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Turner HouseMountain Home, #1 on this list · Photo: publichall · CC BY-SA 3.0
Idaho rankings · Climate

Towns with the hottest summers in Idaho

Mountain Home (tied with 1 more) has the hottest summers of Idaho’s 63 towns of 2,500+: July afternoons average a high of 94° (NOAA 1991–2020 normals). The typical town here averages 88°; 23 of the 63 average 90° or more.

The average July high. NOAA U.S. Climate Normals, 1991–2020, from NOAA’s 5 km grid at each town’s center; one town for each grid cell. A described list: no letters. How grades work

#T1

Mountain Home

Elmore County · 16,779 people
94°

July high·January low 24°·65 days of 90°+ a year

#T1

Mountain Home AFB

unincorporated, Elmore County · 3,219 people
94°

July high·January low 25°·65 days of 90°+ a year

#3

Weiser

Washington County · 6,249 people
94°

July high·January low 22°·59 days of 90°+ a year

All 63 towns

July high, highest first. Towns with the same figure share a rank (T = tied; 25 towns here).

63 towns ranked. Not here? See why a town may be missing.

#TownJuly highDays ≥90°January low
T1Mountain HomeElmore County · 16,779 people94°6524°average low
T1Mountain Home AFBunincorporated, Elmore County · 3,219 people94°6525°average low
3WeiserWashington County · 6,249 people94°5922°average low
T4HomedaleOwyhee County · 3,138 people94°6523°average low
T4PayettePayette County · 8,813 people94°5423°average low
6FruitlandPayette County · 7,213 people93°5423°average low
7Boise CityAda County · 238,429 people93°5524°average low
T8CaldwellCanyon County · 76,629 people93°5924°average low
T8EmmettGem County · 8,900 people93°5123°average low
T10Garden CityAda County · 13,047 people93°5524°average low
T10NampaCanyon County · 120,384 people93°5924°average low
T10StarAda County · 20,874 people93°5124°average low
13EagleAda County · 34,658 people93°5124°average low
T14MeridianAda County · 142,988 people92°5524°average low
T14MiddletonCanyon County · 12,600 people92°5924°average low
16KunaAda County · 31,525 people92°5524°average low
17WendellGooding County · 3,090 people92°5422°average low
T18GoodingGooding County · 3,855 people92°5421°average low
T18Hidden Springsunincorporated, Ada County · 3,378 people92°5523°average low
T18LewistonNez Perce County · 34,717 people92°4430°average low
21BuhlTwin Falls County · 4,801 people90°3222°average low
22Twin FallsTwin Falls County · 56,216 people90°4622°average low
23JeromeJerome County · 13,731 people90°5421°average low
24FilerTwin Falls County · 3,026 people90°3222°average low
25KimberlyTwin Falls County · 5,798 people90°2322°average low
26PrestonFranklin County · 6,177 people89°3414°average low
27OrofinoClearwater County · 3,259 people89°4727°average low
28Malad CityOneida County · 2,338 people89°4614°average low
29RupertMinidoka County · 6,460 people89°3320°average low
T30BurleyCassia County · 12,409 people88°3320°average low
T30HeyburnMinidoka County · 3,783 people88°3320°average low
32American FallsPower County · 4,785 people88°4216°average low
T33AberdeenBingham County · 1,852 people88°3015°average low
T33ChubbuckBannock County · 16,823 people88°4117°average low
T33Fort Hallunincorporated, Bannock County · 2,654 people88°2616°average low
36BlackfootBingham County · 13,361 people88°2616°average low
37SalmonLemhi County · 3,286 people87°2514°average low
38PocatelloBannock County · 58,771 people87°4119°average low
39ShelleyBingham County · 5,303 people86°2614°average low
40Idaho FallsBonneville County · 71,785 people86°2813°average low
41AmmonBonneville County · 20,119 people86°2813°average low
42Lincolnunincorporated, Bonneville County · 4,002 people86°2813°average low
43IonaBonneville County · 3,179 people86°2812°average low
44RigbyJefferson County · 5,757 people85°1312°average low
45Soda SpringsCaribou County · 3,165 people85°1511°average low
46BellevueBlaine County · 2,597 people85°2411°average low
47St. MariesBenewah County · 2,457 people84°2025°average low
T48HaileyBlaine County · 10,053 people84°2410°average low
T48MontpelierBear Lake County · 2,710 people84°168°average low
T48Rexburg College campusMadison County · 40,334 people84°1612°average low
T48St. AnthonyFremont County · 3,990 people84°1011°average low
52Bonners FerryBoundary County · 2,797 people84°2122°average low
53MoscowLatah County · 26,721 people84°2325°average low
54GrangevilleIdaho County · 3,621 people84°1424°average low
55Coeur d'AleneKootenai County · 58,179 people83°1826°average low
T56Post FallsKootenai County · 46,715 people83°1825°average low
T56SandpointBonner County · 10,645 people83°1423°average low
58RathdrumKootenai County · 13,227 people83°1825°average low
59HaydenKootenai County · 17,363 people83°1825°average low
60KetchumBlaine County · 3,643 people82°48°average low
61McCallValley County · 4,133 people81°914°average low
62VictorTeton County · 2,589 people80°29°average low
63DriggsTeton County · 2,403 people80°29°average low
Quick answers

Questions people ask

Which Idaho town has the hottest summers?

Mountain Home (Elmore County): July afternoons average a high of 94°. Mountain Home AFB (94°) and Weiser (94°) follow.

How are these towns ranked?

By the average July high (the warmest month’s afternoons), highest first, on NOAA’s 1991–2020 normals, read from its 5 km grid at each town’s center. Towns with the same figure share a rank (T); the figure and the state rank are the ones on each town’s Climate page. How grades work.

Why isn’t my town on this list?

The list covers towns of 2,500+ residents, one for each of NOAA’s 5 km grid cells (63 in Idaho): where towns share a cell, one of them stands for it, since the grid gives them the same figures. Every town’s own figures are on its Climate page. Every town is on the Idaho page.

Go deeper

More Idaho lists

Every list ranks the same 2,500+ towns, so a town’s rank means the same thing on each.

All Idaho rankings →
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