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

Siena Weather Trend Graph

Temperature (°C)

Months

Months	Historic Min Temp.	Min Temp.	Forecasted Min Temp.	Historic Max Temp.	Max Temp.	Forecasted Max Temp.
	2.5999999999999996	-0.6		9.80625	4.3
	3.24375	3.2		10.187499999999998	11.7
	3.0687500000000005	4.1		9.95	10.7
	2.8937500000000003	4.1		9.312500000000002	7.6
	2.9437500000000005	3.2		9.36875	5.3
	3.11875	-0.5		9.343749999999998	3.5
	2.64375	-4.1		9.656249999999998	2.4
	2.5687499999999996	-5.2		10.262499999999998	2.4
	2.6875	2.6		9.506250000000001	11.3
	2.3625	0.6		9.2	6.9
	1.7499999999999998	-0.4		8.6875	8.2
	0.9875	-0.5		9.1625	7.4
	1.1437499999999998	3.8		9.3	9.8
	1.58125	6.7		9.325000000000001	11.5
Jan.	1.9	7.6		9.712499999999997	10
	1.7312499999999997	6.4		8.831249999999999	11.8
	2.0312500000000004	4.3		8.837499999999999	12
	2.0375	3.8		9.168750000000001	11.6
	1.11875	4.5		8.906249999999998	9.2
	1.9125	0.7		8.11875	8.1
	1.7062499999999998	-1.6		8.43125	7.6
	1.4249999999999998	-0.6		8.21875	8.5
	2.3125	2.2		8.668750000000001	6
	1.2437500000000001	6.7		9.393749999999999	9.7
	1.2687499999999998	5.1		8.906250000000002	9.8
	1.0499999999999998	2.1		8.7625	9.3
	1.2437500000000001	1.3		9.56875	10.1
	1.6124999999999998	5.8		9.524999999999999	9.5
	1.3187499999999999	5.3		9.53125	9.5
	1.95	4.3		9.55625	8.9
	2.56875	3.8		9.55	9.1
	3.1625	1.6		10.325	9.9
	3.2	0		10.281249999999998	7.2
	2.50625	6.3		10.218750000000002	9.9
	2.625	6.5		10.74375	9.3
	2.5437499999999997	5.9		10.175	10.9
	1.85	7.6		9.6	9.7
	1.7437500000000001	5.4		9.700000000000001	13.2
	1.8125000000000002	6.6		9.65625	11.7
	1.8624999999999998	7.4		9.893749999999999	10.8
	2.09375	3.9		9.599999999999998	12.1
	2.2875	7.1		10.04375	13
	2.15	5.1		9.7	11.2
	1.14375	4.6		9.6875	13.2
	1.89375	6.9		11.043750000000001	9.6
Feb.	1.91875	5.4		11.15	12.9
	2.75625	3.8		11.368749999999999	9.2
	3.4187499999999993	2.3		11.96875	12.2
	3.5812500000000003	3		12	12.6
	3.93125	5.7		11.625000000000002	11.3
	3.2	4		11.85	13.3
	2.7375000000000003	1.8		11.9	12.9
	3.6250000000000004	3.8		12.18125	15.8
	3.51875	5.5		11.76875	14.2
	3.7875	5.5		12.743750000000002	15.2
	3.375	6		12.093749999999998	16.1
	2.65625	7.4		11.01875	17.7
	2.15	6.6		11.55	17.1
	3.19375	6.4		11.906250000000002	16.8
	2.825	6.3		10.699999999999998	16.2
	3.375	5.6		12.85	14.5
	3.5874999999999995	8.1		13.262500000000001	16.4
	3.3125	7.1		12.218749999999998	12.2
	3.25625	6.4		11.193750000000001	17.6
	3.2125000000000004	6.8		12.031250000000002	16
	3.1687499999999997	6.3		12.0375	16.5
	2.9750000000000005	9.5		11.456249999999999	14
	2.79375	6.9		12.56875	15.9
	3.73125	6		12.518749999999999	15.7
	3.58125	7		12.875	15.2
	3.8625	7.3		13.41875	15.1
	4.09375	6.4		13.675	15.3
	4.75625	5		14.437499999999998	13.4
Mar.	4.40625	8.7		14.2	16
	4.28125	7.2		14.39375	16.6
	4.4125000000000005	5		14.13125	17.5
	4.54375	3.7		14.306249999999997	10.9
	4.25625	4		14.325000000000003	12.4
	4.68125	2.8		14.325	13.6
	4.5249999999999995	2.3		14.524999999999999	13.6
	5	1.7		15.325000000000003	14
	5.15	2.6		16.1875	14
	5.131249999999999	2.9		15.8	16.4
	4.90625	4.1		15.05625	16.1
	4.8999999999999995	2.9		14.612500000000002	8
	5.5062500000000005	0.3		14.45	10.6
	5.3062499999999995	0.8		15.78125	15.7
	5.93125	3.9		16.674999999999997	12.7
	7.0375	2.8		17.3125	16
	7.012499999999999	2.2		17.368750000000002	12.3
	6.668749999999999	4.7		16.999999999999996	9.8
	6.1187499999999995	6.5		16.325000000000003	12.1
	5.5562499999999995	5.4		16.8625	16.9
	6.131249999999999	4.8		15.568750000000003	20.5
	6.0249999999999995	7.3		15.418750000000001	21.4
	5.3125	6.4		17.200000000000003	20.2
	5.837500000000001	7.1		17.2	21.2
	6.0062500000000005	6.5		17.912499999999998	21.5
	6.225	7.1		17.53125	21.8
	6.45	7.5		17.45	22.6
	6.1625000000000005	8		17.225	22.1
	7.487499999999999	9.4		17.93125	22.8
	7.3875	11.4		17.462500000000002	17.8
	6.937500000000001	11		18.05	17.6
Apr.	7.96875	9.4		18.05625	18.3
	6.9625	9.2		18.3	22.9
	6.787500000000001	9.5		17.25	23.8
	6.6625	10.5		17.90625	23.2
	6.762500000000001	10		17.4875	23.1
	6.3999999999999995	9.3		18.36875	20.2
	7.475	9.2		18.0625	18.4
	7.737499999999999	6.3		18.3125	16.5
	8.775	4		17.88125	18
	8.624999999999998	5.1		18.724999999999998	21.7
	8.350000000000001	5.9		19.124999999999996	20.9
	8.125	5.8		19.012499999999996	22.1
	8.474999999999998	8.4		18.368750000000006	23.5
	8.831249999999999	8.3		19.581249999999997	23.5
	8.924999999999999	7.8		20.162499999999998	23.4
	9.43125	5.5		19.79375	18.9
	9.19375	4.2		19.825	18.2
	9.812500000000002	5.2		18.874999999999996	22.2
	9.499999999999998	6.8		18.99375	22.3
	9.462499999999999	7.7		19.725	21.8
	8.987499999999999	11.1		19.493750000000002	18.3
	9.087500000000002	12.1		19.56875	18
	9.23125	10.5		19.9125	20.6
	9.543750000000001	10		20.231250000000003	20.2
	9.53125	9.8		20.993750000000002	23.5
	10.10625	11.8		21.29375	16.2
	10.65625	10.6		21.94375	21.5
	10.89375	9.2		21.2625	19.8
	10.437500000000002	8		20.68125	17.9
	9.718749999999998	7.4		20.2125	19.8
May	9.35625	7.1		19.14375	15.1
	9.75	7.7		19.425	15
	9.6875	5.8		20.2625	20.5
	9.806250000000002	6.7		21.63125	20
	10.525	7.9		21.231250000000003	19.3
	10.418750000000001	8.7		20.875	22.7
	10.9	10.4		21.35625	25.5
	10.950000000000003	11.6		21.5625	26.1
	11.556249999999999	12.4		22.437500000000004	26.7
	11.456249999999999	13.2		22.6125	27.3
	11.10625	13.8		23.1	29.6
	11.624999999999998	15.8		23.23125	31.7
	11.950000000000001	16.3		23.19375	30.8
	12.212499999999999	16.1		23.481250000000003	29.5
	12.337499999999999	14.2		23.381249999999998	29.9
	12.218750000000002	13.4		22.981249999999996	30.1
	11.812500000000002	14.7		23.39375	28.9
	11.9	13.7		24.137500000000003	28
	12.318750000000001	13.8		24.46875	27.1
	13.143749999999999	15.1		25.11875	26.2
	13.168750000000003	12.9		25.775000000000002	27.6
	13.7125	13.2		24.956250000000004	22.3
	13.862499999999997	12		25.525000000000002	24.7
	14.243750000000002	12.2		25.974999999999998	28.8
	14.525	13.3		26.256249999999998	30.1
	14.231250000000001	13.5		26.656250000000004	29.5
	14.950000000000003	14.2		26.3125	28.5
	15.056249999999997	12.5		26.762500000000003	25.9
	15.156249999999998	10.8		27.11875	28.6
	15.025	12.9		27.012499999999996	30.4
	15.325000000000003	13.5		26.656249999999996	30
Jun.	15.125000000000002	12.4		26.1625	30.6
	15.0875	13.6		26.950000000000003	32.7
	15.25	15.4		27.418749999999992	33.6
	15.43125	16.3		28.1	35.9
	15.831249999999999	18.1		28.4875	37
	16.14375	18.1		28.69375	37.6
	15.70625	18.1		28.931250000000002	37.9
	15.9875	18.5		29.1625	36.5
	16.018750000000004	19		28.806250000000002	37.1
	15.881249999999998	18.4		28.637500000000003	36.8
	15.981249999999998	17.4		28.762499999999996	35.8
	16.40625	18.4		29.83125	37
	17.056250000000002	18.8		30.66875	38.5
	17.312500000000004	20.2		30.04375	38.4
	17.09375	19.2		30.118749999999995	38.9
	17.443750000000005	18		30.325000000000003	35.1
	17.66875	18.1		30.3	34.6
	17.43125	17.5		30.925000000000004	30.2
	18.03125	17.1		31.343750000000004	32.8
	18.15	18		30.825	34.1
	17.8875	17.8		30.58125	35.1
	17.881249999999998	16.7		31.087500000000002	35
	18.275	16.4		31.549999999999997	35.4
	18.181250000000002	17.1		30.64375	35
	17.531249999999996	17.3		31.1625	37.1
	17.643750000000004	18.2		31.400000000000002	35.8
	17.8125	17.8		31.862500000000008	35
	18.437499999999996	17.4		31.743750000000002	36.1
	18.7	19.8		31.056250000000002	38.3
	18.037499999999998	18.9		30.725	36.7
Jul.	17.6	18.9		30.73125	38.7
	17.95	19.5		30.39375	39.1
	17.731250000000003	20.1		31.056250000000002	38.8
	17.875000000000004	20.2		31.8625	36.2
	18.543749999999996	19.6		32.1625	36.4
	18.500000000000004	19.6		32.5375	36.5
	18.724999999999998	19.1		31.91875	37
	18.4625	17.1		32.118750000000006	33.8
	18.806250000000002	15.7		32.075	34.2
	18.49375	14.7		31.331250000000004	32.4
	18.79375	14.1		30.575	34.1
	18.218750000000004	17.9		30.50625	33
	17.893749999999997	16.8		30.387499999999996	33.7
	18.10625	18.4		30.66875	37.3
	18.28125	20.2		30.94375	38.8
	18.018749999999997	20.3		31.175000000000004	38.9
	18.44375	20.3		32.2375	39.9
	18.61875	18.9		33.05625	37.9
	18.743750000000002	19.2		32.575	39.6
	19.1125	18.7		32.36875	39.2
	18.96875	18.9		32.06875	38.9
	18.525000000000002	19.1		31.475	38.9
	18.362500000000004	19.2		31.843749999999996	39.2
	18.431250000000002	18.8		31.9125	38.7
	18.6125	19.2		32.35	38.8
	18.912499999999998	19.5		32.4875	38.3
	18.674999999999997	19.7		32.4	38.5
	18.76875	19.7		32.46875	39
	18.362499999999997	18.3		32.15	39.3
	18.70625	18.4		32.15	38
	18.39375		24.1	31.79375		33.4
Aug.	17.956249999999997		24.1	31.1375		32.3
	18.043750000000003		23.4	31.1875		31.6
	17.937499999999996		23.2	31.65		31
	18.400000000000002		21.8	31.499999999999996		32.2
	18.26875		23.6	30.349999999999998		30.8
	18.1625		22.5	30.699999999999996		29.8
	18.21875		22.8	31.16875		28.8
	18.55		21	31.875		30.8
	18.525000000000002		20.7	31.437499999999993		30.2
	18.1375		20.7	30.874999999999996		29.8
	17.956250000000004		20.5	30.6625		29.6
	17.4375		20.2	30.9		29.8
	17.43125		20.3	30.368750000000002		29.7
	17.3		19.9	29.38125		29.1
	16.86875		19.9	29.900000000000002		29.4
	16.956249999999997		19.6	29.581249999999994		28.8
	16.993750000000002		19.5	28.85		27.7
	16.3375		19.2	27.218749999999996		27.4
	15.56875		18.9	27.549999999999997		27.4
	15.906249999999998		18.8	27.275000000000006		27.5
	15.981250000000001		19	27.650000000000002		27.6
	15.950000000000001		18.9	27.9375		27.5
	15.981250000000001		18.5	28		27.6
	15.94375		18.7	27.68125		27.5
	15.443750000000001		18.8	27.7125		27.6
	15.5		18.7	27.549999999999997		27.3
	15.28125		18.4	26.843749999999996		26.8
	15.493749999999999		18.3	27.5125		27.2
	15		17.8	27.33125		26.8
	15.06875		17.5	27.318749999999998		26.1
	15.143749999999999			26.68125
Sep.	15.325			26.718750000000004
	15.624999999999998			26.21875
	15.143749999999999			25.618750000000002
	14.487499999999999			25.66875
	14.575			23.968750000000004
	13.806249999999999			24.318749999999994
	13.387500000000001			24.5375
	13.399999999999999			24.60625
	13			23.8
	12.762500000000003			23.143749999999997
	13.218750000000002			23.062499999999996
	12.362499999999999			22.893749999999997
	12.387500000000003			23.662499999999998
	12.681250000000002			23.4625
	12.187499999999998			23.08125
	12.0375			23.19375
	12.356250000000001			22.31875
	12.3125			22.374999999999996
	11.90625			22.399999999999995
	11.85			22.293750000000003
	12.506250000000001			21.843749999999996
	11.81875			21.356250000000003
	10.93125			21.03125
	11.500000000000002			21.412499999999998
	11.1625			21.3625
	11.549999999999999			20.706250000000004
	11.568749999999998			21.0875
	10.91875			20.86875
	10.937500000000002			20.981250000000003
	10.762500000000003			20.137499999999996
Oct.	10.575			20.525000000000002
	10.581250000000002			20.10625
	10.175			19.71875
	9.881250000000001			20.124999999999996
	10.70625			20.893749999999997
	10.43125			20.356250000000003
	10.818749999999998			19.79375
	10.368749999999999			19.4375
	9.9875			19.831250000000004
	10.499999999999998			19.331249999999997
	10.612499999999999			19.868749999999995
	10.687499999999996			19.63125
	10.274999999999999			19.05625
	9.85			18.743750000000002
	8.962499999999999			18.425
	9.356250000000001			18.287499999999998
	9.1625			18.287499999999998
	8.975			17.481250000000003
	9			17.525000000000002
	9.343749999999998			17.74375
	9.7			17.53125
	9.63125			17.20625
	8.968749999999998			16.349999999999998
	8.46875			16.274999999999995
	7.968750000000001			16.474999999999998
	7.387500000000002			15.80625
	7.800000000000001			15.587499999999997
	7.537499999999999			15.80625
	7.40625			14.93125
	7.218750000000001			15.218749999999996
	7.55			15.081249999999999
Nov.	7.525			14.587499999999999
	6.5687500000000005			14.106250000000001
	5.737500000000001			13.768749999999999
	5.6812499999999995			13.23125
	5.937500000000001			13.881250000000001
	5.974999999999998			13.106250000000001
	5.518750000000001			12.406249999999998
	5.325000000000001			12.15
	5.112499999999999			12.562500000000004
	5.49375			13.168750000000001
	4.7875			12.14375
	4.19375			11.21875
	4.081250000000001			11.21875
	4.012499999999999			11.03125
	4.200000000000001			11.593750000000002
	3.8187499999999996			10.85
	4.2			11.2625
	4.225			11.168749999999998
	4.1000000000000005			10.293750000000001
	3.2500000000000004			10.1875
	3.46875			10.943749999999998
	4			10.8625
	3.68125			11.087499999999997
	4.462499999999999			11.1125
	3.5375			10.731250000000001
	3.2375000000000007			10.368749999999999
	3.0125			10.15625
	3.1312499999999996			9.7625
	2.88125			9.837499999999999
	2.2			9.749999999999998
Dec.	3.4437499999999996			10.55
	3.8375000000000004			10.3375
	2.9562500000000003			10.568750000000001
	2.2937499999999997			10.18125
	2.09375			9.456249999999999
	3.0124999999999997			9.768749999999999
	2.96875			10.48125
	3.84375			10.725
	4.3875			11.224999999999998
	4.5687500000000005			10.937499999999998
	4.787499999999999			11.093749999999998
	3.475			10.46875
	2.98125			10.23125
	2.2562499999999996			9.456249999999999
	2.76875			9.41875
	2.4499999999999997			8.96875
	2.2933333333333334			9.46

Max Temp.

Historic Max Temp.

Min Temp.

Historic Min Temp.

Yearly Summary 2026

40°C

Highest Temp

31 Jul. 26

-5°C

Lowest Temp

8 Jan. 26

Seasonal Breakdown

Hottest MonthAugust38.79°C

Coldest MonthJanuary2.54°C

Wettest MonthJanuary5.16mm

Windiest MonthJuly23.4km/h

Siena 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 Siena historically?

August is historically Siena's hottest month, with average maximum temperatures around 32°C. During peak heatwave events, the highest recorded temperatures have reached 40°C on 2024-07-31.

2. What is the coldest month in Siena historically?

January is Siena's coldest month, with average minimum temperatures around 2°C. The all-time record low of -8°C was recorded on 2018-02-28.

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

Siena's average annual rainfall is approximately 918.02mm, based on records spanning 17 years.

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

Siena historically records approximately 167.5 rainy days per year. November has the highest number of rain days at an average of 16.7 days.

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

The all-time highest temperature recorded in Siena is 40°C on 2024-07-31.

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

The all-time lowest temperature recorded in Siena is -8°C on 2018-02-28.

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

Siena experiences its strongest winds during March. The historic gust record of 45.4 kph was recorded on 2015-03-05.

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

Usually, Siena's humidity peaks in November at around 82.7% and drops to its lowest in August at approximately 59.7%.

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

Siena Weather Trend Graph

Yearly Summary 2026

Seasonal Breakdown

Frequently Asked Questions

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