Climate and monthly weather forecast
Upper Lehigh, PA

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Weather in January

January, the same as December, in Upper Lehigh, Pennsylvania, is another subzero cold winter month, with temperature in the range of an average low of 18.5°F (-7.5°C) and an average high of 30.6°F (-0.8°C). Upper Lehigh's January weather, with an average high temperature of 30.6°F (-0.8°C) and an average low temperature of 18.5°F (-7.5°C), tends to be the coldest of the year. Weather in January »

Weather in February

The last month of the winter, February, is a wintry month in Upper Lehigh, Pennsylvania, with temperature in the range of an average high of 34.3°F (1.3°C) and an average low of 20.3°F (-6.5°C). Upper Lehigh's shift into February is marked by a subtle change to an icy 34.3°F (1.3°C) from January's 30.6°F (-0.8°C) in temperature. Weather in February »

Weather in March

March, the first month of the spring in Upper Lehigh, is a frosty month, with an average temperature ranging between max 43°F (6.1°C) and min 27.3°F (-2.6°C). Observing a minor shift, the average high-temperature during March adjusts from February's cold 34.3°F (1.3°C) to a chilly 43°F (6.1°C). Weather in March »

Weather in April

April in Upper Lehigh, Pennsylvania, is a cool spring month, with an average temperature fluctuating between 55°F (12.8°C) and 37.9°F (3.3°C). The arrival of April brings an increase in high-temperatures, moving from a frosty 43°F (6.1°C) in March to a fresh 55°F (12.8°C). Weather in April »

Weather in May

May, the last month of the spring in Upper Lehigh, is an enjoyable month, with an average temperature varying between 48.4°F (9.1°C) and 66.7°F (19.3°C). Upper Lehigh's May weather brings a rise in high-temperatures, moving from a cool 55°F (12.8°C) in April to an enjoyable 66.7°F (19.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Upper Lehigh, Pennsylvania, with an average temperature fluctuating between 55.2°F (12.9°C) and 74.7°F (23.7°C). The shift from May to June sees a slight increase in the average high-temperature, transitioning from a comfortable 66.7°F (19.3°C) to a warm 74.7°F (23.7°C). Weather in June »

Weather in July

July, like June, in Upper Lehigh, Pennsylvania, is a moderately hot summer month, with an average temperature varying between 60.3°F (15.7°C) and 80.2°F (26.8°C). Upper Lehigh registers the highest average temperatures during the month of July, with peaks of 80.2°F (26.8°C) and lows of 60.3°F (15.7°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Upper Lehigh, Pennsylvania, with an average temperature fluctuating between 58.5°F (14.7°C) and 77.9°F (25.5°C). August ushers in an average high-temperature of a still moderately hot 77.9°F (25.5°C), aligning closely with the preceding month. Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Upper Lehigh, Pennsylvania, with an average temperature fluctuating between 52°F (11.1°C) and 71.4°F (21.9°C). Upper Lehigh's weather subtly changes with the onset of September, barely falling from a moderately hot 77.9°F (25.5°C) in August to a pleasant 71.4°F (21.9°C). Weather in September »

Weather in October

October, the same as September, in Upper Lehigh, Pennsylvania, is a moderate autumn month, with an average temperature varying between 58.3°F (14.6°C) and 43.5°F (6.4°C). Onset of October comes with a temperature decline, the average high falling from an agreeable 71.4°F (21.9°C) in September to a mild 58.3°F (14.6°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Upper Lehigh, Pennsylvania, with an average temperature fluctuating between 45.9°F (7.7°C) and 32.5°F (0.3°C). The shift from October to November involves a decrease in the average high-temperature, from a mild 58.3°F (14.6°C) to a frosty 45.9°F (7.7°C). Weather in November »

Weather in December

December, the first month of the winter in Upper Lehigh, is also an icy month, with an average temperature ranging between max 36.5°F (2.5°C) and min 25.5°F (-3.6°C). With the onset of December, Upper Lehigh experiences a modest temperature adjustment, with the average high-temperature receding from a frosty 45.9°F (7.7°C) in November to a cold 36.5°F (2.5°C). Weather in December »

Frequently asked questions

What is the coldest month?

In Upper Lehigh, January is the coldest month, with temperatures averaging a high of 30.6°F (-0.8°C) and a low of 18.5°F (-7.5°C).

How many days does it rain?

Throughout the year, there are 163.6 rainfall days, and 35" (889mm) of precipitation is accumulated.

When does it snow?

Months with snowfall are January through May, October through December.

How much does it snow?

In Upper Lehigh, during the entire year, snow falls for 60.9 days and aggregates up to 38.9" (988mm) of snow.

What are the most humid months?

February and December, with an average relative humidity of 84%, are most humid months.

When does it snow the most?

February is the month with the most snowfall. Snow falls for 14.1 days and accumulates 8.62" (219mm) of snow.

What is the month with the least sunshine?

With an average of 3.6h of sunshine, February has the least sunshine of the year.

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 78%, April is the least humid month.

What is the wettest month?

May is the month with the most rainfall. Rain falls for 19.4 days and accumulates 3.5" (89mm) of precipitation.

When is the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 5.

When it does not snow?

June through September are months without snowfall.

When are the longest days?

With an average of 15h and 6min of daylight, June has the longest days of the year.

What part of the year is the hottest?

The warmest period tends to be July, when average temperatures fluctuate between a high of 80.2°F (26.8°C) and a low of 60.3°F (15.7°C).

What month has the most sunshine?

The month with the most sunshine is July, with an average of 9.8h of sunshine.

What is the driest month?

September is the month with the least rainfall. Rain falls for 13.8 days and accumulates 2.13" (54mm) of precipitation.

What is the month with the shortest days?

With an average of 9h and 18min of daylight, December has the shortest days of the year.

What is the month with the lowest UV index?

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

Average temperature
Upper Lehigh, PA

Average temperature - Upper Lehigh, PA

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30.6°F).

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

Average pressure
Upper Lehigh, PA

Average pressure - Upper Lehigh, PA

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed
Upper Lehigh, PA

Average wind speed - Upper Lehigh, PA

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity
Upper Lehigh, PA

Average humidity - Upper Lehigh, PA

The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is April (78%).

Average rainfall
Upper Lehigh, PA

Average rainfall - Upper Lehigh, PA

The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (2.13").

Average rainfall days
Upper Lehigh, PA

Average rainfall days - Upper Lehigh, PA

The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is January (7 days).

Average snowfall
Upper Lehigh, PA

Average snowfall - Upper Lehigh, PA

The month with the highest snowfall is February (8.62").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Upper Lehigh, PA

Average snowfall days - Upper Lehigh, PA

The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Upper Lehigh, PA

Average daylight / Average sunshine - Upper Lehigh, PA

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).

Average sunshine days
Upper Lehigh, PA

Average sunshine days - Upper Lehigh, PA

The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is May (9.2 days).

Average UV index
Upper Lehigh, PA

Average UV index - Upper Lehigh, PA

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

Average visibility
Upper Lehigh, PA

Average visibility - Upper Lehigh, PA

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

Upper Lehigh, Pennsylvania, USA

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