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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, in Alton, Florida, is another enjoyable winter month, with an average temperature fluctuating between 62.2°F (16.8°C) and 44.2°F (6.8°C). Alton reaches its lowest average temperatures in January, measuring 62.2°F (16.8°C) at the peak and 44.2°F (6.8°C) at the lowest. Weather in January »
Weather in February
February, the last month of the winter in Alton, is also an enjoyable month, with temperature in the range of an average high of 67.1°F (19.5°C) and an average low of 48.4°F (9.1°C). Welcoming February, Alton notes an average high-temperature of a still enjoyable 67.1°F (19.5°C), nearly consistent with January's 62.2°F (16.8°C). Weather in February »
Weather in March
March, the first month of the spring in Alton, is a pleasant month, with an average temperature varying between 52.7°F (11.5°C) and 73°F (22.8°C). A slight uplift of average high-temperatures is noted in March, with temperatures adjusting from an enjoyable 67.1°F (19.5°C) in February to an agreeable 73°F (22.8°C). Weather in March »
Weather in April
April is a moderately hot spring month in Alton, Florida, with an average temperature ranging between max 80.2°F (26.8°C) and min 59.7°F (15.4°C). Alton perceives a slight temperature ascent during April, with average high-temperatures adjusting from a pleasant 73°F (22.8°C) in March to a warm 80.2°F (26.8°C). Weather in April »
Weather in May
The last month of the spring, May, is a hot month in Alton, Florida, with an average temperature ranging between min 65.8°F (18.8°C) and max 86.4°F (30.2°C). The shift into May is accompanied by a modest temperature increase, with the average high-temperature edging up from a moderately hot 80.2°F (26.8°C) in April to a tropical 86.4°F (30.2°C). Weather in May »
Weather in June
The first month of the summer, June, is still a hot month in Alton, Florida, with an average temperature ranging between max 90.3°F (32.4°C) and min 72.3°F (22.4°C). During June, Alton records an average high-temperature of a still hot 90.3°F (32.4°C), marking a slight divergence from May's 86.4°F (30.2°C). Weather in June »
Weather in July
July, the same as June, in Alton, Florida, is another hot summer month, with an average temperature ranging between max 91.2°F (32.9°C) and min 74.3°F (23.5°C). In Alton, July and August are characterised by the peak of temperatures, recording an average high of 91.2°F (32.9°C). The heat index value for July is calculated to be a life-threatening hot 114.8°F (46°C). Weather in July »
Weather in August
August, the last month of the summer in Alton, is also a hot month, with an average temperature fluctuating between 91.2°F (32.9°C) and 74.8°F (23.8°C). Alton experiences the peak of its temperatures in July and August, when the average high-temperatures rise to 91.2°F (32.9°C). During August, the heat index is calculated to be a blazing hot 114.8°F (46°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a tropical month in Alton, Florida, with temperature in the range of an average low of 70.7°F (21.5°C) and an average high of 87.8°F (31°C). Upon the beginning of September, Alton's high-temperatures register at a still hot 87.8°F (31°C), closely mirroring the preceding month. Weather in September »
Weather in October
October, like September, in Alton, Florida, is a moderately hot autumn month, with an average temperature fluctuating between 62.1°F (16.7°C) and 81°F (27.2°C). Alton in October undergoes a slight reduction in the average high-temperature, shifting from September's hot 87.8°F (31°C) to a warm 81°F (27.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Alton, is another pleasant month, with an average temperature fluctuating between 52.2°F (11.2°C) and 71.2°F (21.8°C). In Alton, entering November brings a temperature decrement, reducing from October's warm 81°F (27.2°C) to an agreeable 71.2°F (21.8°C). Weather in November »
Weather in December
December, the first month of the winter in Alton, is still a comfortable month, with an average temperature varying between 65.8°F (18.8°C) and 48.7°F (9.3°C). The start of December comes with a small reduction in the average high-temperature, subtly receding from an agreeable 71.2°F (21.8°C) in November to a comfortable 65.8°F (18.8°C). Weather in December »
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
January, recording an average high temperature of 62.2°F (16.8°C) and a low temperature of 44.2°F (6.8°C), is Alton's coldest month.
How much does it rain?
In Alton, during the entire year, the rain falls for 173.6 days and collects up to 31.3" (795mm) of precipitation.
When it does not snow?
January, March through December are months without snowfall.
How many days does it snow?
Throughout the year, there are 0.1 snowfall days.
When is the lowest UV index?
January is the month with the lowest UV index, with an average maximum UV index of 3.
When does it snow?
The only month with snowfall is February.
What is the snowiest month?
The month with the most snowfall days is February, when snow falls for 0.1 days.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
What is the least humid month?
With an average relative humidity of 70%, May is the least humid month.
What are the months with the highest UV index?
May through August, with an average maximum UV index of 7, are months with the highest UV index.
When are the longest days?
With an average of 14h and 6min of daylight, June has the longest days of the year.
What time of the year is the hottest?
Alton's temperature peaks during July and August, with an average high-temperature of 91.2°F (32.9°C).
What month has the most sunshine?
The month with the most sunshine is July, with an average of 10.7h of sunshine.
What are the most humid months?
The months with the highest humidity are August, September and December, with an average relative humidity of 77%.
What is the rainiest month?
The month with the most rainfall is August, when the rain falls for 25.5 days and typically aggregates up to 4.57" (116mm) of precipitation.
What is the driest month?
November is the month with the least rainfall in Alton. Rain falls for 7.2 days and accumulates 1.14" (29mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 10h and 12min of daylight.
What is the month with the least sunshine?
The month with the least sunshine is December, with an average of 5.8h of sunshine.
Average temperature
Alton, FL
The warmest months (with the highest average high temperature) are July and August (91.2°F).
The month with the lowest average high temperature is January (62.2°F).
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure
Alton, FL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.1"Hg - Average pressure in April:
30.02"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed
Alton, FL
- Average wind speed in January:
6mph - Average wind speed in February:
6.2mph - Average wind speed in March:
6.5mph - Average wind speed in April:
6.5mph - Average wind speed in May:
5.7mph - Average wind speed in June:
5.2mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5mph - Average wind speed in October:
5.7mph - Average wind speed in November:
5.7mph - Average wind speed in December:
5.9mph
The windiest months (with the highest average wind speed) are March and April (6.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity
Alton, FL
The months with the highest relative humidity are August, September and December (77%).
The month with the lowest relative humidity is May (70%).
Average rainfall
Alton, FL
- Average rainfall in January:
1.57" - Average rainfall in February:
1.57" - Average rainfall in March:
1.89" - Average rainfall in April:
2.4" - Average rainfall in May:
2.4" - Average rainfall in June:
4.53"
- Average rainfall in July:
4.33" - Average rainfall in August:
4.57" - Average rainfall in September:
3.03" - Average rainfall in October:
1.65" - Average rainfall in November:
1.14" - Average rainfall in December:
2.2"
The wettest month (with the highest rainfall) is August (4.57").
The driest month (with the least rainfall) is November (1.14").
Average rainfall days
Alton, FL
- Average rainfall days in January:
8.8 days - Average rainfall days in February:
9.9 days - Average rainfall days in March:
11.4 days - Average rainfall days in April:
12.6 days - Average rainfall days in May:
13.6 days - Average rainfall days in June:
22.1 days
- Average rainfall days in July:
23.2 days - Average rainfall days in August:
25.5 days - Average rainfall days in September:
19.5 days - Average rainfall days in October:
9.9 days - Average rainfall days in November:
7.2 days - Average rainfall days in December:
9.9 days
The month with the highest number of rainy days is August (25.5 days).
The month with the least rainy days is November (7.2 days).
Average snowfall days
Alton, FL
- Average snowfall days in January:
0 days - Average snowfall days in February:
0.1 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
Alton, FL
- Average daylight in January:
10h and 3min - Average daylight in February:
11h and 1min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 5min - Average daylight in May:
13h and 4min - Average daylight in June:
14h and 1min
- Average daylight in July:
13h and 5min - Average daylight in August:
13h and 1min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 4min - Average daylight in December:
10h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in January:
6h and 3min - Average sunshine in February:
7h and 4min - Average sunshine in March:
8h and 1min - Average sunshine in April:
9h and 0min - Average sunshine in May:
10h and 4min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
9h and 3min - Average sunshine in September:
8h and 3min - Average sunshine in October:
7h and 2min - Average sunshine in November:
6h and 2min - Average sunshine in December:
5h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days
Alton, FL
- Average sunshine days in January:
20.3 days - Average sunshine days in February:
16.6 days - Average sunshine days in March:
18.3 days - Average sunshine days in April:
16.2 days - Average sunshine days in May:
16.3 days - Average sunshine days in June:
6 days
- Average sunshine days in July:
5.9 days - Average sunshine days in August:
4.3 days - Average sunshine days in September:
8.9 days - Average sunshine days in October:
19.7 days - Average sunshine days in November:
21.5 days - Average sunshine days in December:
20 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is August (4.3 days).
Average UV index
Alton, FL
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover
Alton, FL
The month with the most cloud cover is December (Cloud cover 40).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility
Alton, FL
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (6mi).
The month with the lowest visibility is September (5mi).
Alton, Florida, USA
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