995-2024, shown as change
+0.1°F

Around Idaho Falls, the difference between 1995-2004 and 2015-2024 is +0.1°F, within the normal swing from year to year.

1995: −0.4°F vs the 30-year average1996: −1.3°F vs the 30-year average1997: −1.9°F vs the 30-year average1998: +0.1°F vs the 30-year average1999: +0.1°F vs the 30-year average2000: +1.0°F vs the 30-year average2001: +1.6°F vs the 30-year average2002: −0.4°F vs the 30-year average2003: +2.6°F vs the 30-year average2004: +0.3°F vs the 30-year average2005: −0.1°F vs the 30-year average2006: −0.2°F vs the 30-year average2007: +1.2°F vs the 30-year average2008: −1.7°F vs the 30-year average2009: −1.5°F vs the 30-year average2010: −1.5°F vs the 30-year average2011: −2.2°F vs the 30-year average2012: +1.9°F vs the 30-year average2013: −0.4°F vs the 30-year average2014: +0.3°F vs the 30-year average2015: +1.9°F vs the 30-year average2016: +0.7°F vs the 30-year average2017: −0.4°F vs the 30-year average2018: −0.2°F vs the 30-year average2019: −1.5°F vs the 30-year average2020: −0.1°F vs the 30-year average2021: +1.7°F vs the 30-year average2022: −0.6°F vs the 30-year average2023: −0.8°F vs the 30-year average2024: +1.9°F vs the 30-year average
1995each stripe is one year2024
cooler than averagearound averagewarmer than average

Days above 86°F

no clear change

2015-2024 against 1995-2004. Within the normal year-to-year swing

1995: −16 vs the 30-year average1996: −8 vs the 30-year average1997: −21 vs the 30-year average1998: −4 vs the 30-year average1999: −11 vs the 30-year average2000: +12 vs the 30-year average2001: +21 vs the 30-year average2002: +6 vs the 30-year average2003: +23 vs the 30-year average2004: −11 vs the 30-year average2005: −4 vs the 30-year average2006: +6 vs the 30-year average2007: +19 vs the 30-year average2008: +1 vs the 30-year average2009: −11 vs the 30-year average2010: −9 vs the 30-year average2011: −14 vs the 30-year average2012: +18 vs the 30-year average2013: +18 vs the 30-year average2014: −11 vs the 30-year average2015: −12 vs the 30-year average2016: +1 vs the 30-year average2017: −9 vs the 30-year average2018: −9 vs the 30-year average2019: −2 vs the 30-year average2020: −8 vs the 30-year average2021: +18 vs the 30-year average2022: +20 vs the 30-year average2023: −12 vs the 30-year average2024: +6 vs the 30-year average

Frost nights

5 fewer nights a year

2015-2024 against 1995-2004, below 32°F. Within the normal year-to-year swing

1995: +7 vs the 30-year average1996: +10 vs the 30-year average1997: +5 vs the 30-year average1998: +2 vs the 30-year average1999: +1 vs the 30-year average2000: −2 vs the 30-year average2001: −2 vs the 30-year average2002: +11 vs the 30-year average2003: −2 vs the 30-year average2004: −19 vs the 30-year average2005: −1 vs the 30-year average2006: −2 vs the 30-year average2007: −6 vs the 30-year average2008: +13 vs the 30-year average2009: +15 vs the 30-year average2010: +5 vs the 30-year average2011: +17 vs the 30-year average2012: −16 vs the 30-year average2013: +4 vs the 30-year average2014: −0 vs the 30-year average2015: −25 vs the 30-year average2016: −19 vs the 30-year average2017: −1 vs the 30-year average2018: −4 vs the 30-year average2019: +9 vs the 30-year average2020: +1 vs the 30-year average2021: −3 vs the 30-year average2022: +8 vs the 30-year average2023: −5 vs the 30-year average2024: +3 vs the 30-year average

Average wind

−2%

2015-2024 against 1995-2004. Within the normal year-to-year swing

1995: +3% vs the 30-year average1996: +8% vs the 30-year average1997: −5% vs the 30-year average1998: −5% vs the 30-year average1999: +3% vs the 30-year average2000: +3% vs the 30-year average2001: +1% vs the 30-year average2002: +1% vs the 30-year average2003: +3% vs the 30-year average2004: −5% vs the 30-year average2005: −2% vs the 30-year average2006: +1% vs the 30-year average2007: +1% vs the 30-year average2008: +1% vs the 30-year average2009: −7% vs the 30-year average2010: −2% vs the 30-year average2011: +3% vs the 30-year average2012: +6% vs the 30-year average2013: −2% vs the 30-year average2014: +3% vs the 30-year average2015: −7% vs the 30-year average2016: +3% vs the 30-year average2017: −2% vs the 30-year average2018: +1% vs the 30-year average2019: −2% vs the 30-year average2020: +6% vs the 30-year average2021: +1% vs the 30-year average2022: −2% vs the 30-year average2023: −7% vs the 30-year average2024: +1% vs the 30-year average

Bars: each year against the area's 30-year average. Dashed lines: the average of the first and the last ten years.

See the numbers year by year
YearTemp vs averageDays >86°F vs avgFrost nights vs avgWind vs avg
1995−0.4°F−16+7+3%
1996−1.3°F−8+10+8%
1997−1.9°F−21+5−5%
1998+0.1°F−4+2−5%
1999+0.1°F−11+1+3%
2000+1.0°F+12−2+3%
2001+1.6°F+21−2+1%
2002−0.4°F+6+11+1%
2003+2.6°F+23−2+3%
2004+0.3°F−11−19−5%
2005−0.1°F−4−1−2%
2006−0.2°F+6−2+1%
2007+1.2°F+19−6+1%
2008−1.7°F+1+13+1%
2009−1.5°F−11+15−7%
2010−1.5°F−9+5−2%
2011−2.2°F−14+17+3%
2012+1.9°F+18−16+6%
2013−0.4°F+18+4−2%
2014+0.3°F−11−0+3%
2015+1.9°F−12−25−7%
2016+0.7°F+1−19+3%
2017−0.4°F−9−1−2%
2018−0.2°F−9−4+1%
2019−1.5°F−2+9−2%
2020−0.1°F−8+1+6%
2021+1.7°F+18−3+1%
2022−0.6°F+20+8−2%
2023−0.8°F−12−5−7%
2024+1.9°F+6+3+1%

Source: NASA POWER daily data from the MERRA-2 reanalysis, 1995-2024. Each value describes a grid square of about 50 km around Idaho Falls, not a weather station, and a square that takes in sea or a large lake runs milder than the city itself. That is why this section shows change against the square's own 30-year average rather than counts you could compare with a local station. Rain and snow are left out because their long-term record in this dataset is not consistent over time. "Within the normal year-to-year swing" means the change is smaller than the usual differences between single years.

Which forecast is most accurate in Idaho Falls?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
98
/100rank #1
97±0.3°F97±0.8 mph100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
83
/100rank #2
83±1.7°F91±2.7 mph7687% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±2°50° to 53°±76%22% to 98% chance
Tomorrow±3°54° to 57°models agree0% to 0% chance
Mon±4°57° to 60°±15%11% to 26% chance
Tue±3°46° to 50°±2%35% to 37% chance
Wed±2°52° to 54°±3%3% to 6% chance

The models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Idaho Falls

today, local time
Sunrise
07:53
Sunset
18:30
Daylight
10h 37m

Common questions

What's the weather in Idaho Falls today?
Saturday, October 24: NWS, the American and the European model agree on a high near 51° in Idaho Falls today. Tomorrow: mostly clear, around 56°, with a 0% chance of rain. The forecast on this page refreshes live.
Will it rain in Idaho Falls today or tomorrow?
Rain looks unlikely in Idaho Falls on Sunday, October 25: no model gives more than 0% (NWS 0%, American 0%, European 0%). On Saturday, October 24 the highest chance of rain from any model is 98%. The hourly strip and the model-by-model rain panel above update live.
Which forecast is most accurate for Idaho Falls?
Over the last 30 days, the European model has been the most accurate for Idaho Falls (CheckWeather Score 98/100), ahead of the American at 83. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Idaho Falls?
July is typically the warmest month in Idaho Falls, with average highs around 90°F.
How cold does Idaho Falls get?
The coldest month in Idaho Falls is January, when overnight lows average about 13°F.
How much rain does Idaho Falls get?
Idaho Falls sees roughly 13 in of precipitation a year, with May usually the wettest month.
Is Idaho Falls getting warmer?
Not clearly. In NASA's reanalysis for the area around Idaho Falls, the difference between 1995-2004 and 2015-2024 is 0.1°F, within the normal swing from year to year.

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More US weather

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