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

Chehalis Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	-0.19999999999999993	-2		6.13125	7.9
	-0.13750000000000007	4.7		5.981249999999999	9.1
	0.5125000000000001	7.7		6.7749999999999995	10.4
	1.55	5.9		6.6	9.2
	2.2812499999999996	4.8		6.9125	6.6
	1.9312500000000001	3.4		7.481249999999999	7.2
	1.46875	3.5		6.9375	5.9
	1.7999999999999998	3.7		7.05	6.8
	1.3249999999999997	4.6		7.48125	7.9
	1.5125000000000002	5.6		6.98125	9.4
	2.24375	7		7.35	9
	2.06875	9.1		7.79375	10.3
	1.5624999999999998	4.6		6.74375	9.2
	0.8249999999999998	2.7		6.925	5.6
Jan.	0.36875	5.7		7.24375	8.1
	0.8499999999999998	3		7.4437500000000005	10.7
	1.8624999999999998	1.9		7.86875	10.7
	2.2125	-0.4		7.624999999999998	6.4
	1.60625	-0.2		7.575	5.5
	1.19375	-2.2		7.687500000000001	5.6
	1.575	-1.7		7.56875	8.7
	1.9500000000000002	-1.5		7.543749999999998	6
	1.8187499999999996	-1.4		7.762499999999999	2.3
	2.275	0.1		8.11875	7.7
	2.1374999999999997	-0.3		8.74375	6
	1.35	-0.2		9.012500000000003	8.8
	1.8312500000000003	3.9		8.8625	8.9
	2.36875	6.9		8.931249999999999	9.5
	2.3624999999999994	8.2		9.24375	9.5
	2.7375000000000003	8.3		7.90625	10.8
	2.7625	9.3		8.081249999999999	14.9
	1.6625	7.4		7.60625	11.1
	0.7375	7		7.856250000000001	9.8
	1.15	7.2		7.1875	12.2
	2.2500000000000004	8.5		7.550000000000001	15.4
	2.29375	1.3		7.750000000000001	14.2
	2.1125000000000003	5.4		7.8625	13
	0.65	8.1		7.956250000000001	9.2
	1.0625000000000002	6.4		7.7625	10.3
	1.1312499999999999	4.8		8.581249999999999	8.7
	0.5125000000000002	1.6		7.993750000000001	9.1
	1.8562500000000002	1.3		7.974999999999999	3.5
	1.7625000000000002	1.5		8.781250000000002	6
	1.1187500000000001	4.8		8.193749999999998	6.4
	1.7437500000000001	4.2		7.875	6.8
Feb.	2.05625	0.7		8.08125	3.5
	2.34375	0.4		8.274999999999999	4.2
	1.8437500000000002	-0.6		8.5625	4
	1.49375	-0.2		7.618750000000001	5.6
	1.475	0.6		8.0625	4
	1.275	-5		8.2375	4
	1.11875	1.9		8.106250000000001	6.5
	0.29374999999999996	6.2		7.7749999999999995	10.1
	-0.09375	2.3		7.39375	7.5
	0.54375	1.7		7.343749999999999	5.8
	0.012499999999999956	3		8.14375	6.8
	0.33125	3		8.25	8.7
	1.41875	4.7		8.59375	7.5
	1.81875	3.3		9.212499999999999	9
	1.6499999999999997	2.7		9.60625	12.6
	2.1375	0.8		8.26875	12.6
	1.49375	8.7		8.950000000000001	9.9
	1.5812499999999998	7.6		9.39375	10.3
	1.7874999999999999	5.3		9.606249999999998	6.3
	1.1624999999999996	6.7		9.524999999999999	9.2
	0.6124999999999999	8.9		9.34375	10.3
	0.6937500000000001	3.7		9.312499999999998	9.3
	1.2125	1.4		10.34375	5.7
	1.5	0.7		10.0625	5.8
	2.4812499999999997	4.5		10.7625	9
	2.5749999999999997	3.8		10.937500000000002	8.9
	3.19375	-0.2		9.91875	4.3
	3.3062500000000004	1.8		9.506250000000003	7.9
Mar.	2.78125	-0.4		10.587500000000002	9
	1.9	8.2		10.881250000000001	15.7
	1.4562500000000003	8.5		11.331250000000002	12.1
	2.1375	9.6		12.0625	11.9
	2.14375	9.8		12.437500000000002	13.7
	2.5125	9.2		12.475	12.2
	3.25625	3.9		10.525	8
	2.9937500000000004	1.9		11.381249999999998	10.3
	2.56875	3		11.293750000000001	8.3
	2.75	5.5		11.65	10.2
	3.40625	3.7		11.55	7.1
	3.8812499999999996	3.2		12.16875	10.8
	4.0375	3.3		12.575000000000001	13.2
	4.706250000000001	4.7		11.300000000000002	11.8
	3.9875	3		11.8	9.3
	3.9187499999999997	0.8		12.293750000000003	11.2
	3.0249999999999995	3		13.19375	12.9
	3.1687499999999997	3.3		11.84375	10.6
	2.9687499999999996	3.9		11.5125	11.7
	2.7187499999999996	2.6		12.018749999999999	16.1
	3.25625	2.8		11.193750000000001	19.6
	3.20625	7.2		11.0375	21.7
	3.775	6.5		12.524999999999999	22.6
	3.8375000000000004	5		12.487499999999999	14
	3.7187499999999996	1.8		12.381249999999998	18.4
	3.6250000000000004	2.5		13.674999999999999	21.5
	4.10625	6.5		12.618750000000002	23.2
	3.3125	9.2		12.29375	15
	3.36875	6.9		12.012500000000003	14.1
	3.0500000000000003	6.7		12.0625	12.2
	2.7125000000000004	6.1		13.39375	10
Apr.	2.8749999999999996	3.4		13.81875	8.2
	4.05625	0.7		14.262500000000001	12.3
	3.9624999999999995	2.5		14.462499999999999	14
	4.2625	4.8		15.8125	20.5
	4.956249999999999	6.5		14.5875	24.6
	4.718749999999999	8.2		14.99375	25.8
	4.675	9.4		15.124999999999998	14.5
	4.2	7.1		14.900000000000002	12
	4.3374999999999995	5.6		15.356250000000001	13.6
	5.05	4.7		15.30625	19.6
	4.881250000000001	3.2		15.39375	20.5
	5.2875	2.3		14.912500000000001	20.9
	4.856249999999999	5.5		14.100000000000003	15.5
	4.7875	6.8		14.275	15
	4.8625	4.2		15.950000000000003	21.2
	5.406249999999999	6.8		15.6	24.1
	5	8.2		16.3125	21.2
	5.474999999999999	9.2		16.818749999999998	25.7
	6.01875	10.1		16.981250000000003	29.5
	5.73125	11.3		16.35	24.7
	5.55625	10.4		15.475000000000001	20.9
	6.19375	9.8		17.099999999999998	16.4
	5.4	8.5		16.79375	19.4
	4.98125	6.6		18.00625	17.4
	6.075	7.2		18.5875	24.2
	6.26875	8.8		18.98125	18.3
	6.25625	9.1		18.900000000000002	24.4
	6.85625	9		18.918749999999996	28.1
	6.7875	11.6		19.712500000000002	15.3
	8.200000000000001	10.1		20.368750000000002	15.1
May	7.90625	6.2		18.918749999999996	11.7
	7.8812500000000005	6.1		18.23125	13.2
	7.6125	3.2		17.7875	18.4
	7.287500000000001	7.1		17.54375	18.5
	6.8687499999999995	6.1		17.625000000000004	16.3
	6.4750000000000005	4.8		17.6375	19.9
	6.96875	8		17.349999999999998	26
	7.606249999999998	9.4		17.462500000000002	24.9
	7.6625000000000005	9.7		16.4375	19.3
	6.968750000000001	6.9		17.05	24.3
	7.375000000000001	9.9		17.2875	15.3
	7.85	6.6		18.487500000000004	17.1
	7.793749999999999	8.2		18.725	24.6
	8.33125	10.8		18.8125	27.8
	8.13125	7.9		18.56875	15.8
	7.26875	5.7		19.231250000000003	17.8
	7.5875	5.5		19.606250000000003	22
	8.55625	5.9		20.199999999999996	26.8
	8.874999999999998	9		20.412499999999994	30.5
	8.5625	13		19.04375	20.6
	7.812500000000001	9.5		20.14375	20.1
	8.418750000000001	7.9		21.01875	15.8
	9.1375	8.8		22.09375	15.7
	8.900000000000002	5.8		21.375000000000004	17.9
	9.0875	8		20.900000000000002	16.4
	9.01875	10.4		19.10625	14.6
	8.125	8.6		18.5625	18.1
	8.462499999999999	6.7		20.137500000000003	23.8
	8.9	8.7		21.050000000000004	25.9
	8.84375	10.1		17.856249999999996	29.7
	8.075000000000001	13.3		18.23125	32.9
Jun.	7.881249999999999	13.3		19.24375	35.3
	7.925000000000001	11.3		19.268750000000004	20.5
	8.2	9.1		20.01875	25.1
	9.118750000000002	9.2		19.50625	27.7
	8.625	12.3		20.375000000000004	31
	9.137500000000001	9.6		20.781249999999996	21.8
	9.69375	11.4		22.83125	27.8
	9.962499999999999	10.6		22.60625	30.8
	9.7375	14.1		22.987499999999994	34
	10.112499999999999	14.4		22.575	31.9
	10.331250000000002	11.9		23.15625	19.8
	10.71875	12.6		24.068749999999994	17.7
	11.68125	11.5		23.518750000000004	17.4
	11.731250000000001	11.6		23.043750000000003	16.3
	10.9375	12		23.231250000000006	18
	11.11875	11.7		24.437500000000007	16.4
	11.15625	10.8		23.94375	19.4
	10.806250000000002	9.8		22.893749999999997	21.8
	10.762500000000001	15.1		22.90625	23.2
	10.281249999999998	11.9		23.581249999999997	21.6
	10.44375	11.2		24.718750000000004	26.8
	11.06875	10.6		25.54375	31.2
	11.3125	10		24.425000000000004	24.5
	11.26875	11.8		25.76875	26.1
	11.568750000000001	8.9		25.381249999999998	27.9
	11.88125	12.5		22.9625	23.4
	11.012500000000001	12		25.025	20.5
	11.4375	10.6		24.837500000000002	24.7
	11.55625	8.7		24.9	28.7
	10.8625	9.5		25.7375	31.4
Jul.	11.5125	12		25.862499999999997	30.2
	12.28125	13.9		24.581250000000004	22.5
	11.025	11.9		23.587500000000002	22.8
	11.068749999999998	10.3		24.581249999999994	24.5
	11.393749999999999	11.6		24.7625	28.1
	11.675	13.8		24.45	32.6
	11.36875	15		25.106250000000003	37.2
	11.5875	17		24.775000000000006	38.5
	11.268749999999999	16		24.574999999999996	27.3
	11.618749999999999	13.5		25.443749999999994	30.4
	11.56875	15.2		25.7875	21.9
	11.675000000000002	13.9		26.456249999999997	25.2
	11.29375	13.4		26.193749999999998	27.2
	11.68125	14.3		27.11875	22.2
	12.087499999999999	9.5		27.8875	27.5
	12.543750000000001	9.9		27.918749999999996	28
	12.656249999999998	10.8		26.581249999999997	31.5
	12.518749999999997	14.2		26.243750000000002	22.1
	12.41875	10.6		26.312500000000004	23.6
	12.8125	9.5		26.549999999999997	27.8
	12.53125	11.7		27.531250000000004	31
	12.80625	12.1		27.487499999999997	33.6
	12.893749999999999	12.1		26.268749999999997	33.8
	12.387500000000001	12.8		25.54375	31.7
	12.16875	13.2		25.062500000000004	30.9
	12.093750000000002	13		25.731250000000003	28.8
	12.625	12.4		26.062500000000004	28
	12.881250000000001	11.1		26.581249999999994	28.5
	13.106250000000001	14.8		27.10625	26.8
	12.86875	13.4		26.268750000000004	29.8
	12.84375			26.575000000000003
Aug.	13.193750000000001		9.6	26.474999999999994		27.7
	12.800000000000002		10	26.862499999999997		28.3
	12.95		10.2	27.206249999999997		30
	12.618750000000002		9.2	26.762499999999996		26.5
	12.387500000000001		10.7	25.462500000000002		27.7
	12.025		10.8	25.499999999999996		29.7
	12.200000000000001		9.6	25.575		26.3
	11.950000000000001		11.9	24.05		24.9
	12.243750000000002		11.6	24.631249999999994		24.8
	11.86875		11.6	24.925		25.5
	11.525		11.8	25.61875		26.5
	12.18125		12.3	25.500000000000004		26.1
	12.53125		12.4	25.83125		25.2
	12.243750000000002		12	24.5875		25.5
	11.99375		12.3	22.84375		23.3
	12.268749999999999		11.8	22.693749999999998		22.9
	11.85625		12	22.037499999999994		22.2
	11.200000000000001		11.2	23.59375		23.7
	11.318750000000001		11.3	25.093750000000004		25.3
	11.712499999999999		11.8	24.500000000000004		24.9
	11.293750000000001		11.2	24.53125		25.1
	11.2875		11.7	25.31875		25.2
	11.80625		12.1	25.00625		25
	11.868749999999999		12.1	24.900000000000002		24.9
	11.918750000000001		11.2	23.818750000000005		23.4
	11.61875		11.4	23.462500000000006		23
	11.2125		11.1	23.968750000000004		24.3
	11.006249999999998		10.7	24.25625		24.1
	10.5		10.7	22.043749999999996		23.3
	10.5		10.3	22.2		22.8
	10.112499999999999		10.6	22.731250000000003		22.9
Sep.	10.493749999999999			22.262500000000003
	10.2			21.29375
	10.331249999999999			20.24375
	10.943749999999998			19.737499999999997
	10.3125			20.543750000000003
	9.906249999999998			20.418750000000006
	9.79375			21.325
	9.475			20.04375
	10.025			19.318750000000005
	10.100000000000001			20.54375
	9.831249999999999			19.84375
	10.187499999999998			19.18125
	9.325			19.7625
	9.30625			19.4375
	8.89375			18.46875
	8.40625			18.675000000000004
	8.15625			18.662499999999994
	8.00625			18.36875
	7.812500000000001			18.24375
	7.8875			18.5875
	7.681250000000001			17.825
	8.012500000000001			19.6375
	8.706249999999999			18.7125
	8.13125			18.412499999999998
	8.3625			16.918750000000003
	7.643749999999999			15.825
	6.593750000000002			15.53125
	6.38125			16.243750000000002
	6.025			16.7625
	6.8125			16.4625
Oct.	7.137499999999999			16.66875
	7.249999999999999			16.512499999999996
	7.31875			15.431249999999999
	6.831249999999999			15.768749999999999
	7.0625			16.068749999999994
	7.5			15.16875
	7.206250000000001			14.8
	6.537500000000001			14.543749999999998
	5.99375			13.750000000000002
	6.35625			13.21875
	5.999999999999999			11.450000000000001
	4.875000000000001			11.8375
	4.975			12.86875
	6.00625			12.88125
	5.825			13.568749999999998
	5.5			13.06875
	5.681249999999999			12.5625
	5.79375			11.94375
	5.4750000000000005			12.012500000000001
	5.531249999999999			11.9625
	5.918750000000001			12.168750000000001
	6.4125			11.91875
	5.4625			11.25625
	4.293749999999999			10.868749999999999
	3.79375			11.14375
	3.687499999999999			10.181249999999999
	3.6312500000000005			10.275
	3.6125			10.975
	4.26875			10.34375
	5.5375			10.2125
	5.1625			10.643749999999999
Nov.	4.018750000000001			10.237500000000002
	2.9499999999999997			9.4625
	2.8312500000000003			9.05625
	3.2124999999999995			9
	1.9749999999999999			8.29375
	1.6625000000000003			8.493749999999999
	2.83125			8.881250000000001
	3.10625			8.9875
	2.2875			8.2125
	1.99375			7.89375
	2.6625			8.075000000000001
	3.55			8.96875
	3.2875			9.19375
	1.5499999999999998			8
	0.9500000000000001			7.0687500000000005
	1.6562499999999998			6.8375
	2.1750000000000003			7.631249999999999
	1.2062499999999998			7.087500000000001
	1.2874999999999999			7.212499999999999
	1.3625			7.03125
	1.4625000000000001			7.4437500000000005
	1.8499999999999999			7.106249999999999
	2.625			7.387499999999999
	2.5875000000000004			7.775000000000001
	2.3125			7.15
	2.85625			6.98125
	2.8062500000000004			7.675
	2.60625			7.156250000000001
	2.3187499999999996			7.24375
	1.7625000000000002			7.268750000000001
Dec.	2.0187500000000003			6.625
	1.8875000000000002			6.825000000000001
	1.7375			7.05625
	2.4499999999999997			6.85625
	2.2874999999999996			6.906250000000001
	2.61875			7.293749999999999
	2.5562499999999995			6.874999999999999
	1.9749999999999999			6.674999999999999
	1.76875			6.831249999999999
	1.8062499999999997			5.9937499999999995
	1.3125			6.212500000000001
	0.825			5.218750000000001
	1.5999999999999999			5.7625
	2.2187499999999996			6.9
	1.7125000000000001			6.581250000000001
	0.4499999999999998			6.218750000000001
	-0.44666666666666693			5.573333333333334

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

39°C

Highest Temp

22 Jul. 26

-5°C

Lowest Temp

20 Feb. 26

Seasonal Breakdown

Hottest MonthAugust28.95°C

Coldest MonthFebruary3.27°C

Wettest MonthMarch13.08mm

Windiest MonthAugust14.59km/h

Chehalis 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 Chehalis historically?

August is historically Chehalis's hottest month, with average maximum temperatures around 26°C. During peak heatwave events, the highest recorded temperatures have reached 43°C on 2021-06-28.

2. What is the coldest month in Chehalis historically?

February is Chehalis's coldest month, with average minimum temperatures around 1°C. The all-time record low of -10°C was recorded on 2010-11-24.

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

Chehalis's average annual rainfall is approximately 1433.9mm, based on records spanning 17 years.

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

Chehalis historically records approximately 187.7 rainy days per year. December has the highest number of rain days at an average of 21.9 days.

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

The all-time highest temperature recorded in Chehalis is 43°C on 2021-06-28.

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

The all-time lowest temperature recorded in Chehalis is -10°C on 2010-11-24.

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

Chehalis experiences its strongest winds during December. The historic gust record of 39.2 kph was recorded on 2025-12-17.

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

Usually, Chehalis's humidity peaks in December at around 89.7% and drops to its lowest in July at approximately 71.7%.

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

Chehalis Weather Trend Graph

Yearly Summary 2026

Seasonal Breakdown

Frequently Asked Questions

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