Climate and monthly weather forecast
Smithfield, PA

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Weather in January

January, the same as December, is an icy winter month in Smithfield, Pennsylvania, with temperature in the range of an average low of 21.2°F (-6°C) and an average high of 34.3°F (1.3°C). Smithfield's coldest month, January, registers temperatures that range from a high of 34.3°F (1.3°C) to a low of 21.2°F (-6°C). Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Smithfield, Pennsylvania, with an average temperature ranging between max 38.8°F (3.8°C) and min 24.4°F (-4.2°C). The arrival of February denotes a barely perceptible change in the average high-temperatures to a still wintry 38.8°F (3.8°C) from January's 34.3°F (1.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Smithfield, Pennsylvania, with an average temperature ranging between max 48.4°F (9.1°C) and min 31.5°F (-0.3°C). The start of March brings a shift in the average high-temperature, increasing from February's icy 38.8°F (3.8°C) to a frosty 48.4°F (9.1°C). Weather in March »

Weather in April

April in Smithfield, Pennsylvania, is a moderate spring month, with an average temperature ranging between max 60.4°F (15.8°C) and min 41.2°F (5.1°C). Smithfield's transition into April brings a rise in the average high-temperature, moving from a chilly 48.4°F (9.1°C) in March to a refreshing 60.4°F (15.8°C). Weather in April »

Weather in May

The last month of the spring, May, is an agreeable month in Smithfield, Pennsylvania, with temperature in the range of an average high of 71.8°F (22.1°C) and an average low of 51.1°F (10.6°C). Smithfield sees an increase in average high-temperatures during May, moving from a moderate 60.4°F (15.8°C) in April to a pleasant 71.8°F (22.1°C). Weather in May »

Weather in June

June, the first month of the summer in Smithfield, is a warm month, with an average temperature ranging between min 57.4°F (14.1°C) and max 78.3°F (25.7°C). The start of June brings a subtle shift in the average high-temperature, edging up from May's pleasant 71.8°F (22.1°C) to a moderately hot 78.3°F (25.7°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Smithfield, Pennsylvania, with an average temperature fluctuating between 82.8°F (28.2°C) and 61°F (16.1°C). The warmest time of the year is July, with temperatures averaging a high of 82.8°F (28.2°C) and a low of 61°F (16.1°C). For July, the heat index is calculated to be a hot 89.6°F (32°C). Weather in July »

Weather in August

August, the last month of the summer in Smithfield, is also a moderately hot month, with an average temperature ranging between min 59°F (15°C) and max 81.5°F (27.5°C). An average high-temperature of a still moderately hot 81.5°F (27.5°C) marks August, exhibiting a close resemblance to the conditions in July. Weather in August »

Weather in September

September, the first month of the autumn in Smithfield, is also a moderately hot month, with an average temperature varying between 75.6°F (24.2°C) and 54.5°F (12.5°C). As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a moderately hot 81.5°F (27.5°C) to a still warm 75.6°F (24.2°C). Weather in September »

Weather in October

October, like September, in Smithfield, Pennsylvania, is another enjoyable autumn month, with temperature in the range of an average low of 44.8°F (7.1°C) and an average high of 62.2°F (16.8°C). During Smithfield's transition into October, the average high-temperature lessens, moving from a moderately hot 75.6°F (24.2°C) in September to an enjoyable 62.2°F (16.8°C). Weather in October »

Weather in November

November, the last month of the autumn in Smithfield, is another chilly month, with temperature in the range of an average low of 34°F (1.1°C) and an average high of 49.8°F (9.9°C). With November's arrival, Smithfield sees a decrease in average high-temperatures, moving from a refreshing 62.2°F (16.8°C) in October to a chilly 49.8°F (9.9°C). Weather in November »

Weather in December

The first month of the winter, December, is also an icy month in Smithfield, Pennsylvania, with an average temperature varying between 29.1°F (-1.6°C) and 40.1°F (4.5°C). Onset of December witnesses a reduction in the average high-temperature, falling from a frosty 49.8°F (9.9°C) in November to a cold 40.1°F (4.5°C). Weather in December »

Frequently asked questions

What part of the year is the coldest?

Smithfield witnesses the coldest weather in January, with temperatures averaging a high of 34.3°F (1.3°C) and a low of 21.2°F (-6°C).

How much does it rain in Smithfield?

Throughout the year, there are 143.4 rainfall days, and 13.19" (335mm) of precipitation is accumulated.

When does it snow?

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

What is the snowiest month?

The month with the most snowfall is January, when snow falls for 16.3 days and typically aggregates up to 2.83" (72mm) of snow.

How many days does it snow?

Throughout the year, there are 56 snowfall days, and 11.54" (293mm) of snow is accumulated.

What is the month with the least sunshine?

With an average of 3.1h of sunshine, January has the least sunshine of the year.

What is the most humid month?

With an average relative humidity of 85%, February is the most humid month.

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 wettest month?

The month with the most rainfall is May, when the rain falls for 17 days and typically aggregates up to 1.57" (40mm) of precipitation.

When it does not snow?

In Smithfield, Pennsylvania, snow does not fall in June through September.

When are the longest days in Smithfield?

With an average of 14h and 54min of daylight, June has the longest days of the year.

What are the months with the highest UV index?

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

What time of the year is the hottest?

The highest temperatures are recorded in July, with averages reaching a high of 82.8°F (28.2°C) and a low of 61°F (16.1°C).

What is the least humid month?

The months with the lowest humidity are July and August, with an average relative humidity of 77%.

What month has the most sunshine?

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

What is the driest month?

The month with the least rainfall is September, when the rain falls for 10.2 days and typically collects 0.67" (17mm) of precipitation.

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.

What is the month with the lowest UV index?

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

Average temperature
Smithfield, PA

Average temperature - Smithfield, PA

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (34.3°F).

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

Average pressure
Smithfield, PA

Average pressure - Smithfield, PA

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed
Smithfield, PA

Average wind speed - Smithfield, PA

The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

Average humidity
Smithfield, PA

Average humidity - Smithfield, PA

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (77%).

Average rainfall
Smithfield, PA

Average rainfall - Smithfield, PA

The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is September (0.67").

Average rainfall days
Smithfield, PA

Average rainfall days - Smithfield, PA

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (8.2 days).

Average snowfall
Smithfield, PA

Average snowfall - Smithfield, PA

The month with the highest snowfall is January (2.83").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Smithfield, PA

Average snowfall days - Smithfield, PA

The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Smithfield, PA

Average daylight / Average sunshine - Smithfield, PA

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

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

Average sunshine days
Smithfield, PA

Average sunshine days - Smithfield, PA

The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is January (9.1 days).

Average visibility
Smithfield, PA

Average visibility - Smithfield, PA

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

Smithfield, Pennsylvania, USA

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