Idaho Falls Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Idaho Falls Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-13.731250000000001	-1.9		-5.19375	2.3
	-13.768749999999999	1.1		-4.5562499999999995	2.4
	-12.325	-1.6		-2.975	2.4
	-10.781250000000004	2.2		-2.0749999999999997	4.9
	-9.437500000000002	-0.3		-1.4124999999999999	2.2
	-10.056249999999999	-0.7		-1.73125	1.9
	-11.0625	-1.2		-2.01875	1
	-10.69375	-4.4		-1.89375	0.1
	-8.674999999999999	-5.5		-1.04375	-1.2
	-8.906249999999998	-3.9		-1.44375	0.3
	-9.962499999999997	-6.1		-2.5125	1.2
	-11.325000000000001	-9.2		-2.4	0.1
	-11.256249999999998	-8.1		-2.24375	-0.4
	-10.3875	-4.5		-2.4875	-2.1
Jan.	-11.1375	-4.1		-2.54375	-2.4
	-10.8875	-4.3		-2.1750000000000003	1.3
	-9.881249999999998	-7.6		-1.2937500000000002	0.9
	-8.76875	-7.8		-0.95625	2.7
	-8.456249999999999	-6.4		-0.6187500000000001	1
	-9.8125	-7.6		-1.46875	-1.4
	-9.743750000000002	-5.7		-1.20625	-2.5
	-10.543750000000001	-9.1		-1.8125	-0.3
	-9.41875	-8.2		-1.475	-0.1
	-9.39375	-13.1		-1.40625	-5.4
	-8.74375	-8.8		-0.7687499999999998	-1
	-9.225000000000001	-11.2		-1.0562500000000001	1.7
	-9.112499999999999	-7.7		-0.8624999999999998	3
	-9.706249999999999	-6.6		-1.36875	-0.7
	-9.681250000000002	-4		-0.6875	-0.5
	-11.075	-4		-0.6000000000000002	1.8
	-10.175	-5.8		-0.8187499999999999	3.2
	-9.14375	-5		-0.4562500000000001	3.8
	-9.062499999999998	-2.2		-0.38749999999999984	0.2
	-9.1875	-2		-0.39375	0.9
	-8.5875	-2.7		-0.018749999999999906	3.1
	-7.643750000000001	-5.4		1.1375000000000002	6.7
	-6.968750000000001	-3.9		0.6812499999999999	8.4
	-7.3062499999999995	-2		1.1562500000000002	9
	-7.874999999999999	-3.3		0.7812500000000002	8.9
	-8.218750000000002	-1.4		0.5812500000000003	4.7
	-8.85	-2.2		-0.09374999999999997	4.6
	-9.775	0.2		0.06875000000000009	3.9
	-8.9125	0.1		0.44999999999999984	2.1
	-8.149999999999999	-0.5		1.5750000000000006	1.7
	-6.61875	-0.6		2.3125	4.6
Feb.	-5.76875	0		2.225	10.9
	-5.862500000000001	-1.5		1.29375	8.9
	-7.5625	-2.9		1.1812500000000001	4.5
	-7.6312500000000005	-5.3		0.7999999999999998	1.2
	-8.362499999999999	-8.1		1.1437500000000003	-2.2
	-7.05	-15.2		0.5437500000000001	-0.9
	-8.2375	-9.5		0.3875000000000002	1.8
	-9.2875	-7.9		-0.36874999999999997	8.5
	-9.70625	-5.9		0.03749999999999999	5.3
	-8.368749999999999	1.3		0.6062500000000002	3.1
	-7.4375	-2.2		0.7125000000000001	5.3
	-7.3625	-1.6		1.4124999999999996	6.9
	-7.84375	-1.9		1.1750000000000003	7.8
	-7.68125	-3.3		2.7124999999999995	5.4
	-6.68125	-0.8		3.3125	9.4
	-6.06875	1.2		3.7874999999999996	10.8
	-5.8812500000000005	-1		3.5624999999999996	9.2
	-6.512499999999999	-1.9		3.462499999999999	9.4
	-5.9	-1.6		4.749999999999999	6.4
	-5.29375	-2.9		5.0875	4.8
	-5.231249999999999	-1.1		5.043749999999999	4.3
	-5.15625	1.9		4.906250000000001	8.7
	-5.3625	-0.4		4.6625	7.5
	-5.550000000000001	-0.9		5.90625	3.2
	-5.393750000000001	-4.2		6.749999999999999	4.6
	-4.19375	1.5		8.162499999999998	12
	-2.8875	2.8		7.881250000000001	11.1
	-1.9749999999999999	-1.2		8.7375	8.7
Mar.	-1.7	-4.9		8.34375	0.8
	-1.8562500000000002	-1.1		8.6625	11.7
	-2.4937500000000004	2		7.949999999999999	16.4
	-2.89375	2.7		8.26875	23.1
	-2.8187499999999996	1.7		8.287500000000001	23.9
	-2.6250000000000004	3.9		8.21875	24.4
	-2.5	2.8		8.675	20.1
	-1.13125	2.4		7.812499999999999	14.3
	-1.6437500000000003	3.6		8.756250000000001	17.4
	-1.7999999999999996	4.6		8.625	19.2
	-1.9562499999999996	6.2		8.4	19
	-2.0625	2		9.1375	11.3
	-1.7937499999999997	-1.9		9.73125	14.8
	-1.24375	1.4		10.237500000000002	19.1
	-0.54375	5.3		9.60625	20.2
	-0.78125	3		9.075000000000003	12.9
	0.10000000000000003	1.8		10.306249999999999	12.5
	-0.6625000000000001	5.7		10.043750000000001	13.9
	-1.4375	-0.4		9.4875	7
	-2.75	-1.1		8.9625	12.2
	-1.41875	-1.7		11.05625	16.6
	-0.043749999999999956	-1.4		10.893749999999999	21
	-0.4125	-1.5		10.4625	22.7
	-0.8437500000000001	1.7		10.85625	23.1
	0.14375000000000004	2.8		11.81875	22
	-0.6749999999999998	3.4		11.58125	22.7
	-1.0875000000000004	2.4		13.85625	24.4
	1.51875	5.7		13.9875	14.4
	1.2062499999999998	-0.1		13.218749999999998	16.9
	-0.5687500000000001	0.2		10.868749999999999	12.6
	-0.91875	0.2		10.199999999999998	14.1
Apr.	-0.7312500000000001	1.5		11.69375	11.7
	0.24999999999999994	-1.6		12.493749999999999	4.7
	0.6375000000000001	-5.8		12.368749999999999	8.6
	0.43750000000000006	-4.2		13.2875	15.6
	0.36249999999999993	-4.2		12.95	22.7
	1.1812499999999997	-0.7		14.13125	26.6
	1.5187500000000003	3		14.88125	27.1
	1.3750000000000004	3.4		14.9625	10.1
	2.1125	2.5		14.968749999999998	12.6
	2.24375	-1.6		14.81875	8
	2.23125	-2.5		14.987500000000002	10.2
	2.8625000000000003	1.2		15.15	12.4
	2.5999999999999996	-2.4		15.806250000000002	13
	2.00625	-0.9		13.71875	14.7
	1.1125	-2.4		14.250000000000002	16.3
	2.075	-0.7		14.999999999999996	18.4
	2.325	-2.3		15.33125	19.1
	2.2312499999999997	-1.1		16.568749999999998	24.6
	2.61875	1.1		17.1875	25.7
	4.4	7.8		17.437500000000004	22.6
	3.7124999999999995	6.7		18.75	16.7
	4.768750000000001	-1.4		18.249999999999996	20.7
	4.8687499999999995	9.2		16.3	26.8
	2.525	3.7		16.343749999999996	27
	3.05625	4.3		16.56875	24.5
	3.0625	2.3		17.675	28
	3.68125	4.7		17.918749999999996	30
	4.331250000000001	6.2		19.625	30.5
	4.575	8.3		19.006249999999998	32.5
	5.2875000000000005	4.5		20.08125	23.4
May	5.93125	5.1		20.437499999999996	22.9
	6.4312499999999995	4.7		19.837500000000002	19.3
	5.2375	0.8		19.181250000000002	11.6
	5.968749999999999	2		18.943749999999998	15.9
	5.525	-1.8		17.7375	18
	5.34375	2.1		18.1	17.9
	4.16875	5.8		18.8	16.3
	4.906250000000001	-0.1		18.70625	22.5
	5.04375	3.6		17.225	26.9
	5.087499999999999	9.9		17.03125	28.1
	4.26875	9.4		19.4375	29.6
	6.2375	9.4		19.712500000000002	19.5
	6.2875	8.4		19.431250000000002	27.5
	6.7875	10.5		19.4	28.9
	6.4875	8.3		19.931250000000002	24.2
	6.35625	8.8		21.762500000000003	13.8
	7.4937499999999995	8.2		23.11875	19.6
	7.762499999999999	4		22.474999999999998	22.7
	7.924999999999999	3.9		23.118749999999995	26.6
	9.03125	6.7		23.9375	27.8
	9.30625	9.5		24.79375	27.6
	9.918750000000001	9.3		25.112500000000004	27.9
	9.55	11.6		25.86875	26.5
	9.131250000000003	9.8		24.4625	21.3
	9.69375	5.5		23.78125	24.7
	9.406249999999998	10.2		24.725000000000005	21.3
	9.387500000000001	4		23.56875	20.8
	8.74375	0.8		23.625000000000007	23.1
	9.112499999999999	3.5		23.91875	26.9
	9.31875	7.8		24.243749999999995	25.6
	9.44375	8.9		24.01875	26.1
Jun.	9.63125	5.9		24.4	27.9
	9.3125	10.4		24.0625	33
	9.118749999999999	11.7		23.606250000000003	29.7
	8.45	7.1		23.831249999999997	27.8
	8.825	8		24.4875	31.2
	8.325	15.2		23.262499999999996	29
	8.3125	10.7		24.881249999999998	27.7
	9.56875	11		25.66875	30.6
	9.73125	10		26.849999999999998	30.3
	10.75625	11.1		27.881249999999998	32.2
	11.706250000000002	12.2		28.343749999999996	28.8
	11.949999999999998	13.6		28.19375	29.3
	12.362499999999999	8.8		28.743750000000002	20.1
	12.518749999999997	5.6		30.01875	18.1
	11.7	7		29.0125	19.8
	11.78125	5.8		29.150000000000006	27.1
	12.275	6.7		30.331250000000004	29
	12.5375	8.8		30.53125	29.4
	13.506249999999998	9.6		29.818749999999998	30.7
	13.175	10.5		30.368750000000002	32.7
	13.9	13.8		30.231250000000003	36.7
	13.275	14.3		30.33125	33.7
	13.15	15.9		30.925	33.3
	13.775	12.7		31.15	33.8
	13.51875	11		31.806249999999995	32.6
	14.368749999999997	12.5		32.00000000000001	34.7
	14.350000000000001	11.8		31.131249999999998	36.3
	14.231250000000001	11.4		31.725	39.8
	14.5375	14.5		32.15625000000001	36.3
	14.54375	14.1		31.718749999999996	35.2
Jul.	14.699999999999998	17		31.01875	32.7
	14.08125	14.6		31.712500000000002	35.2
	14.2625	19.6		31.712500000000006	33.4
	15.568749999999998	15.1		32.66875	34.8
	14.65625	14.2		32.5125	35
	14.737500000000002	14		32.162499999999994	36.1
	15.037500000000001	17.8		32.38125	37.1
	15.387499999999998	19.1		32.831250000000004	32.1
	15.700000000000001	16.4		32.6875	32.9
	15.20625	16.6		32.56875000000001	37.5
	14.687499999999998	16.9		32.1625	37
	14.4875	16.8		32.1875	36.1
	14.6375	19.6		31.487499999999997	34.4
	14.106250000000001	12.8		31.63125	35.4
	14.4875	14.5		31.5	34.3
	14.293750000000001	13.2		32.474999999999994	32.9
	14.125	13.7		32.61875	36
	15.168750000000001	12.3		32.73125	37.7
	14.83125	14.4		31.375	32.8
	14.68125	12.1		31.406249999999993	27.6
	14.90625	7.1		31.1125	28.4
	14.193750000000001	7.6		30.3625	30.2
	12.96875	8		29.981249999999996	34.4
	13.95625	12.3		29.925	36.3
	13.4875	13.1		29.231250000000003	36.3
	12.162500000000001	15.1		29.493750000000002	34.9
	12.775	16.2		31.14375	36.4
	13.4125	14.6		30.806249999999995	35.3
	13.949999999999998	19.2		30.281250000000004	32.7
	14.275000000000002	13.5		31.281250000000004	26.1
	14.275	11.9		30.481249999999996	26
Aug.	13.4375	13.5		30.968750000000004	29.5
	13.274999999999999	8.3		31.55	14.9
	13.431250000000002		8.2	31.518749999999997		8.5
	13.65		7.5	31.01875		8.2
	13.94375		7.1	30.131249999999994		8.1
	13.9375		7.8	29.36875		8.4
	13.899999999999999		8.5	29.96875		9.9
	13.18125		8.6	28.612499999999997		10.8
	11.93125		7.4	28.73125		9.2
	12.687499999999998		12.4	29.83125		29
	12.849999999999998		12	29.76875		29.1
	12.699999999999998		12.5	28.093749999999996		28.6
	12.587499999999999		13	27.743750000000002		28.4
	12.41875		12.5	28.462500000000002		28.7
	11.80625		11.8	29.46875		29.5
	12.643749999999999		12.7	28.6125		28.6
	11.981249999999998		12	28.087500000000006		27.4
	11.875		11.7	28.081249999999997		28.4
	11.91875		12.1	28.162500000000005		28.3
	12.143749999999999		11.9	28.393749999999997		28.1
	11.499999999999998		11.4	27.75625		27.7
	11.024999999999999		10.8	27.1		27.7
	10.3375		10.8	27.15		27.2
	10.718750000000002		10.6	28.2375		27.6
	11.00625		10.7	26.843750000000004		26.1
	10.231250000000003		9.8	25.26875		25.5
	9.74375		10	25.356250000000003		25.7
	9.4		9.7	25.037500000000005		25.2
	9.268749999999999		8.7	25.6625		24.5
	9.8375		9.2	24.106249999999996		25.2
	9.249999999999998		9.9	24.8875		25.4
Sep.	9.0375		9.4	24.25		24.6
	9.2125		9.5	24.10625		24.2
	8.756250000000001			24.099999999999998
	8.74375			23.743750000000002
	8.637500000000001			22.43125
	7.925000000000001			21.612499999999997
	7.262500000000001			21.75
	7.456250000000001			21.699999999999996
	7.225			22.193749999999998
	7.5			22.693749999999998
	7.281250000000001			22.812500000000007
	8.20625			23.137500000000003
	7.84375			22.55625
	7.21875			20.91875
	6.7749999999999995			21.587500000000002
	7.275			20.949999999999996
	6.043749999999999			19.75625
	5.8374999999999995			19.68125
	6.1625000000000005			19.406250000000004
	5.28125			16.631249999999998
	4.012499999999999			16.9875
	4.43125			16.68125
	3.7			17.975
	3.58125			17.71875
	2.86875			18.175
	4.1125			17.53125
	4.231249999999999			15.668750000000001
	2.41875			14
	1.5375			15.231250000000001
	2.7			15.681249999999999
Oct.	2.6562500000000004			16.256249999999998
	2.56875			16.412499999999998
	2.96875			17.1875
	2.74375			15.1375
	2.1625			15.175
	1.9875			14.887500000000001
	2.55			15.06875
	2.13125			15.656249999999998
	2.6187500000000004			12.70625
	1.4437499999999999			12.974999999999996
	1.2374999999999998			12.112499999999999
	-0.0749999999999999			8.98125
	-1.2625			9.16875
	-1.8499999999999999			10.50625
	-1.1124999999999998			9.568750000000001
	-1.2437500000000001			9.743749999999999
	-0.5625000000000003			12.01875
	0.6874999999999998			11.71875
	0.25			10.5
	-0.3999999999999998			9.60625
	-0.8562500000000001			9.718750000000002
	-0.80625			8.924999999999999
	-0.5687500000000001			9.206249999999999
	-0.8937499999999999			8.85
	-2.1937499999999996			8.24375
	-2.91875			8.1625
	-3.24375			6.5875
	-4.7375			5.243750000000001
	-4.668749999999999			6.25
	-3.31875			6.331249999999999
	-2.6562499999999996			7.1499999999999995
Nov.	-2.9875000000000003			7.15625
	-3.41875			5.325
	-4.4625			4.5
	-5.1			5.20625
	-4.00625			4.5375
	-5.53125			3.7125
	-5.2749999999999995			4.0375
	-4.03125			4.4937499999999995
	-4.65625			4.5562499999999995
	-5.437499999999999			2.86875
	-6.16875			2.0500000000000003
	-6.018749999999999			2.83125
	-5.9625			2.8812499999999996
	-5.693749999999999			2.3187499999999996
	-6.58125			1.7687500000000003
	-6.775			0.4937499999999999
	-6.30625			0.8999999999999999
	-6.5125			1.7750000000000001
	-6.6812499999999995			1
	-7.218749999999999			1.11875
	-6.824999999999999			0.4875
	-7.518750000000001			0.70625
	-6.706250000000001			0.58125
	-6.78125			-0.037500000000000144
	-7.3375			-0.28750000000000003
	-7.087500000000001			0.6124999999999999
	-5.5875			1.0375
	-5.56875			1.6937499999999999
	-6.2375			0.8812500000000001
	-7.61875			0.16874999999999996
Dec.	-7.675000000000002			-1.0312499999999996
	-8.893749999999999			-0.9437500000000002
	-10.393749999999999			-1.5437500000000002
	-8.818749999999998			-1.0562500000000004
	-8.4625			-0.8624999999999999
	-7.800000000000002			-0.9249999999999998
	-7.31875			0.37500000000000006
	-8.325			0
	-8.631250000000001			-1.0187499999999998
	-8.28125			-0.6437499999999999
	-8.268749999999999			-1.1750000000000003
	-10.493749999999999			-2.8499999999999996
	-10.725			-2.931250000000001
	-9.86875			-2.6437499999999994
	-9.875			-2.0937500000000004
	-10.775000000000002			-2.4875
	-13.246666666666666			-4.793333333333334

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

40°C

Highest Temp

12 Jul. 26

-15°C

Lowest Temp

20 Feb. 26

Seasonal Breakdown

Hottest MonthJuly34.42°C

Coldest MonthJanuary-5.36°C

Wettest MonthJanuary1.63mm

Windiest MonthMarch30.36km/h

Idaho Falls Climate Change InsightsSee how climate patterns are evolving over time. Temperature shifts, rainfall trends, and extreme events—all in one place.

Weather City Ranking GloballyExplore Real time of the world’s hottest & Coldest Cities based on current temperature data.

Frequently Asked Questions

1. What is the hottest month in Idaho Falls historically?

July is historically Idaho Falls's hottest month, with average maximum temperatures around 32°C. During peak heatwave events, the highest recorded temperatures have reached 40°C on 2026-07-12.

2. What is the coldest month in Idaho Falls historically?

January is Idaho Falls's coldest month, with average minimum temperatures around -10°C. The all-time record low of -31°C was recorded on 2023-01-30.

3. What is the average annual rainfall in Idaho Falls over the past 17 years?

Idaho Falls's average annual rainfall is approximately 330.1mm, based on records spanning 17 years.

4. How many rainy days does Idaho Falls experience on average per year?

Idaho Falls historically records approximately 131.05 rainy days per year. May has the highest number of rain days at an average of 16.2 days.

5. What is the all-time highest temperature ever recorded in Idaho Falls?

The all-time highest temperature recorded in Idaho Falls is 40°C on 2026-07-12.

6. What is the all-time lowest temperature ever recorded in Idaho Falls?

The all-time lowest temperature recorded in Idaho Falls is -31°C on 2023-01-30.

7. What is the windiest time of year in Idaho Falls historically?

Idaho Falls experiences its strongest winds during June. The historic gust record of 63.7 kph was recorded on 2025-07-04.

8. What is the highest and lowest humidity in Idaho Falls during a year?

Usually, Idaho Falls's humidity peaks in January at around 89.2% and drops to its lowest in July at approximately 35.4%.

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Idaho Falls Historic Weather Records
Analyse hottest, coldest, windiest & wettest days