Simi Valley Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Simi Valley Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	5.03125	10.7		15.731250000000003	15
	6.3374999999999995	11		16.5625	16.2
	7.300000000000001	11.9		16.65	13.3
	7.175000000000001	11.2		16.95625	13.3
	7.418749999999999	9.7		17.775	11.7
	7.90625	7.6		17.493749999999995	16.4
	7.606249999999999	6.2		17.2875	15.3
	7.656250000000002	3		17.30625	13.4
	7.4125	4.1		16.1625	12.9
	7.3500000000000005	5.9		16.2625	17.4
	7.1875	7.7		16.362499999999997	18.4
	7.01875	7.9		16.5	20.3
	7.38125	9.7		17.08125	22.6
	7.662499999999999	12.9		17.762500000000003	25.2
Jan.	8.71875	11.7		17.931249999999995	24.1
	8.90625	11.3		18.175	24.7
	8.5875	10.9		17.6875	20.5
	8.05625	16		18.01875	27.9
	8.075	14.4		17.0375	27.4
	7.956249999999999	10.8		16.9625	24.3
	7.749999999999999	9.3		17.118750000000002	18.3
	7.45	11.3		16.70625	14.7
	7.512499999999998	11.2		16.9375	13
	7.137499999999999	9.6		17.75	19.4
	7.725	5.1		17.831249999999997	16.3
	8.00625	6.4		17.30625	18.4
	7.8374999999999995	5.4		17.8875	20.4
	8.468750000000002	8.1		19.025	20.3
	8.75625	9.6		18.268750000000004	23.8
	7.918749999999999	10.9		17.693749999999998	24.9
	7.462500000000001	11.3		17.775	25.6
	7.443749999999999	9.4		17.80625	22.2
	7.468750000000001	9.7		17.375000000000004	22.8
	7.4125000000000005	10.4		17.0875	26.8
	7.499999999999999	12		17.037499999999998	26.5
	7.956250000000001	12.6		16.831249999999997	22.2
	7.76875	12.7		17.443749999999994	21.4
	7.912499999999999	8.3		17.300000000000004	24.5
	7.70625	11.6		18.356250000000003	27
	8.431249999999999	11.6		18.625	23.9
	7.793750000000001	12.2		18.5125	17.3
	7.731249999999999	9.2		18.468750000000004	13.4
	8.118750000000002	3.8		18.63125	19.6
	8.26875	5.8		19.006249999999994	21.5
	8.14375	8.1		19.1625	17.9
Feb.	7.95	9		18.768749999999997	14.7
	8.01875	8.4		19.26875	11.6
	7.9875	8.7		18.081249999999997	11.9
	7.625	3.8		17.0375	10.3
	7.1375	-0.9		16.1375	10.3
	6.962500000000001	0.2		16.86875	10.4
	7.506250000000001	1.8		17.268749999999997	16.3
	7.156250000000001	5.5		16.581249999999997	23.3
	6.449999999999999	8.9		17.162499999999998	25.9
	6.85	12.6		17.962499999999995	23.9
	7.3875	12.1		18.06875	26.6
	7.5	11.6		18.099999999999998	29.9
	8.412500000000001	15.1		16.893749999999997	31.6
	8.0125	16.4		17.431250000000002	29.6
	8.16875	13.6		17.4875	26.5
	8.2	9.9		16.662499999999998	20.2
	7.95625	7		16.762500000000003	25
	7.325	10.2		17.475	19.9
	7.875	6.5		17.568749999999998	20.6
	8.00625	7.2		16.73125	20.6
	7.60625	9.7		17.53125	24.9
	7.099999999999999	10.9		17.406249999999996	27.4
	7.150000000000001	10		19.168750000000003	17.6
	8.11875	9.1		19.018749999999994	16.9
	9.043750000000001	7.5		18.75	27.5
	8.950000000000001	13.7		18.849999999999998	32
	8.837500000000002	14.6		19.0375	33.4
	8.9875	14.1		18.418749999999996	28
Mar.	9.525	12.2		19.75	30.3
	9.35	16.3		20.062500000000004	33.2
	9.33125	15.8		20.025	36.2
	8.831249999999997	18.3		19.3625	35.6
	8.837499999999999	18.1		19.20625	36.4
	8.993749999999999	19.1		17.981249999999996	34.7
	8.937499999999998	17.5		17.7375	28.1
	9.15625	17.7		18.6125	27.8
	8.981250000000001	15.5		18.81875	30.4
	8.70625	15		19.506249999999998	29.4
	8.8125	14		18.675	28
	8.64375	12.2		18.1375	30.6
	9.125	15.6		19.125	28.9
	9.23125	15		19.46875	31.3
	9.13125	15.6		20.006250000000005	31.4
	9.3	12.9		19.15625	23.3
	9.893749999999999	12.5		19.224999999999998	18.9
	9.975	12.2		20.099999999999998	22.9
	9.343749999999998	11.8		19.325	22.3
	9.162500000000001	13.1		19.4625	29.8
	9.468749999999998	17.5		20.20625	32.6
	9.64375	17.1		20.6	34
	9.9125	14.9		21.20625	29.9
	10.5	11.4		21.7375	28.1
	10.431249999999999	13		21.25	29.2
	9.993750000000002	12.7		22.14375	28.3
	10.7375	12.6		21.824999999999996	22.2
	10.931249999999997	11.6		20.968749999999996	21.8
	10.04375	11.4		19.4375	21.6
	9.575	9.2		18.8125	18.7
	9.25	9.8		19.23125	25.4
Apr.	9.45	11.1		20.41875	25.5
	9.89375	11.6		20.131250000000005	27
	9.831249999999999	11.6		21.556250000000002	29.4
	11.200000000000001	15.1		21.937499999999996	31.7
	11.056249999999999	12.6		21.90625	30.1
	10.44375	10.5		21.4625	25.6
	11.150000000000002	9.9		21.987499999999997	18.8
	11.44375	9.3		21.843749999999996	23.2
	11.512500000000001	12		21.7125	29.3
	11.343750000000002	11.8		21.224999999999998	26.6
	11.44375	11		21.6625	20.2
	11.48125	9.8		21.84375	19
	11.59375	8.8		21.68125	21.9
	11.537500000000001	9.9		23.08125	25.5
	12.206250000000002	11		23.900000000000002	27.1
	12.893749999999999	11.7		23.2625	26.7
	12.543750000000001	11.5		22.8625	26.5
	12.625	10.6		23.106250000000006	29.6
	12.5	12.1		23.387500000000003	18.5
	12.756249999999998	10.9		23.25	19.9
	12.35	9.4		21.806250000000002	19.9
	11.59375	9.8		20.506249999999998	26.6
	11.531249999999998	12		21.012500000000003	29.6
	11.837499999999999	12.6		21.906250000000004	27.3
	12.20625	12		22.087500000000002	28.9
	12.524999999999999	12		22.85	29.9
	12.09375	11.9		22.85625	32.9
	12.637499999999998	12.8		23.268749999999997	28
	13.16875	13.3		23.775	25.2
	13.2625	11.8		22.993750000000002	25.6
May	13.037500000000001	12.4		22.137499999999996	24.5
	12.20625	12.3		21.724999999999998	26.6
	12.537500000000001	11.5		21.206249999999997	24.8
	12.6625	11.3		21.9875	31.1
	12.50625	12.5		22.337499999999995	34.4
	12.7375	12.5		22.45625	29.8
	13.15	14.4		22.23125	33.1
	12.80625	12.4		22.06875	26.5
	12.56875	12.3		21.456249999999997	24.6
	12.362499999999999	11.7		21.725	24.1
	12.581249999999999	10.9		21.1	26
	12.531249999999998	11.6		20.95625	21.6
	12.225	10.2		22.175	19.7
	13.01875	9.4		23.112500000000004	20.8
	13.3625	10.4		24.04375	24
	13.968749999999998	12.2		24.40625	29.1
	13.80625	12.6		23.750000000000004	31.9
	13.987499999999999	14.5		24.46875	31
	14.218749999999998	13.9		24.456249999999997	26.6
	14.24375	11.7		24.8875	29.3
	14.606250000000001	13.2		24.775000000000002	30.2
	14.849999999999998	14.3		24	30.7
	14.331249999999999	14		23.34375	28.8
	13.999999999999996	14.3		23.73125	25.5
	14.712500000000002	12.9		25.16875	28.3
	15.11875	13		25.631249999999998	30.4
	15.19375	15.2		25.0875	33
	15.14375	16.5		25.39375	33.7
	15.38125	16.9		25.025000000000002	33.9
	15.16875	15		24.575	32.1
	15.406250000000002	12.9		25.581249999999997	30.5
Jun.	15.662499999999998	14.7		25.89375	31.4
	16.1375	13.5		25.6125	31.4
	15.662500000000001	15.5		25.31875	29.1
	15.631250000000001	15.2		25.612499999999997	25.1
	15.5625	14.3		26.368750000000002	23.8
	15.825	12.1		27.124999999999996	25.6
	16.48125	12.9		26.812500000000004	28.8
	16.2875	12.9		26.8125	30.2
	16.418750000000003	13.9		26.112499999999997	32.1
	16.28125	15		26.143749999999997	30.9
	16.556250000000002	13.9		26.65	29.2
	16.856250000000003	12.8		27.512500000000003	28.1
	17.38125	13.8		28.674999999999997	26
	17.4625	14.6		28.33125	25.3
	17.29375	13.2		27.449999999999996	26.4
	17.487499999999997	13.4		28.062499999999996	26.1
	17.549999999999997	12.3		28.34375	24.9
	17.475	12.3		27.56875	28.5
	17.05625	11.7		27.212500000000002	31.9
	16.65	13.8		27.1125	31.9
	16.725	14.8		27.212499999999995	30.6
	17.581249999999997	15.9		28.5875	33.1
	17.9875	16.3		28.606249999999996	34.1
	18.050000000000004	16		28.575000000000006	34.1
	18.0375	17.9		28.637499999999996	34.4
	18.4625	14.9		28.950000000000003	34.2
	18.681249999999995	16.2		28.856250000000006	34.8
	18.1875	15.9		28.806249999999995	37.1
	18.425	18.9		29.137500000000003	36.5
	18.575	18.1		29.0875	35.1
Jul.	18.23125	19.9		28.606249999999996	38.2
	18.112499999999997	21.3		28.049999999999994	38.3
	17.775	20.3		28.318750000000005	37.4
	17.7375	17.8		28.06875	33.4
	18.106249999999996	18.1		28.65625	33.7
	18.362500000000004	19.5		28.512500000000003	36.6
	18.093749999999996	19.7		28.275	34.8
	18.06875	18.7		28.506249999999998	33.4
	18.349999999999998	18		29.51875	37
	18.518750000000004	19.5		29.549999999999994	37.6
	18.5	20.1		28.70625	36.7
	18.249999999999996	19		28.187499999999996	39.1
	18.112500000000004	18.9		28.43125	36.2
	18.062500000000004	18.1		28.3125	34.7
	18.31875	18.5		28.668749999999996	33.3
	18.6375	16.9		29.0375	34.6
	18.5875	16.9		29.18125	36.6
	18.96875	18.5		29.800000000000004	38.5
	18.975	18.2		30.087499999999995	35
	19.2125	18.1		29.875	35.1
	18.70625	16.3		29.3	32.3
	18.287499999999998	16		29.19375	33.9
	18.18125	17.2		28.96875	37.6
	18.206249999999997	17.3		29.0375	36.1
	18.26875	19.1		28.768749999999997	36.6
	18.425	19.3		28.531249999999996	38.5
	18.362499999999997	20.1		28.09375	35.7
	18.275	19		28.5875	34.6
	18.525	18.8		29.068750000000005	33.7
	18.556250000000002	17.5		29.70625	33
	19.106250000000003	17.8		30	32.1
Aug.	19.275000000000002	15.6		30.443749999999998	32
	19.724999999999998	16.1		30.887499999999996	33.4
	19.706250000000004		16.5	30.10625		34.7
	19.28125		21.4	29.41875		34.7
	18.568749999999994		23.3	28.65		37.5
	18.43125		23.8	28.650000000000006		38.4
	18.731250000000003		23.4	29.018750000000004		36.1
	18.674999999999997		23.1	29.200000000000003		36.2
	18.312499999999996		23.9	28.95625		36.8
	18.443749999999998		23.7	29.04375		36.8
	18.881249999999998		18.7	29.356250000000003		29.4
	18.8375		18.7	29.775		30.1
	18.475		18.8	30.218749999999996		30.8
	18.59375		18.6	30.01875		30.6
	18.83125		19	30.9375		31.1
	19.03125		19	30.993749999999995		31
	19.05		19.2	30.325000000000003		30.4
	19.3375		19.3	30.299999999999997		30.2
	19.3625		19.3	29.83125		29.9
	18.781249999999996		19.3	29.631250000000005		29.9
	19.0875		19.1	30.206250000000008		30.5
	19.2375		19.8	30.656250000000004		31.2
	19.56875		19.8	31.381249999999994		31.6
	20.13125		19.7	31.775		31
	19.99375		19.6	30.775000000000002		30.1
	19.462499999999995		19.3	30.0625		30
	19.112500000000004		19.5	28.625		28.7
	18.6125		18.3	28.51875		27.9
	17.7		17.5	28.29375		27.8
	17.20625		17	27.95625		27.5
	16.993750000000002		16.9	27.6875		28
Sep.	16.849999999999998		16.9	28.093750000000004		28
	17.16875		17	28.231250000000003		27.8
	16.724999999999998			26.65625
	16.150000000000002			26.262500000000003
	16.231250000000003			26.93125
	16.50625			27.237500000000004
	16.412499999999998			26.65625
	16.29375			26.681250000000002
	16.762500000000003			28.06875
	16.7			28.79375
	17.28125			28.5
	16.58125			27.706249999999994
	16.9			28.312499999999996
	17.21875			27.731250000000003
	16.306250000000002			27.38125
	16.362499999999997			27.774999999999995
	16.437500000000004			28.175
	16.512500000000003			28.35625
	15.968749999999998			27.5
	15.075000000000001			26.85
	15.037500000000001			26.43125
	15.35			26.799999999999997
	15.35			27.474999999999994
	15.35			26.606250000000003
	14.924999999999997			25.56875
	15.043750000000001			25.7625
	14.36875			25.16875
	14.225			25.95
	14.518750000000002			25.10625
	14.262499999999998			25.099999999999998
Oct.	15.106250000000001			26.02499999999999
	14.774999999999999			26.63125
	14.9125			25.975
	14.7125			26.181250000000002
	14.493749999999999			25.76875
	14.21875			25.912499999999998
	14.106250000000001			25.60625
	14.425			24.4375
	14.3125			24.737499999999997
	14.568749999999998			24.7125
	13.656250000000002			23.35
	12.4			24.11875
	12.5125			25.099999999999998
	13.7625			25.262500000000003
	12.875000000000002			24.281250000000004
	12.268749999999999			23.85
	12.2375			23.2625
	12.3125			23.575
	12.506250000000003			22.95
	11.687499999999998			22.90625
	11.537500000000001			23.193749999999998
	11.956249999999999			24.16875
	12.281249999999998			23.587500000000002
	11.975			22.293750000000003
	11.23125			21.8
	11.049999999999999			21.2875
	9.775			21.3875
	10			21.69375
	10.66875			21.912499999999998
	10.925			22.262500000000003
	11.24375			22.78125
Nov.	10.70625			21.30625
	10.475000000000001			20.299999999999997
	10.056249999999999			20.375
	10.256249999999998			20.7875
	10.062500000000002			18.95
	9.600000000000001			18.650000000000002
	10.700000000000001			20.075
	10.25625			20.931250000000002
	9.71875			20.731250000000003
	9.731250000000001			19.775
	9.50625			20.35625
	9.38125			20.01875
	9.425			18.54375
	8.76875			18.556250000000002
	8.412500000000001			18.056250000000002
	7.918749999999999			18.24375
	8.587499999999999			19.20625
	8.83125			19.01875
	8.80625			17.924999999999997
	8.5875			17.525
	8.549999999999999			17.949999999999996
	8.225			18.556250000000002
	8.74375			19.293750000000003
	8.225			19.3
	9.14375			18.75625
	8.96875			19.23125
	9.125			18.1375
	8.28125			17.537500000000005
	7.85625			17.212500000000002
	7.65			16.83125
Dec.	7.168749999999998			16.737499999999997
	7.8			17.43125
	8.649999999999999			17.54375
	7.9624999999999995			16.85625
	7.48125			16.4375
	7.6125			16.862499999999997
	7.75			17.525000000000002
	8.4625			17.1
	8.25625			17.0125
	8.44375			17.05
	7.706250000000001			15.756250000000001
	6.3375			15.90625
	5.843750000000002			15.862499999999999
	6.29375			16.41875
	6.60625			15.6125
	6.58125			14.925
	5.913333333333333			15.153333333333332

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

39°C

Highest Temp

26 Jul. 26

-1°C

Lowest Temp

19 Feb. 26

Seasonal Breakdown

Hottest MonthAugust34.88°C

Coldest MonthFebruary8.95°C

Wettest MonthFebruary9.58mm

Windiest MonthApril24.29km/h

Simi Valley 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 Simi Valley historically?

August is historically Simi Valley's hottest month, with average maximum temperatures around 30°C. During peak heatwave events, the highest recorded temperatures have reached 45°C on 2020-09-06.

2. What is the coldest month in Simi Valley historically?

January is Simi Valley's coldest month, with average minimum temperatures around 8°C. The all-time record low of -1°C was recorded on 2013-12-08.

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

Simi Valley's average annual rainfall is approximately 396.5mm, based on records spanning 17 years.

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

Simi Valley historically records approximately 53.3 rainy days per year. December has the highest number of rain days at an average of 7.5 days.

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

The all-time highest temperature recorded in Simi Valley is 45°C on 2020-09-06.

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

The all-time lowest temperature recorded in Simi Valley is -1°C on 2013-12-08.

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

Simi Valley experiences its strongest winds during April. The historic gust record of 49 kph was recorded on 2026-04-03.

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

Usually, Simi Valley's humidity peaks in May at around 60.4% and drops to its lowest in November at approximately 47.6%.

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Simi Valley Historic Weather Records
Analyse hottest, coldest, windiest & wettest days

Simi Valley Weather Trend Graph

Yearly Summary 2026

Seasonal Breakdown

Frequently Asked Questions

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