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

Juneau Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-4.18125	-19.8		-0.08124999999999999	-9.3
	-5.6499999999999995	-21.1		-1.28125	-14.9
	-6.581250000000001	-19.5		-3.075	-14.8
	-7.056249999999999	-23.7		-3.9500000000000006	-20.5
	-7.824999999999999	-19.2		-3.71875	-4.8
	-7.162499999999999	-2.5		-3.0875	-0.5
	-6.3062499999999995	-11.4		-2.8812500000000005	-2.1
	-6.956249999999999	-12.9		-2.9125	-4.1
	-8.16875	-7.8		-3.4124999999999996	-2.3
	-8.231250000000001	-1.4		-3.962500000000001	0.8
	-6.768750000000002	-1.7		-3.5062500000000005	0.6
	-5.987500000000002	-0.9		-2.2687500000000003	1.9
	-4.906250000000001	0.6		-1.2437500000000001	4.5
	-4.25	-1.1		-1.0624999999999998	2.8
Jan.	-4.76875	-4.1		-1.73125	-0.7
	-5.581250000000001	-4.3		-1.9125	2
	-6.275	-1		-2.7375000000000003	1.6
	-6.012500000000001	-2		-2.5375	0.4
	-6.106250000000001	-3.2		-2.36875	-0.6
	-4.65	-5.7		-0.8062500000000002	-0.9
	-3.4687499999999996	-7.7		-0.7687499999999998	-2.2
	-3.04375	-8.8		0.11874999999999997	-4.9
	-2.06875	-9		0.6749999999999998	-5
	-1.8999999999999997	-9		0.925	-2.8
	-1.9687499999999996	-9.5		0.37500000000000006	-3.6
	-2.90625	-3.4		0.5375000000000001	0.3
	-3.48125	0.4		-0.6375	0.8
	-4.799999999999999	-2.3		-0.6499999999999998	0.2
	-5.031249999999999	-2.4		-1.1125	0.4
	-6.3187500000000005	-3.1		-1.8000000000000003	1.1
	-7.6625000000000005	-2.6		-3.0875000000000004	1.6
	-8.38125	-2.7		-4.1	1.4
	-9.018749999999999	-0.2		-4.65625	1.4
	-9.218749999999998	-1.5		-3.3249999999999997	1
	-7.13125	-0.3		-2.3249999999999997	0.9
	-7.2375	-2.5		-2.712500000000001	0.3
	-7.5375	-3.6		-3.0062499999999996	2.3
	-8.493749999999999	0.6		-3.7500000000000004	2.7
	-8.237499999999999	-1.1		-3.131249999999999	3.1
	-7.8500000000000005	-5.4		-2.8625000000000003	2.6
	-6.968749999999999	1.7		-2.3625	2.6
	-6.0249999999999995	-3.6		-1.3375000000000001	2.9
	-5.09375	-1.4		-0.5375	1.6
	-4.49375	-4.5		-0.23124999999999996	2.1
	-5.24375	-6.3		-0.6187499999999999	1
Feb.	-5.19375	-11.1		-1.2375	0.8
	-5.3999999999999995	-16.7		-1.1375000000000002	-5.7
	-5.375	-23.1		-0.5750000000000003	-13.3
	-4.2875	-23.5		0.31875000000000003	-9
	-3.281249999999999	-16.8		0.31875000000000003	-5.6
	-3.8625	-15.9		0.71875	-6
	-4.575000000000001	-19.9		0.13749999999999996	-10.1
	-6.0375000000000005	-22.1		-1.15625	-10.9
	-6.69375	-17.7		-1.7437500000000001	-3.7
	-6.525000000000001	-10.5		-1.1	-0.3
	-5.8812500000000005	-13.5		-0.6875	1.4
	-5.3187500000000005	-16.4		-0.24374999999999994	-6.3
	-4.8625	-17.5		-0.20625000000000016	-9.1
	-5.3062499999999995	-14.6		-1.3624999999999998	-1.8
	-6.1125	-14.5		-1.5062500000000003	-4.3
	-7.224999999999999	-11.4		-1.7437499999999995	-6.7
	-7.656249999999999	-11.3		-2.1624999999999996	-7.2
	-8.5625	-9.2		-2.425	0.1
	-8.549999999999999	-1.1		-2.2625	1.2
	-8.1125	-0.2		-2.00625	2.5
	-7.7437499999999995	-2.6		-1.85625	2.2
	-6.7437499999999995	-10.7		-0.8999999999999999	-2.1
	-5.3374999999999995	-13.3		-0.71875	-4
	-5.18125	-12.3		-0.9937499999999999	-4.1
	-5.2562500000000005	-18.6		-1.2562499999999999	-5
	-5.76875	-18.7		-0.40625000000000006	-6.7
	-5.731249999999999	-21.1		-0.3687500000000001	-6.2
	-5.793749999999999	-19.1		-0.9312500000000001	-3.8
Mar.	-4.925	-10.2		0.60625	-2.3
	-3.3624999999999994	-7.4		1.6812500000000001	-0.3
	-3.15625	-8		1.95625	-0.9
	-2.8000000000000003	-10.8		2.35	-0.6
	-2.9312499999999995	-11.6		2.2125	-0.3
	-3.656250000000001	-11.6		2.09375	-0.4
	-3.8187499999999996	-8.8		1.9375	-0.3
	-3.70625	-12.3		2.3375000000000004	-0.9
	-3.406249999999999	-12.2		2.6624999999999996	-1.5
	-3.437500000000001	-15.7		2.8812499999999996	-2
	-2.8312499999999994	-18.3		2.7937500000000006	-8.3
	-2.93125	-17.9		2.7749999999999995	-5.5
	-2.1874999999999996	-16.8		3.4874999999999994	-3.2
	-3.24375	-14		3.375	-1.8
	-2.9187499999999997	-15		3.2437500000000004	-1.8
	-2.0375	-11.1		2.8124999999999996	-0.4
	-2.1375	-10.2		2.9374999999999996	1.8
	-2.15	-11		3.1625	2
	-2.9375	-11.1		3.5125	1.8
	-2.0375	-5.5		3.19375	2.2
	-2.6375	-0.7		3.231249999999999	2.8
	-1.8374999999999995	-5		3.1875	3.7
	-1.0062500000000003	1.1		3.6562499999999996	2.2
	-1.2625	-3.2		3.5437499999999997	2.2
	-1.2375	-6.5		3.525	2.5
	-1.2	-2.7		3.3375000000000004	2.7
	-1.8937499999999998	-7.6		3.806250000000001	4.2
	-2.43125	-8.4		3.793750000000001	3.8
	-1.2375	-7.7		4.20625	3.7
	-1.2	-8.5		4.3812500000000005	1.7
	-0.7624999999999998	-10.8		5.03125	3.3
Apr.	-0.6875000000000001	-8.1		5.25	4.4
	-0.33125000000000004	-5.8		5.5375000000000005	2.7
	0.08750000000000002	1		5.8999999999999995	2.8
	-0.70625	0.9		5.35625	3.6
	-0.5750000000000001	-3.9		6.156249999999999	4.9
	0.09375	-4.1		6.23125	4.4
	-0.19374999999999992	-4.8		5.95625	3.4
	-0.20625000000000004	-5.3		5.76875	4.2
	0.31875	-2.8		6.0625	5.3
	0.45000000000000007	-3.5		6.3687499999999995	5.7
	-0.3375	-5.2		5.956250000000001	5.9
	0.59375	-4.2		6.7125	5.7
	0.2625	-3.4		6.4	4.9
	0.6687500000000002	0.6		5.824999999999999	7.8
	0.81875	0.7		5.83125	4.6
	0.70625	1.8		5.875	6.8
	1.6999999999999997	-1.2		6.06875	7.6
	1.3187499999999999	-0.9		6.65	6.1
	1.04375	-0.2		6.3374999999999995	7.3
	1.1874999999999998	-0.5		7.2125	8.7
	1.6125	2.2		7.925	9.2
	1.9500000000000002	2.2		7.6	6.9
	1.55	-3.4		7.35625	6.9
	2.04375	-1.3		8.424999999999999	6.7
	2.6125	3.7		9.587499999999999	6.9
	2.5687500000000005	3.6		9.537500000000003	5.8
	2.86875	-0.6		8.925	6.1
	3.2500000000000004	-1.5		9.874999999999998	8.9
	3.65625	1.7		9.924999999999999	7.4
	3.0437499999999997	4.6		9.6	7
May	3.2125	-1		10.049999999999999	8.1
	3.325	-1.8		11.218750000000002	8.7
	3.975	0.1		12.13125	6.9
	4.65625	1.8		12.356250000000001	7.6
	4.275	2.1		11.143749999999999	7.1
	4.574999999999999	4.3		11.3	6.4
	4.4125000000000005	2.5		10.9125	8.6
	4.6875	-1.9		11.612500000000002	5.7
	4.90625	3.9		11.356250000000001	6.4
	5.393750000000001	-2.3		10.6625	7.9
	5.43125	1.2		12.00625	11.4
	5.793749999999998	1.6		11.562499999999998	7.7
	5.199999999999999	-1.1		11.737499999999999	6.6
	5.65625	4.1		12.6	6.6
	6.125	-2		12.818749999999998	7.5
	6.175000000000001	-2.8		13.099999999999998	7.9
	6.581249999999998	-0.1		12.306250000000002	8.9
	5.725	-0.9		12.28125	12
	5.887499999999999	3.7		12.14375	12.3
	5.625000000000001	5.2		11.45	12.2
	5.262499999999999	3.8		10.981250000000001	8.8
	5.612500000000002	5.2		11.55625	7.2
	5.775	5		12.30625	7.6
	6.59375	2.8		13.162500000000001	10.9
	6.89375	2.8		12.868749999999999	12
	6.456250000000001	2.3		13.037500000000003	13.1
	6.79375	3.2		12.2125	12.6
	6.6937500000000005	2.9		12.06875	11.9
	6.74375	1.7		12.25	12.6
	6.3062499999999995	4.4		12.056249999999999	7.2
	6.51875	4.8		12.925	9.6
Jun.	6.59375	5.5		13.675	8.6
	7.35625	5.1		14.593750000000002	9.7
	7.91875	2.6		14.618750000000002	11.2
	7.75	1.8		14.575	11
	8.7625	2.4		15.287499999999998	13.6
	8.96875	5		15.899999999999999	13.3
	8.65	4.5		15.100000000000003	14.6
	8.612499999999999	5.4		14.45	12.5
	8.875000000000002	5.3		16.6125	13
	9.83125	4.1		15.968750000000002	11.9
	9.512500000000001	4.1		15.24375	10
	8.96875	4		14.868750000000002	11.9
	9.075000000000001	4.5		15.825000000000001	10.7
	9.65	5.9		17.05625	11.2
	9.9375	5.6		15.6625	12.1
	9.1125	3		14.26875	10
	8.30625	2		14.750000000000004	10.1
	8.725	2.1		14.899999999999999	9.1
	9.16875	1.1		16.225	9.3
	9.293750000000001	4		16.61875	12.6
	9.681249999999999	3.3		17.25	10
	10.0875	4.1		17.2375	8.6
	10.53125	3.5		16.80625	13
	10.062500000000002	3.2		15.08125	9.9
	9.85625	1.7		15.7625	12.2
	9.60625	4.4		14.862499999999999	10.1
	9.19375	4.7		13.53125	11.6
	9.4	5		14.656250000000002	10.4
	9.85	5.6		15.2875	11.7
	9.931249999999999	5.1		15.09375	12.7
Jul.	9.61875	4		15.343749999999998	9.9
	10.037499999999998	4.2		15.275	13.7
	9.956249999999999	3.6		15.468749999999998	14
	9.868749999999999	4.4		15.124999999999998	13.8
	9.850000000000001	3.8		15.881249999999998	13.3
	10.15	4		16.55625	14.9
	10.78125	5.9		17.55625	13.1
	11.0875	6.8		16.98125	12.4
	10.549999999999999	6.1		15.624999999999998	9.8
	10.137500000000001	3.6		14.887500000000001	12.3
	9.8625	3.2		15.131250000000001	13.8
	10.13125	4.9		15.350000000000001	10.3
	10.387500000000001	4.1		15.975	11.9
	10.518750000000002	3.7		16.131249999999998	13.4
	10.306250000000002	4.2		16.7375	13.5
	10.218749999999998	3.9		17.78125	13.6
	10.775000000000002	6.2		17.493750000000002	9.7
	10.887500000000001	5.6		16.79375	13.6
	10.299999999999999	6		16.993750000000002	12.4
	10.399999999999999	6		16.98125	11.7
	11.193749999999998	5.5		17.162499999999998	12.2
	10.9125	4.8		17.768749999999997	13.5
	10.76875	4.2		17.137499999999996	13.6
	10.66875	5.6		17.056250000000002	13.1
	11.106249999999998	5.5		16.131249999999998	10
	10.3375	5.3		15.668750000000001	13.2
	10.418750000000001	5.8		15.20625	13.8
	10.40625	6.2		15.450000000000001	14.2
	10.518749999999999	6		15.975000000000003	12.7
	10.175	7.3		15.887499999999998	14.3
	9.887500000000001	8.7		15.7375	15.2
Aug.	9.931249999999999	8		15.69375	13.9
	9.987499999999999	-0.2		15.4	7.8
	9.7875		-1.2	14.056249999999999		0.3
	9.1875		0.9	14.574999999999998		2.7
	9.35		2.4	15.0875		3.3
	9.318749999999998		-3.2	15.550000000000002		3.7
	9.368749999999999		-3.2	16.187499999999996		0.9
	9.7		-0.7	15.362499999999999		1.1
	9.475000000000001		-2.1	14.587499999999999		0.6
	9.799999999999999		9.4	14.3125		13.5
	9.137500000000001		9.1	14.1375		13.1
	9.05625		8.9	14.2		13.6
	8.9		9.2	14.55625		13.7
	8.856249999999998		9.2	14.556249999999999		13.6
	8.975		8.7	15.174999999999999		14.4
	8.593750000000002		8.5	14.062499999999996		13.6
	8.4875		8.4	13.775000000000002		13.5
	8.35625		8.3	13.73125		13.1
	7.875		7.7	13.450000000000001		12.9
	7.837500000000001		8.4	14.35		13.4
	8.793750000000001		8.7	13.6875		13
	8.46875		8.5	14.543750000000001		13.9
	8.675		9	13.7875		13.3
	7.9937499999999995		8.4	14.0125		13.1
	7.8375		8.1	13.3		13.2
	8.212499999999999		8.6	13.637500000000001		12.8
	8.06875		7.8	13.412499999999998		13
	7.40625		7	13.368749999999999		12.5
	6.8625		7	13.424999999999999		12.4
	7.09375		7	12.39375		11.8
	6.687500000000001		6.7	12.51875		12.1
Sep.	6.5062500000000005		7.1	12.975		12.3
	6.40625		7.1	11.6625		11.9
	6.4624999999999995			12.04375
	6.275000000000001			11.781249999999996
	6.606250000000001			11.331249999999999
	6.15			11.606250000000001
	6.1312500000000005			11.475000000000001
	5.606250000000001			10.387499999999998
	6.075			10.25625
	5.800000000000001			10.4625
	5.4125			9.768749999999999
	5.856249999999999			10.237499999999999
	5.974999999999999			9.856250000000001
	5.575			9.61875
	5.275			10.056249999999999
	4.2625			9.462499999999999
	3.5625			9.6625
	2.6375000000000006			8.8875
	2.9499999999999997			8.356250000000001
	3.3687500000000004			8.8875
	3.4375			8.618749999999999
	3.8750000000000004			8.7125
	3.6812500000000004			8.51875
	3.2875			7.918750000000001
	3.406250000000001			8.11875
	3.1875			7.6625000000000005
	3.0250000000000004			7.487500000000001
	2.71875			7.2375
	2.5375			6.6875
	2.4812499999999997			6.79375
Oct.	3			6.35625
	3.01875			6.725
	2.1625			6.69375
	2.5375			6.05625
	2.5687499999999996			5.65625
	1.3874999999999997			4.831249999999999
	0.012500000000000032			4.637499999999999
	0.006250000000000033			3.925
	0.46874999999999994			4.1
	-0.23125000000000004			4.812500000000001
	-0.3124999999999999			4.575
	-0.46875			4.2437499999999995
	-0.16250000000000006			4.3
	-0.26249999999999996			3.83125
	-0.11250000000000021			3.6937500000000005
	0.3625000000000001			3.2875
	-0.6125			3.5749999999999997
	-0.5499999999999999			3.4625000000000004
	-1.4625			2.7999999999999994
	-0.8437500000000004			2.24375
	-1.0437500000000002			2.8499999999999996
	-1.5			1.65625
	-1.8500000000000003			1.48125
	-2.40625			1.2249999999999999
	-3.0812500000000003			1.4625000000000001
	-3.4187499999999993			0.6875000000000001
	-2.93125			1.0624999999999998
	-2.2624999999999997			1.03125
	-1.6187500000000001			1.5874999999999997
	-0.8375			1.9437499999999999
	-1.6125			1.3249999999999997
Nov.	-4.03125			0.8624999999999999
	-3.99375			0.15
	-4.15625			-0.6687500000000001
	-6.4312499999999995			-2.1125000000000007
	-7.3875			-3.4062499999999996
	-7.037500000000001			-2.9812499999999997
	-6.406250000000001			-1.2249999999999999
	-5.1812499999999995			-1.44375
	-4.3812500000000005			-0.8375
	-4.06875			-0.8124999999999998
	-4.6812499999999995			-0.6499999999999999
	-4.581250000000001			-0.7374999999999998
	-5.13125			-0.53125
	-4.475			-1.09375
	-5.0249999999999995			-1.275
	-5.2375			-1.9375000000000002
	-6.743749999999999			-3.3749999999999996
	-6.1812499999999995			-2.0437499999999997
	-5.1187499999999995			-0.8624999999999996
	-4.112500000000001			-1.2249999999999999
	-4.531249999999999			-0.5875000000000004
	-4.962499999999999			-1.2937500000000002
	-4.9625			-0.5499999999999998
	-4.3			-1.1500000000000001
	-5.025			-1.5812500000000003
	-5.80625			-1.95625
	-5.85			-2.1937499999999996
	-5.612499999999999			-2.425
	-6.418750000000001			-2.10625
	-6.862500000000001			-2.6999999999999993
Dec.	-7.1499999999999995			-3.175
	-7.331250000000001			-3.5375
	-8.39375			-4.125
	-9.631249999999998			-5.331250000000001
	-9.71875			-6.306249999999999
	-8.837499999999999			-5.4375
	-8.1375			-4.5562499999999995
	-7.800000000000001			-4.75
	-8.093749999999998			-5.2
	-8.525			-4.725
	-7.95625			-4.1625
	-6.94375			-3.1125
	-6.824999999999999			-3.06875
	-6.5562499999999995			-2.74375
	-6.050000000000001			-2.5687499999999996
	-5.85625			-2.1437500000000003
	-4.413333333333333			-0.18000000000000005

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

15°C

Highest Temp

14 Aug. 26

-24°C

Lowest Temp

4 Jan. 26

Seasonal Breakdown

Hottest MonthAugust12.82°C

Coldest MonthMarch-12.13°C

Wettest MonthJanuary12.74mm

Windiest MonthMarch14.95km/h

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

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Frequently Asked Questions

1. What is the hottest month in Juneau historically?

July is historically Juneau's hottest month, with average maximum temperatures around 16°C. During peak heatwave events, the highest recorded temperatures have reached 27°C on 2019-07-07.

2. What is the coldest month in Juneau historically?

December is Juneau's coldest month, with average minimum temperatures around -6°C. The all-time record low of -27°C was recorded on 2025-12-22.

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

Juneau's average annual rainfall is approximately 2898.6mm, based on records spanning 17 years.

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

Juneau historically records approximately 264.5 rainy days per year. October has the highest number of rain days at an average of 24.4 days.

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

The all-time highest temperature recorded in Juneau is 27°C on 2019-07-07.

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

The all-time lowest temperature recorded in Juneau is -27°C on 2025-12-22.

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

Juneau experiences its strongest winds during December. The historic gust record of 43.5 kph was recorded on 2011-09-21.

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

Usually, Juneau's humidity peaks in January at around 90.8% and drops to its lowest in May at approximately 85.5%.

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