Casper Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Casper Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-14.331249999999999	0		-4.29375	4
	-13.59375	-0.7		-3.4187499999999993	6.6
	-12.837499999999999	-1.9		-2.69375	6.1
	-12.081249999999997	0.1		-2.7624999999999997	5.2
	-12.74375	0.7		-2.2687500000000003	7.9
	-13.375	-1.4		-1.6250000000000002	4.8
	-11.0625	-3.6		-1.8437499999999996	2.6
	-11.762499999999998	-4.4		-1.225	-0.1
	-10.40625	-7.7		-1.05625	-2
	-10.15625	-9		-0.66875	2.8
	-12.275	-4.8		-2.2625000000000006	6.8
	-12.143749999999999	-4.1		-2.9124999999999996	5.9
	-11.075000000000001	-3		-1.4937500000000001	6.3
	-11.325	-1.8		-1.8125000000000002	6.6
Jan.	-12.487499999999999	-4.5		-2.2874999999999996	6.8
	-11.34375	-8.4		-0.5062500000000003	-4
	-9.9	-11.4		0.3375000000000001	-2.5
	-9.6	-6.5		0.19999999999999996	-0.2
	-9.11875	-9.6		-1.0437500000000002	2.7
	-9.862499999999999	-7.5		-0.90625	2.1
	-9.1875	-10.3		-0.30625	-1.8
	-10.29375	-11.9		-1.3749999999999998	-6.5
	-10.018749999999997	-15.6		-1.05	-10.8
	-9.162500000000001	-19.3		-1.0375	-7.4
	-9.7375	-17.2		-1.1437499999999998	-11.8
	-10.487499999999999	-18.2		-0.9312500000000001	-1.1
	-9.668750000000001	-9.9		-0.40625	2.4
	-10.79375	-8.6		-0.15	2.7
	-9.6125	-7.5		0.14375000000000004	2.4
	-9.881250000000001	-6.1		0.9375000000000001	2.9
	-11.55625	-3.5		-0.4125000000000002	6.9
	-10.7875	-3.7		-2.2062500000000003	7.5
	-11.068749999999998	-3.5		-0.20624999999999993	6
	-11.475000000000001	-3.9		0.45625000000000004	4.3
	-11.43125	-3.4		-0.61875	8.7
	-9.66875	-1.8		0.7562499999999999	12.9
	-10.087500000000002	-3		0.07500000000000007	14.3
	-11.0875	0.4		0.5625	12.3
	-12.025	-1.3		-0.2625000000000002	11.5
	-12.46875	0.5		-1.7000000000000004	9.9
	-11.481250000000001	-4		-1.0875	5
	-12.2625	-2.3		-1.88125	8.4
	-11.806250000000002	-1.3		-1.20625	8.7
	-9.256249999999998	-2.2		1.8312499999999994	8.5
	-9.131249999999998	-2.6		0.9749999999999999	8.4
Feb.	-10.875	-1.1		0.2625	10.6
	-10.6375	-0.6		0.8562499999999998	11.3
	-10.393749999999999	-1.5		-0.13749999999999984	7.4
	-11.306249999999999	-2		-0.0687500000000002	6
	-11.487499999999999	-10		-0.41875000000000007	-2.5
	-10.281250000000002	-15.1		-0.24999999999999983	-2.5
	-11.59375	-11.3		-0.4624999999999997	3.5
	-11.88125	-10.6		-2.7062500000000007	8.2
	-13.9125	-3.3		-2.8125	8.7
	-13.6	0.2		-1.2750000000000001	8.7
	-12.14375	-0.9		-1.2062500000000003	9.5
	-11.506249999999998	-2.5		0.19374999999999992	9.9
	-11.018749999999999	-2.4		1.35	10
	-9.806250000000002	-2		0.9187500000000002	10.4
	-9.23125	-0.8		2.0749999999999997	12.7
	-8.3625	2		3.05625	10.9
	-6.437499999999999	-0.4		3.64375	9.3
	-8.231250000000001	-2.4		2.5	11.6
	-8.28125	-0.3		3.2874999999999996	9.3
	-6.8875	-1.3		4.187499999999999	3.1
	-7.087500000000001	-4.1		4.031249999999999	9.6
	-5.9	-1.5		4.9125000000000005	11.1
	-6.593749999999999	-0.3		3.75	15.7
	-7.24375	-3		4.575	9.2
	-6.64375	-6.3		5.41875	5.4
	-5.418750000000001	-0.4		6.5625	12
	-3.81875	0.6		7.85625	12.1
	-2.5312500000000004	1.3		7.6125	13.4
Mar.	-2.4124999999999996	-11.3		8.024999999999999	-1.9
	-2.7437499999999995	-8.7		7.2749999999999995	8.2
	-3.23125	1		6.7875000000000005	16.6
	-4.1812499999999995	1.1		6.5249999999999995	20.4
	-4.518749999999999	2.6		6.843750000000001	22.5
	-4.30625	4.2		7.9625	23.5
	-3.962500000000001	5.8		7.643750000000001	26.7
	-2.8125000000000004	6.4		7.887500000000001	16.1
	-3.0562499999999995	2.4		7.425	18.8
	-3.937500000000001	2.9		8.15	21.3
	-4.2375	7.6		7.543749999999999	25.8
	-3.19375	1.6		8.29375	10.8
	-2.6375000000000006	-1.5		9.668750000000001	10.6
	-1.9562499999999998	0.4		9.76875	22.9
	-1.46875	5		10.28125	22.9
	-1.5750000000000002	4.2		9.15625	21.2
	-2.03125	0.2		8.893749999999999	10.8
	-1.6374999999999997	3.4		9.00625	13.5
	-2.2562499999999996	2.2		8.9	13.3
	-4.31875	-2.4		6.499999999999999	2
	-3.9937499999999995	-3.4		8.73125	11
	-2.35	-4.1		11.481250000000001	17.3
	-1.4625000000000001	-1.2		10.200000000000001	16.2
	-1.65625	-1.5		11.612500000000002	21.3
	-0.3062500000000001	-0.2		12.006250000000001	16.1
	-1.2374999999999998	1.5		9.537500000000001	17.5
	-3.11875	-1.1		10.8625	20.6
	-0.9687500000000001	4.9		13.000000000000004	23.2
	-0.8937499999999998	2.8		12.956249999999999	20.2
	-3.08125	3.5		9.08125	16.9
	-3.5875000000000004	1.8		9.131249999999998	16.1
Apr.	-2.7249999999999996	0.4		9.58125	19.1
	-1.6687499999999997	0.5		10.706249999999999	20.3
	-1.8625	-4.6		9.581250000000002	4.6
	-2.175	-9.2		9.825000000000003	9.9
	-2.55	-0.1		10.59375	18.1
	-1.5562499999999997	6.3		11.00625	23.2
	-1.05625	9.3		12.118749999999999	24.9
	-0.28750000000000003	8.2		13.556249999999999	20.2
	-0.6624999999999999	1.8		13.05625	12.2
	0.3562500000000001	-2.5		13.106250000000003	1.6
	0.8125	-5.9		13.493749999999999	7.3
	1.0500000000000003	-0.4		15.09375	9
	2.2874999999999996	-3.7		14.250000000000002	6.8
	1.35	1.1		12.906249999999998	10.5
	0.15000000000000008	0.1		12.087499999999999	10.8
	0	2		11.356249999999998	11.3
	0.69375	-0.1		13.10625	14.6
	1.5062499999999999	3.7		13.85625	20.6
	1.4937500000000001	4.8		15.943750000000003	20.1
	2.875	5		16.131249999999998	13
	2.8125	1.7		17.75625	4.6
	4.018750000000001	-4.6		17.525000000000002	10.7
	3.90625	3.7		16.8375	19.3
	2.85625	4.4		14.593750000000002	19.6
	2.6062499999999997	7.2		14.837499999999999	14.8
	2.4624999999999995	3.2		14.750000000000002	21.1
	2.51875	9.2		13.2125	27.2
	2.3375000000000004	7.3		14.975000000000001	22.2
	3.7125	9.1		18.287499999999998	30.7
	4.78125	10.4		17.31875	22.5
May	5.018750000000001	7.4		18.46875	22.9
	5.775000000000001	4.7		19.65625	23.7
	6.168749999999999	3.9		19.25	13.1
	5.64375	-4		18.225	1.4
	4.25	-7.3		14.737499999999999	5.5
	4.3187500000000005	-2.8		16.55	14.7
	4.1	2.6		16.25625	14.4
	4.575000000000001	-0.1		17.29375	13.6
	5.40625	4.6		18.95625	21
	6.443750000000001	8.5		17.7875	25.3
	5.725	10.6		18.837500000000002	26.2
	6.256250000000001	11.8		20.8625	24.3
	7.5875	11.2		21.13125	23.9
	7.68125	11.9		20.525000000000002	26.8
	7.15625	10.8		19.1125	26.2
	6.637499999999999	10		20.85	21.8
	7.91875	9.3		22.168750000000003	18.4
	7.9312499999999995	5.3		22.631249999999998	25
	8.181249999999999	8.7		23.6125	27.7
	9.45	7.8		23.70625	27.8
	9.762500000000003	9.6		24.681250000000006	29.8
	10.868750000000004	9.7		25.293749999999992	29.2
	10.799999999999999	13.6		25.912499999999998	33
	11.206249999999999	13.1		25.637500000000003	30.7
	10.506249999999998	8.6		23.86875	28.5
	9.806249999999999	11.5		25.80625	24.9
	10.568749999999998	8.3		26.55	21.6
	10.275	3		23.825000000000003	21.8
	10	6.3		25.5125	26.6
	10.856249999999998	6.2		26.274999999999995	13.8
	11.66875	5.1		26.025	18
Jun.	10.6375	4.3		26.575000000000003	23.5
	11.875	9.8		26.66249999999999	30.8
	11.293749999999998	8.5		25.268749999999997	22.7
	10.787500000000001	4.9		26.39375	25.5
	11.39375	5.4		27.018750000000004	26
	11.062499999999998	8.9		25.768750000000004	28.5
	10.662500000000001	9.7		26.41875	23.1
	11.11875	8.7		25.025	28.4
	10.487500000000002	11.8		26.462500000000002	25.3
	12.112500000000002	8.4		27.56875	28.1
	12.60625	13.5		27.6625	26.3
	12.506250000000001	12.3		28.618749999999995	31.7
	12.837500000000002	12.4		28.643749999999997	28.3
	13.4875	11.1		29.987499999999997	22.2
	14.212499999999999	9		29.337500000000002	21.4
	13.8	8.3		27.325	27.7
	12.843749999999998	10.4		27.9125	27.9
	14.143749999999997	10.8		29.78125	29.9
	14.5625	12.6		30.1875	29.3
	14.687500000000004	12.8		29.4375	31.1
	14.1875	15.9		29.55625	33.7
	14.431250000000002	14.7		28.2	32.6
	13.993749999999999	16		29.037500000000005	34.6
	14.15	13.7		29.0375	32.6
	14.493750000000002	13.2		30.968750000000004	30.1
	15.49375	13.6		30.68125	33.1
	15.54375	16.2		30.46875	35.9
	15.45625	17.4		30.525	38.5
	15.5125	16.8		31.75	37.1
	15.825000000000001	17.2		30.88125	36.4
Jul.	15.543750000000001	15.4		30.50625	34.7
	15.11875	13.8		30.01875	33.4
	15.4	16.3		31.81875000000001	34.2
	16.85625	17.3		31.750000000000004	34.6
	16.974999999999998	18.1		32.29375	35.6
	16.562500000000004	16.9		31.50625	36.3
	16.7375	16.6		31.50625	32.4
	15.906250000000002	19.4		31.924999999999997	32.8
	16.39375	18.3		31.725000000000005	30.8
	17.006249999999998	18		32.3625	35.5
	16.731249999999996	21.1		31.51875	37.4
	17.00625	21.4		31.21875	37.9
	16.19375	19.8		30.512500000000003	35.1
	15.612499999999999	19.1		30.268749999999994	33.6
	15.312500000000002	17.8		29.362499999999994	34.3
	15.637499999999998	19.1		29.75625	32.5
	15.518750000000002	15.2		30.98125	34.2
	16.40625	15.8		30.8625	35.9
	16.54375	19.7		30.593750000000004	38.1
	15.9625	13.6		30.137500000000003	26.8
	15.4375	7.8		30.793749999999996	26.1
	15.45625	9		29.137499999999996	30.5
	14.16875	12.7		28.906250000000007	33.8
	14.2875	12.5		29.624999999999996	36
	15.068750000000003	17.3		29.062499999999996	35.9
	14.181250000000002	15.6		28.13125	35.2
	14.46875	16.3		29.281249999999996	35.4
	14.693749999999998	17.9		30.800000000000004	34.4
	15.63125	17.4		29.90625	29.8
	14.887499999999998	14.8		28.975	23.6
	14.843749999999998	14.3		29.268749999999997	27.4
Aug.	14.381250000000001	14.2		29.51875	27
	13.968749999999998		14.9	28.712500000000002		30.4
	14.131250000000001		16.7	30.474999999999998		32.3
	14.487499999999999		17.1	30.156249999999996		28.7
	14.9		14.9	28.25625		23.8
	13.993749999999999		12.8	28.2375		28.5
	13.962499999999999		16.1	28.868749999999995		31.8
	14.506250000000001		18.2	29.537499999999998		36
	14.58125		20.8	28.675		33.4
	14.175		14.3	28.268750000000004		28.1
	14.38125		13.7	28.9875		28.2
	14.249999999999998		13.7	28.8125		28.8
	13.950000000000001		14.2	26.793750000000003		27.8
	13.643749999999999		14	28.10625		28
	14.13125		13.7	28.687499999999996		28.5
	14.412499999999998		14	29.8125		29.2
	14.018749999999999		13.8	28.59375		28.3
	13.212499999999997		13.3	28.1375		28.7
	13.1		13.6	29.0625		29.2
	13.593749999999998		13.1	28.775		28.5
	12.799999999999999		13	27.737499999999997		27.3
	12.418750000000001		11.9	26.656249999999996		27.1
	11.862499999999997		12.3	26.731250000000003		26.7
	11.718749999999998		11.2	27.318749999999994		26.5
	11.425		11	26.706250000000004		25.7
	10.6875		10.6	23.8375		24
	10.08125		10.6	23.293750000000003		24.5
	9.61875		10	23.724999999999998		23.8
	9.950000000000001		9.5	24.931250000000002		23.2
	10.75		10	24.175		24.7
	9.775		10.5	23.762499999999996		25
Sep.	9.81875		10.3	23.968750000000004		24.1
	10.08125			25.03125
	9.6375			24.024999999999995
	9.15625			24.13125
	9.681249999999999			24.60625
	9.012500000000001			22.725
	8.525			23.15625
	8.80625			23.012500000000003
	8.95625			22.325
	8.26875			22.625
	8.3375			23.006249999999994
	8.6375			24.506250000000005
	8.81875			22.349999999999998
	7.94375			21.418749999999996
	7.5249999999999995			21.35
	8.218750000000002			22.043750000000003
	7.4625			19.412499999999998
	6.331250000000001			19.724999999999998
	6.18125			19.743750000000002
	4.7437499999999995			18.418750000000003
	4.38125			16.70625
	4.48125			15.656249999999998
	3.9875			16.76875
	4.16875			16.3375
	2.9000000000000004			15.95625
	3.8312499999999994			16.24375
	4.737499999999999			17.11875
	1.71875			13.543750000000003
	0.71875			14.518749999999999
	1.3125			14.237499999999999
Oct.	2.1437500000000007			15.1125
	2.58125			15.168750000000001
	3.225			16.712500000000002
	2.7875000000000005			14.312499999999998
	1.5499999999999996			14.18125
	2.1000000000000005			15.043749999999996
	2.1875000000000004			14.65
	3.1624999999999996			15.756250000000003
	2.4437499999999996			13.618749999999999
	1.4625000000000001			13.6875
	1.3375000000000004			13.718750000000002
	-1.7312500000000004			9.437500000000002
	-3.7187499999999996			8.062500000000002
	-3.2187500000000004			8.83125
	-1.2999999999999998			10.18125
	-2.2937499999999997			8.425
	-0.975			11.343750000000004
	0.5687499999999996			10.7875
	-0.93125			11.58125
	-0.4249999999999999			10.63125
	-0.79375			10.112499999999999
	0.037500000000000006			10.13125
	-1.375			9.456250000000002
	-1.2999999999999998			9.225
	-1.99375			9.756250000000001
	-2.78125			9.5125
	-4.04375			7.349999999999999
	-6.375			4.1125
	-6.043750000000001			5.925000000000001
	-3.8			7.1875
	-2.8499999999999996			8.10625
Nov.	-2.4250000000000007			7.36875
	-3.843749999999999			7.125
	-5.343749999999999			5.106249999999998
	-5.131249999999999			6.2125
	-3.5437499999999997			6.325000000000001
	-5.625			5.675000000000001
	-5.48125			4.5
	-3.30625			6.750000000000001
	-3.71875			5.2375
	-5.38125			4.10625
	-7.1625000000000005			2.7125
	-7.00625			2.4375
	-6.3375			3.45
	-6.1812499999999995			2.7125
	-7.61875			2.0437499999999997
	-8.450000000000001			0.9562500000000002
	-6.468750000000001			2.4812500000000006
	-5.675000000000001			3.4875
	-7.04375			2.76875
	-8.106250000000001			1.55
	-9.75625			0.5687500000000001
	-9.35			1.4000000000000001
	-8.31875			1.5999999999999999
	-8.0125			1.1
	-8.968750000000002			1.09375
	-8.1			1.3750000000000004
	-6.375000000000001			1.58125
	-6.125			2.3812499999999996
	-6.6625			2.225
	-6.631250000000001			2.09375
Dec.	-8.868749999999999			0.4624999999999999
	-9.35625			0.03749999999999992
	-10.59375			-1.10625
	-9.593750000000002			-0.006249999999999645
	-8.56875			0.1062499999999999
	-8.08125			1.0812500000000003
	-7.65			1.2999999999999998
	-9.581249999999999			0.3624999999999996
	-10.624999999999998			0.7624999999999997
	-9.025			0.13749999999999996
	-8.700000000000001			-0.5374999999999999
	-10.549999999999999			-1.9499999999999995
	-10.368749999999999			-1.9375000000000004
	-11.481250000000003			-2.4312500000000004
	-12.7875			-2.6875000000000004
	-13.206250000000002			-2.2937499999999997
	-14.060000000000002			-4.72

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

39°C

Highest Temp

12 Jul. 26

-19°C

Lowest Temp

24 Jan. 26

Seasonal Breakdown

Hottest MonthJuly33.81°C

Coldest MonthJanuary-7.02°C

Wettest MonthMarch2.43mm

Windiest MonthMarch36.23km/h

Casper 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 Casper historically?

July is historically Casper's hottest month, with average maximum temperatures around 31°C. During peak heatwave events, the highest recorded temperatures have reached 39°C on 2026-07-12.

2. What is the coldest month in Casper historically?

February is Casper's coldest month, with average minimum temperatures around -11°C. The all-time record low of -36°C was recorded on 2011-02-02.

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

Casper's average annual rainfall is approximately 370.7mm, based on records spanning 17 years.

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

Casper historically records approximately 129.4 rainy days per year. May has the highest number of rain days at an average of 17.6 days.

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

The all-time highest temperature recorded in Casper is 39°C on 2026-07-12.

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

The all-time lowest temperature recorded in Casper is -36°C on 2011-02-02.

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

Casper experiences its strongest winds during December. The historic gust record of 66.6 kph was recorded on 2026-02-17.

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

Usually, Casper's humidity peaks in January at around 77.8% and drops to its lowest in August at approximately 37.1%.

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