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

Napa Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	4.95	8.9		12.60625	12.9
	5.106249999999999	10.1		12.643749999999999	11.7
	5.268750000000001	11.8		12.58125	14.3
	5.5875	9.4		13.5125	12.4
	5.7124999999999995	8.8		13.437499999999996	12.5
	5.543749999999999	5.6		13.031250000000002	9.5
	5.4624999999999995	8.5		13.662500000000001	12.5
	6.6625	4		13.725	13.5
	6.4624999999999995	3.5		13.612499999999999	12.2
	5.806249999999999	3		13.250000000000002	13.6
	5.949999999999999	4.6		13.2625	16.1
	5.9437500000000005	1.1		13.85625	13.2
	6.36875	4.3		14.225000000000001	17.6
	6.13125	5.5		14.749999999999998	19.4
Jan.	5.731249999999999	8.9		14.250000000000002	19.9
	6.0562499999999995	7.8		14.09375	19.6
	6.175000000000001	6.7		14.25625	18.1
	6.6625000000000005	6.2		14.412499999999998	18.6
	6.83125	3.8		13.96875	15.7
	6.44375	3.5		14.725000000000001	16.4
	5.49375	9.2		14.4875	15.2
	6.53125	9		14.906249999999998	10.9
	6.375	7.1		15.00625	8.9
	6.1499999999999995	2		14.575	16.8
	6.43125	4.2		15.6	9.7
	6.21875	4.9		14.943749999999998	15.4
	6.0249999999999995	6.3		15.881249999999998	9.1
	5.9437500000000005	9.8		15.275000000000002	16.7
	6.3	2.8		14.612499999999999	14.2
	6.768750000000001	3.4		15.24375	14.6
	6.35	5.7		15.274999999999999	16.4
	6.3375	8.3		15.174999999999999	17.1
	6.85	4.7		14.2875	17.4
	6.10625	5		14.450000000000003	20
	6.05625	8.3		14.912499999999998	22.5
	5.85625	10.1		15.08125	19
	6.69375	11.5		16	18.9
	7.4375	7.1		15.500000000000002	11.8
	6.85625	8.5		15.38125	11.8
	6.856250000000001	10.3		15.618749999999999	16.9
	6.143749999999999	9.2		16.43125	12.5
	6.025	9		16.05	10.4
	6.3062499999999995	9		16.6	18.7
	7.2375	5.6		17.31875	10.5
	7.118749999999999	7.5		16.01875	9.6
Feb.	7.36875	9		16.45625	11.1
	6.8125	8.6		16.6375	10.4
	6.7250000000000005	6.4		15.856250000000003	9
	5.8999999999999995	3.1		15.075	9.7
	6.093750000000001	4		14.2625	9.9
	5.71875	3.3		15.3	8.9
	5.150000000000001	3.7		15.856250000000001	11.7
	5.500000000000001	6.8		15.687499999999998	14.2
	5.4624999999999995	10.6		15.431249999999997	17.1
	5.6000000000000005	11.3		16.081249999999997	13.1
	5.63125	11.2		16.2625	16.4
	5.906250000000001	12.9		15.45	19.5
	6.0249999999999995	10.1		16.068749999999998	20.8
	6.106249999999999	15.5		15.56875	22.8
	6.5375	11		16.18125	15
	7.031249999999999	11.1		14.9125	16
	6.7375	8.8		15.0125	12.3
	6.5625	8.3		15.556250000000002	16
	6.3375	5		15.11875	19.7
	7.01875	9		15.24375	22.5
	6.13125	11		15.91875	25
	6.406250000000002	12.2		16.3	23.3
	6.4312499999999995	10.4		16.16875	21.8
	7.018750000000002	7.5		16.799999999999997	20.5
	6.675	7.7		17.174999999999997	21.9
	7.44375	9.1		17.225	25.2
	7.300000000000001	8.1		17.25	19.3
	7.96875	9.2		16.88125	21.9
Mar.	7.91875	7.4		16.3375	26.5
	7.8375	11.4		17.737499999999997	29.3
	7.0562499999999995	11		17.075	29.9
	6.818749999999999	12.7		17.36875	31.2
	7.45625	12.7		16.8	31.6
	7.249999999999999	13.6		16.11875	30.7
	7.11875	10.7		16.8375	22.6
	7.59375	9.7		17.3875	22.7
	7.2124999999999995	8.6		17.387499999999996	25.5
	7.018749999999999	10.9		16.887500000000003	27.1
	7.175	7.7		16.58125	23.8
	6.9437500000000005	7.9		17.1375	23.3
	7.393750000000002	12		17.287499999999998	23.8
	8.225	7		17.56875	24.3
	7.824999999999999	7.6		17.725000000000005	23.9
	8.125	8.8		17.84375	19.5
	8.237499999999999	11.9		18.456249999999997	17.1
	8.281249999999998	12.1		18.268749999999997	16.2
	7.55	7.6		18.662499999999998	21.3
	7.15625	7.9		18.743750000000002	27.7
	7.33125	8.8		17.656249999999996	28.3
	7.3875	9.9		17.093749999999996	29.3
	7.518750000000001	9.5		17.937499999999996	22.6
	8.1625	8.8		18.3375	24.8
	7.531250000000001	9		18.993750000000002	26.4
	7.5375000000000005	11.1		20.4625	22.5
	8.40625	12.4		20.043750000000003	17.2
	9.06875	9.5		18.212500000000002	17.3
	7.95	8.7		18.58125	15.5
	7.668749999999999	7.5		18.881249999999998	18.1
	7.4750000000000005	7.5		18.39375	18.5
Apr.	7.18125	6.6		18.675	21.5
	8.100000000000001	7.8		19.293750000000003	24.2
	8.793750000000001	9.3		20.58125	25.9
	9.05	6.1		21.018749999999997	26.9
	9.049999999999999	9.2		21.000000000000004	22.6
	9.381249999999998	9.8		20.75	19.2
	9.85	9.9		21.79375	16.4
	10.025	9.4		22.343750000000004	17.5
	9.9875	8.3		21.875	22.4
	10.1125	9.2		20.668750000000003	19
	9.631250000000001	10		20.343749999999996	14.7
	8.975	8.9		20.6	17.2
	9.31875	8.5		20.781249999999996	18.9
	8.874999999999998	8		21.3125	23.1
	9.918750000000001	9		23.875	25.6
	10.59375	8.2		24.187499999999996	24.7
	10.75	10.7		24.581250000000004	22.1
	10.637499999999998	10.7		24.437500000000004	18.8
	10.806249999999999	10.4		23.918750000000003	18
	10.4	9.3		23.587500000000002	19.8
	10.21875	11.3		21.4875	17
	9.512500000000001	11.3		21.0125	22.7
	9.556249999999997	10.9		22.34375	22.9
	9.937500000000002	10.8		22.699999999999996	25.7
	10.275	10.8		23.15	26.9
	10.23125	11.7		22.981250000000003	25.4
	9.918750000000001	11.8		23.506249999999994	27.4
	10.399999999999999	10.9		23.525000000000002	23.5
	10.35	10.8		23.75625	27.5
	10.412500000000001	10.4		21.875	28.4
May	10.41875	9.9		21.6	29.9
	10.256250000000001	10.2		21.5	28.5
	10.350000000000001	9.5		21.462500000000002	27.2
	10.718749999999998	12.8		23.449999999999996	30.5
	11.15625	14.6		23.4625	32.8
	10.168750000000001	10.9		23.456249999999997	27.6
	10.237499999999999	10.9		23.68125	28.9
	10.256250000000001	10.3		23.325	22.6
	10.325000000000001	11.4		22.8875	20.7
	10.849999999999998	10.9		23.012500000000003	21.2
	10.918749999999998	10.4		21.6875	19.7
	10.743749999999999	10.4		21.78125	21.1
	10.393749999999997	8.9		23.312500000000007	23.1
	11.2125	11.5		23.90625	21.7
	11.443749999999998	12.5		25.306250000000002	20.4
	10.86875	11.7		24.537499999999994	26.2
	11.5625	9.9		25.26875	28.6
	12.05	10.6		25.225	28.9
	11.987499999999999	11.3		26.16875	24.2
	12.075000000000001	11.5		26.081249999999997	31.8
	12.9375	11.3		26.437500000000004	30.8
	12.8	11.4		26.425000000000004	32.1
	12.256250000000003	9.9		25.418749999999996	32.1
	11.6125	9.2		25.5875	27.7
	12.6125	9.4		26.168750000000006	31.2
	12.9	14.1		25.387500000000003	28.4
	12.618749999999999	12.7		25.6125	34.1
	13.34375	16.4		27.131249999999998	37.4
	13.574999999999998	13.8		27.893749999999997	32.3
	12.918750000000001	12.6		27.1	28.8
	12.843749999999996	13.4		26.48125	25.6
Jun.	12.268749999999999	12.9		26.781249999999996	27.8
	12.5125	12.3		27.25	24.8
	12.924999999999999	13.5		27.999999999999996	22.1
	13.25	12.9		27.79375	21.3
	12.581249999999999	14.2		27.331250000000004	21.9
	12.812499999999998	13.9		28.068749999999998	24.9
	13.125	13		29.118750000000002	26.6
	13.475000000000001	12.2		28.650000000000002	25.9
	13.15	11.1		28.062500000000004	25
	12.793750000000001	11.6		25.731250000000003	24.5
	12.55625	12.4		25.943749999999998	27.2
	12.975	12.3		27.24375	26.3
	13.05625	12.8		27.98125	26.8
	13.781250000000002	10.5		28.41875	30.1
	13.556249999999999	12.1		29.806250000000002	30.9
	14	12.8		29.181250000000002	24.1
	14	11.8		29.0875	23.3
	14.231250000000003	10.9		28.1125	25.4
	13.84375	11.7		28.05625	26.7
	13.55	13		28.456250000000004	26.5
	13.287500000000001	10.3		27.79375	25
	13.568750000000001	13		28.24375	23.6
	13.30625	12.2		28.456250000000004	26
	13.318750000000001	11.2		28.543750000000003	27.9
	13.225000000000001	11.8		27.756250000000005	29.1
	13.50625	12.3		28.975000000000005	27.5
	13.51875	10		28.593749999999996	28.4
	13.41875	13.2		27.993750000000002	30
	13.66875	15.2		28.887500000000003	32.7
	13.493749999999999	14.8		28.0875	34.8
Jul.	13.8625	15.9		28.300000000000004	35.5
	13.975000000000001	12.9		28.099999999999998	32.4
	13.612499999999997	12.6		27.600000000000005	28.5
	13.39375	12.8		26.725	24.6
	13.325	11.8		28.156250000000004	23.8
	13.825000000000001	13.7		28.387500000000003	27.8
	13.8875	16.3		28.356250000000003	32.7
	13.975	15.8		28.0125	25
	14.075000000000001	13.4		27.968750000000004	30
	13.80625	12.3		28.58125	31.7
	14.099999999999998	12.6		28.64375	31.3
	13.881249999999998	12.8		27.3	30.8
	13.8	12.3		29.149999999999995	30.7
	14.156250000000002	12.7		28.868750000000002	32.4
	13.774999999999999	13.6		28.481250000000003	31.2
	13.812499999999998	13.2		28.21875	30.2
	13.89375	13.3		28.36875	31.4
	13.85625	13.3		28.3625	32.4
	13.64375	14		29.118750000000002	33.4
	13.893749999999999	14		29.099999999999998	31.5
	14.068749999999996	13.7		27.875	27.2
	13.54375	12.7		26.593749999999996	27.2
	13.9875	12.6		28.243750000000002	27.7
	13.868749999999999	12.9		27.9375	28
	13.25625	13		27.01875	33.9
	13.262499999999998	13.2		27.812499999999993	29.8
	13.712500000000002	13.5		28.712500000000002	25.6
	14.037500000000001	12.2		28.668750000000006	25
	13.9	13		28.3	24
	14.05625	13.8		28.88125	22.1
	14.643749999999997	14.5		29.631249999999998	22.7
Aug.	15.031249999999998	13.4		31.068750000000005	25.1
	15.4125	11.6		30.6625	27.1
	14.94375		10.5	29.49375		20.3
	14.718749999999998		10	28.493750000000002		10.8
	14.26875		9.8	28.124999999999996		11.7
	14.293750000000001		11.8	28.23125		13.2
	14.081249999999999		11.7	27.09375		13.7
	14.049999999999999		11	28.2875		11.9
	14.312500000000002		10.4	28.987499999999997		11.1
	14.1875		11.2	27.79375		11.9
	14.162500000000001		14	28.125000000000004		28
	13.881250000000001		13.9	28.46875		28.4
	14.262500000000001		14	28.95		29.6
	14.3875		14.8	28.818749999999998		29.4
	14.381249999999998		14.8	27.893750000000008		28.3
	14.19375		14.2	28.8625		28.8
	14.2125		14	29.281250000000004		28.6
	14.674999999999999		14.7	29.8875		29.9
	14.881250000000001		15	28.31875		29.3
	14.156250000000002		14.5	29.006249999999998		29.6
	14.318750000000001		14.4	29.093750000000004		28.9
	14.45625		14.4	29.225		29.5
	14.875000000000002		15.2	30.718749999999996		30.9
	15.281249999999998		15.3	30.237499999999997		30
	15.468749999999998		15	30.343750000000004		29.8
	15.0625		14.8	29.575		29.1
	14.65		14.5	28.668750000000003		28.9
	14.856249999999998		15	28.99375		29.3
	14.46875		14.4	27.66875		27.5
	13.968750000000002		13.9	27.293750000000003		27
	13.46875		13.6	26.787499999999998		26.4
Sep.	13.087499999999999		13.1	25.675		26
	13.306249999999999		12.8	26.374999999999996		28.3
	13.20625			26.093750000000007
	14.006249999999998			25.075000000000003
	14.043750000000001			26.875000000000007
	14.443749999999998			27.768750000000004
	14.318749999999998			27.443750000000005
	13.1625			26.593749999999996
	13.306249999999999			29.2
	14.424999999999999			28.625
	14.5625			27.775
	14.05			27.96875
	14.0125			28.225
	14.287500000000003			28.262500000000003
	14.300000000000004			26.087499999999995
	13.793750000000001			25.368750000000002
	13.487499999999999			26.256249999999998
	14.05625			28.012500000000003
	14.049999999999999			27.112499999999997
	14.150000000000002			26.6875
	13.506250000000001			26.418749999999992
	13.73125			27.325
	13.881250000000001			27.812500000000004
	13.537500000000001			26.43125
	12.875000000000002			24.343749999999996
	12.8			24.3125
	12.4875			24.400000000000002
	12.1875			25.600000000000005
	12.693749999999998			24.9
	13.012500000000001			24.96875
Oct.	13.3125			25.224999999999998
	12.9			25.475
	13.062499999999998			24.606250000000003
	12.2875			25.0375
	12.75625			25.487499999999997
	12.65			24.043749999999996
	12.1875			24.356250000000003
	12.268749999999999			23.125
	12.443749999999998			22.75625
	12.01875			22.19375
	12.024999999999999			21.506249999999998
	11.156250000000002			22.025000000000002
	11.04375			22
	11.4			22.268749999999997
	11.4625			22.3375
	10.80625			21.3875
	10.6875			20.8375
	10.962499999999999			20.862500000000004
	10.3625			20.9125
	10.14375			20.4625
	10.0625			20.499999999999996
	10.375			20.70625
	10.15			20.29375
	9.46875			19.493750000000006
	9.29375			18.956250000000004
	8.912500000000001			18.668750000000003
	8.575			18.65
	8.55625			17.806250000000002
	9.331249999999999			18.375
	9.274999999999999			18.431250000000002
	9.0125			17.874999999999996
Nov.	9.33125			18.1125
	8.662500000000001			17.724999999999998
	8.15625			17.58125
	8.19375			16.162499999999998
	8.08125			15.712499999999999
	8.2875			16.406249999999996
	8.362499999999999			16.056250000000002
	8.512500000000001			16.40625
	8.11875			16.7625
	7.34375			16.125
	6.468749999999999			16.0625
	6.88125			15.124999999999998
	7.01875			14.63125
	6.262499999999999			14.962499999999999
	6.2875			15.118749999999999
	6.143750000000001			14.75
	6.925000000000001			15.11875
	7.675000000000001			15.193750000000001
	7.46875			14.175
	7.3625			14.70625
	7.69375			15.068750000000001
	7.1625			14.362499999999999
	7.187499999999999			13.96875
	6.931249999999999			13.543749999999998
	6.406250000000001			14.543749999999998
	6.774999999999999			14.9125
	6.499999999999999			14.775
	6.5875			13.875
	6.2625			13.21875
	5.775000000000001			13.075000000000003
Dec.	6.3			13.325
	5.93125			13.5
	6.1312500000000005			12.943749999999998
	6.75			12.981250000000001
	6.5687500000000005			12.593749999999998
	6.3687499999999995			12.531250000000002
	6.612500000000001			13.875
	7.2875000000000005			13.837499999999999
	6.937499999999999			14.04375
	6.59375			13.168750000000001
	5.6375			12.631249999999998
	4.956250000000001			11.806249999999999
	4.7875			12.368750000000002
	5.15625			13.006249999999998
	5.468750000000001			12.40625
	5.3062499999999995			12.93125
	4.513333333333334			12.686666666666666

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

37°C

Highest Temp

11 Jun. 26

1°C

Lowest Temp

12 Jan. 26

Seasonal Breakdown

Hottest MonthJuly28.93°C

Coldest MonthJanuary6.14°C

Wettest MonthFebruary8.08mm

Windiest MonthJune17.48km/h

Napa 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 Napa historically?

August is historically Napa's hottest month, with average maximum temperatures around 28°C. During peak heatwave events, the highest recorded temperatures have reached 43°C on 2020-09-06.

2. What is the coldest month in Napa historically?

January is Napa's coldest month, with average minimum temperatures around 6°C. The all-time record low of -2°C was recorded on 2012-01-17.

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

Napa's average annual rainfall is approximately 655.09mm, based on records spanning 17 years.

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

Napa historically records approximately 75.3 rainy days per year. December has the highest number of rain days at an average of 12.2 days.

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

The all-time highest temperature recorded in Napa is 43°C on 2020-09-06.

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

The all-time lowest temperature recorded in Napa is -2°C on 2012-01-17.

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

Napa experiences its strongest winds during May. The historic gust record of 42.1 kph was recorded on 2010-01-20.

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

Usually, Napa's humidity peaks in March at around 75.3% and drops to its lowest in October at approximately 57.1%.

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

Napa Weather Trend Graph

Yearly Summary 2026

Seasonal Breakdown

Frequently Asked Questions

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