Monthly weather forecast and climate
Alton, FL

Weather in January

January, like December, in Alton, Florida, is another comfortable winter month, with average temperature fluctuating between 62.2°F (16.8°C) and 44.2°F (6.8°C). The coldest month is January, with an average high-temperature of 62.2°F (16.8°C) and an average low-temperature of 44.2°F (6.8°C). Weather in January »

Weather in February

The last month of the winter, February, is another comfortable month in Alton, Florida, with average temperature varying between 48.4°F (9.1°C) and 67.1°F (19.5°C). In Alton, the average high-temperature is almost the same as in January - a still comfortable 67.1°F (19.5°C). Weather in February »

Weather in March

The first month of the spring, March, is a pleasant month in Alton, Florida, with average temperature ranging between min 52.7°F (11.5°C) and max 73°F (22.8°C). In Alton, the average high-temperature slightly increases, from a comfortable 67.1°F (19.5°C) in February, to a pleasant 73°F (22.8°C). Weather in March »

Weather in April

April is a warm spring month in Alton, Florida, with average temperature varying between 80.2°F (26.8°C) and 59.7°F (15.4°C). In Alton, the average high-temperature marginally rises, from a pleasant 73°F (22.8°C) in March, to a moderately hot 80.2°F (26.8°C). Weather in April »

Weather in May

The last month of the spring, May, is a tropical month in Alton, Florida, with average temperature varying between 65.8°F (18.8°C) and 86.4°F (30.2°C). In Alton, Florida, the average high-temperature slightly increases, from a moderately hot 80.2°F (26.8°C) in April, to a hot 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 average temperature varying between 90.3°F (32.4°C) and 72.3°F (22.4°C). In June, the average high-temperature is essentially the same as in May - a still hot 90.3°F (32.4°C). Weather in June »

Weather in July

July, like June, is another tropical summer month in Alton, Florida, with average temperature ranging between max 91.2°F (32.9°C) and min 74.3°F (23.5°C). July and August, with an average high-temperature of 91.2°F (32.9°C), are the warmest months. The average heat index is evaluated at a blazing hot 114.4°F (45.8°C). Weather in July »

Weather in August

The last month of the summer, August, is another hot month in Alton, Florida, with average temperature varying between 91.2°F (32.9°C) and 74.8°F (23.8°C). July and August, with an average high-temperature of 91.2°F (32.9°C), are the warmest months. In August, the average heat index is evaluated at a life-threatening hot 115.3°F (46.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a hot 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). In September, the average high-temperature is relatively the same as in August - a still tropical 87.8°F (31°C). Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Alton, Florida, with temperature in the range of an average low of 62.1°F (16.7°C) and an average high of 81°F (27.2°C). In October, the average high-temperature slightly decreases, from a hot 87.8°F (31°C) in September, to a moderately hot 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 average temperature ranging between max 71.2°F (21.8°C) and min 52.2°F (11.2°C). In November, the average high-temperature decreases, from a warm 81°F (27.2°C) in October, to a pleasant 71.2°F (21.8°C). Weather in November »

Weather in December

The first month of the winter, December, is still a comfortable month in Alton, Florida, with temperature in the range of an average low of 48.7°F (9.3°C) and an average high of 65.8°F (18.8°C). In December, the average high-temperature marginally drops, from an agreeable 71.2°F (21.8°C) in November, to a comfortable 65.8°F (18.8°C). Weather in December »
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FAQ

What is the coldest month in Alton?

January is the coldest month in Alton, with an average high-temperature of 62.2°F (16.8°C) and an average low-temperature of 44.2°F (6.8°C).

How many days does it rain in Alton?

Throughout the year, in Alton, Florida, there are 173.6 rainfall days, and 31.3" (795mm) of precipitation is accumulated.

How many days does it snow in Alton?

In Alton, during the entire year, snow falls for 0.1 days.

When it does not snow in Alton?

January, March through December are months without snowfall in Alton.

When is the lowest UV index in Alton?

The month with the lowest UV index is January, with an average maximum UV index of 3.

When does it snow in Alton?

February is the only month when snow falls in Alton, Florida.

When does it snow the most in Alton?

February has the most snowfall days of the year. Snow falls for 0.1 days.

What is the least humid month in Alton?

May is the least humid month in Alton, Florida, with an average relative humidity of 70%.

What are the months with the highest UV index in Alton?

May through August, with an average maximum UV index of 7, are months with the highest UV index.

When are the longest days in Alton?

With an average of 14.1h of daylight, June has the longest days of the year in Alton.

What is the warmest month in Alton?

July and August, with an average high-temperature of 91.2°F (32.9°C), are warmest months in Alton, Florida.

What month has the most sunshine in Alton?

The month with the most sunshine in Alton, Florida, is July, with an average of 10.7h of sunshine.

What are the most humid months in Alton?

August, September and December, with an average relative humidity of 77%, are most humid months.

What is the wettest month in Alton?

August is the month with the most rainfall in Alton. Rain falls for 25.5 days and accumulates 4.57" (116mm) of precipitation.

What is the driest month in Alton?

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 in Alton?

December has the shortest days of the year in Alton, with an average of 10.2h of daylight.

What is the month with the least sunshine in Alton?

With an average of 5.8h of sunshine, December has the least sunshine of the year in Alton, Florida.

Average temperature
Alton, FL

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).

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Average pressure
Alton, FL

Average pressure - Alton, FL

The month with the highest atmospheric pressure is January (30.15").
Months with the lowest atmospheric pressure are June, August and September (29.98").

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Average wind speed
Alton, FL

Average wind speed - Alton, FL

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).

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Average humidity
Alton, FL

Average humidity - Alton, FL

Months with the highest relative humidity are August, September and December (77%).
The month with the lowest relative humidity is May (70%).

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Average rainfall
Alton, FL

Average rainfall - Alton, FL

The wettest month (with the highest rainfall) is August (4.57").
The driest month (with the least rainfall) is November (1.14").

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Average rainfall days
Alton, FL

Average rainfall days - Alton, FL

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).

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Average snowfall days
Alton, FL

Average snowfall days - Alton, FL

The month with the highest number of snowfall days is February (0.1 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight / Average sunshine
Alton, FL

Average daylight / Average sunshine - Alton, FL

The month with the longest days is June (Average daylight: 14.1h).
The month with the shortest days is December (Average daylight: 10.2h).

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days
Alton, FL

Average sunshine days - Alton, FL

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is August (4.3 days).

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Average visibility
Alton, FL

Average visibility - Alton, FL

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).

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