Climate and monthly weather forecast
Mount Summit, IN

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Weather in January

January, the same as December, is an icy winter month in Mount Summit, Indiana, with an average temperature ranging between max 32.2°F (0.1°C) and min 20.5°F (-6.4°C). Mount Summit experiences its lowest temperatures in January, with an average peak of 32.2°F (0.1°C) and a low of 20.5°F (-6.4°C). Weather in January »

Weather in February

February, the last month of the winter in Mount Summit, is also an icy month, with an average temperature ranging between min 24.1°F (-4.4°C) and max 36.9°F (2.7°C). As February takes hold, the average high-temperature is a still wintry 36.9°F (2.7°C), nearly mirroring that of the previous month. Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Mount Summit, Indiana, with an average temperature fluctuating between 48.6°F (9.2°C) and 33.6°F (0.9°C). As Mount Summit enters March, the average high-temperature increases from the an icy 36.9°F (2.7°C) of February to a frosty 48.6°F (9.2°C). Weather in March »

Weather in April

April is a moderate spring month in Mount Summit, Indiana, with an average temperature fluctuating between 44.1°F (6.7°C) and 60.4°F (15.8°C). As Mount Summit transitions into April, the average high-temperature is observed to rise from a frosty 48.6°F (9.2°C) in March to a refreshing 60.4°F (15.8°C). Weather in April »

Weather in May

May, the last month of the spring in Mount Summit, is an agreeable month, with temperature in the range of an average low of 54.7°F (12.6°C) and an average high of 71.2°F (21.8°C). Mount Summit sees an increase in the average high-temperature with the arrival of May, moving from April's mild 60.4°F (15.8°C) to an agreeable 71.2°F (21.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Mount Summit, Indiana, with an average temperature fluctuating between 62.2°F (16.8°C) and 78.1°F (25.6°C). As June sets, the average high-temperature shows a slight increase, moving up from an agreeable 71.2°F (21.8°C) in May to a warm 78.1°F (25.6°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Mount Summit, Indiana, with an average temperature fluctuating between 81°F (27.2°C) and 64.4°F (18°C). In Mount Summit, the month of July is known for its highest average temperatures, reaching a high of 81°F (27.2°C) and a low of 64.4°F (18°C). For July, the heat index is estimated at a tropical 86°F (30°C). Weather in July »

Weather in August

August, the last month of the summer in Mount Summit, is also a moderately hot month, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 79.3°F (26.3°C). The commencement of August introduces an average high-temperature of a still moderately hot 79.3°F (26.3°C), closely mirroring the preceding month. Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Mount Summit, Indiana, with temperature in the range of an average low of 56.8°F (13.8°C) and an average high of 74.3°F (23.5°C). Mount Summit indicates an average high-temperature of a still moderately hot 74.3°F (23.5°C) in September, showing minor variation from August's 79.3°F (26.3°C). Weather in September »

Weather in October

October, like September, in Mount Summit, Indiana, is another comfortable autumn month, with temperature in the range of an average high of 62.1°F (16.7°C) and an average low of 46.6°F (8.1°C). October's arrival correlates with a reduction in the average high-temperature, down from a moderately hot 74.3°F (23.5°C) in September to a refreshing 62.1°F (16.7°C). Weather in October »

Weather in November

November, the last month of the autumn in Mount Summit, is also a frosty month, with temperature in the range of an average high of 48.6°F (9.2°C) and an average low of 34.9°F (1.6°C). Transition from October to November is accompanied by a temperature drop, with average high-temperatures decreasing from an enjoyable 62.1°F (16.7°C) to a chilly 48.6°F (9.2°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Mount Summit, Indiana, with an average temperature fluctuating between 37.9°F (3.3°C) and 27.9°F (-2.3°C). With the beginning of December, the average high-temperature shows a decrease, transitioning from a chilly 48.6°F (9.2°C) in November to a cold 37.9°F (3.3°C). Weather in December »
Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

The month of January sees the average lowest temperatures, reaching 32.2°F (0.1°C) at the peak and 20.5°F (-6.4°C) at the low.

What are the most humid months in Mount Summit?

The months with the highest humidity in Mount Summit are January and December, with an average relative humidity of 83%.

How much does it rain?

In Mount Summit, during the entire year, the rain falls for 169.4 days and collects up to 31.77" (807mm) of precipitation.

When does it snow?

January through April, October through December are months with snowfall.

When does it snow the most?

The month with the most snowfall is January, when snow falls for 12.8 days and typically aggregates up to 3.31" (84mm) of snow.

How much does it snow?

In Mount Summit, during the entire year, snow falls for 42.7 days and aggregates up to 13.82" (351mm) of snow.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3.6h of sunshine.

What is the driest month?

February is the month with the least rainfall in Mount Summit. Rain falls for 8.8 days and accumulates 1.85" (47mm) of precipitation.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Mount Summit, 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 wettest month?

May is the month with the most rainfall. Rain falls for 19.7 days and accumulates 3.9" (99mm) of precipitation.

When it does not snow in Mount Summit?

May through September are months without snowfall.

What is the month with the highest UV index?

The months with the highest UV index are May through July, with an average maximum UV index of 6.

When are the longest days?

The month with the longest days is June, with an average of 15h and 0min of daylight.

What month has the most sunshine?

The month with the most sunshine is June, with an average of 10.1h of sunshine.

What time of the year is the hottest?

Mount Summit's warmest temperatures are experienced in July, with average high temperatures of 81°F (27.2°C) and lows of 64.4°F (18°C).

What is the least humid month?

With an average relative humidity of 74%, October is the least humid month.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 24min of daylight.

When is the lowest UV index in Mount Summit?

The month with the lowest UV index in Mount Summit is December, with an average maximum UV index of 1.

Average temperature
Mount Summit, IN

Average temperature - Mount Summit, IN

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (32.2°F).

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure
Mount Summit, IN

Average pressure - Mount Summit, IN

The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed
Mount Summit, IN

Average wind speed - Mount Summit, IN

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

Average humidity
Mount Summit, IN

Average humidity - Mount Summit, IN

The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (74%).

Average rainfall
Mount Summit, IN

Average rainfall - Mount Summit, IN

The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is February (1.85").

Average rainfall days
Mount Summit, IN

Average rainfall days - Mount Summit, IN

The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is February (8.8 days).

Average snowfall
Mount Summit, IN

Average snowfall - Mount Summit, IN

The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days
Mount Summit, IN

Average snowfall days - Mount Summit, IN

The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Mount Summit, IN

Average daylight / Average sunshine - Mount Summit, IN

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days
Mount Summit, IN

Average sunshine days - Mount Summit, IN

The months with the most sunshine days are October and November (16.1 days).
The month with the least sunshine days is May (9.1 days).

Average visibility
Mount Summit, IN

Average visibility - Mount Summit, IN

The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).

Mount Summit, Indiana, USA

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