Compare the Climate and Weather in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional Airport

This page lets you compare and contrast the weather and climate in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional Airport year round.

You can drill down to a specific season, month, and even day by clicking the graphs or using the navigation panel.

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Average High and Low Temperature

Compare the Average High and Low Temperature in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F68258639178935NowNowNorth Philadelphia AirportNorth Philadelphia AirportSouth Jersey Regional AirportSouth Jersey Regional AirportMcGuire Air Force BaseMcGuire Air Force BaseTrenton Mercer AirportTrenton Mercer AirportTrentonTrenton
The daily average high and low air temperature at 2 meters above the ground. The thin dotted lines are the corresponding perceived temperatures.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Trenton 40°F43°F52°F63°F73°F81°F85°F83°F76°F65°F55°F45°F
Trenton Mercer Airport 40°F42°F52°F63°F72°F81°F85°F83°F76°F65°F54°F44°F
McGuire Air Force Base 41°F43°F52°F63°F73°F81°F86°F84°F77°F66°F56°F46°F
North Philadelphia Airport 41°F44°F53°F64°F73°F82°F86°F84°F77°F66°F55°F45°F
South Jersey Regional Airport 41°F44°F53°F64°F73°F82°F86°F84°F77°F66°F55°F46°F
LowJanFebMarAprMayJunJulAugSepOctNovDec
Trenton 26°F28°F35°F44°F54°F63°F68°F66°F59°F48°F39°F31°F
Trenton Mercer Airport 25°F27°F34°F44°F53°F62°F67°F65°F58°F47°F38°F30°F
McGuire Air Force Base 26°F27°F34°F43°F53°F62°F67°F66°F58°F48°F39°F31°F
North Philadelphia Airport 27°F28°F35°F45°F54°F63°F69°F67°F59°F48°F39°F31°F
South Jersey Regional Airport 26°F28°F35°F44°F53°F62°F67°F65°F58°F48°F39°F31°F

Trenton

Average Hourly Temperature in TrentonJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldvery coldcoldcoolcoolcomfortablewarmfreezing

Trenton Mercer Airport

Average Hourly Temperature in Trenton Mercer AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldvery coldcoldcoolcoolcomfortablewarmfreezingfreezing

McGuire Air Force Base

Average Hourly Temperature in McGuire Air Force BaseJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldvery coldcoldcoolcoolcomfortablewarmfreezing

North Philadelphia Airport

Average Hourly Temperature in North Philadelphia AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldvery coldcoldcoolcoolcomfortablewarmhotfreezing

South Jersey Regional Airport

Average Hourly Temperature in South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldvery coldcoldcoolcoolcomfortablewarmfreezing
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chance of Clearer Skies

Compare the Chance of Clearer Skies in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%644764NowNowNorth Philadelphia AirportNorth Philadelphia AirportSouth Jersey Regional AirportSouth Jersey Regional AirportMcGuire Air Force BaseMcGuire Air Force BaseTrenton Mercer AirportTrenton Mercer AirportTrentonTrenton
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer SkiesJanFebMarAprMayJunJulAugSepOctNovDec
Trenton 47%48%50%51%51%54%60%63%63%62%55%49%
Trenton Mercer Airport 47%48%49%50%51%53%60%63%63%62%55%48%
McGuire Air Force Base 48%48%50%51%51%53%59%62%63%62%55%49%
North Philadelphia Airport 47%48%49%51%51%53%59%63%63%62%55%48%
South Jersey Regional Airport 48%48%50%51%51%53%59%62%63%62%55%49%

Daily Chance of Precipitation

Compare the Daily Chance of Precipitation in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%372137NowNowNorth Philadelphia AirportNorth Philadelphia AirportSouth Jersey Regional AirportSouth Jersey Regional AirportMcGuire Air Force BaseMcGuire Air Force BaseTrenton Mercer AirportTrenton Mercer AirportTrentonTrenton
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Trenton 7.0d6.9d8.4d8.6d9.7d10.1d11.0d9.8d8.0d7.5d7.6d7.9d
Trenton Mercer Airport 7.0d6.9d8.3d8.6d10.0d10.5d11.2d9.9d8.0d7.5d7.5d7.9d
McGuire Air Force Base 7.1d7.0d8.3d8.5d9.5d10.0d10.9d9.9d8.0d7.3d7.6d8.1d
North Philadelphia Airport 7.1d7.0d8.5d8.8d10.2d10.6d11.2d9.9d8.2d7.4d7.6d7.9d
South Jersey Regional Airport 7.2d7.0d8.4d8.7d9.8d10.2d11.0d9.9d8.1d7.3d7.7d8.0d

Average Monthly Rainfall

Compare the Average Monthly Rainfall in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in3.82.1NowNowNorth Philadelphia AirportNorth Philadelphia AirportSouth Jersey Regional AirportSouth Jersey Regional AirportMcGuire Air Force BaseMcGuire Air Force BaseTrenton Mercer AirportTrenton Mercer AirportTrentonTrenton
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
RainfallJanFebMarAprMayJunJulAugSepOctNovDec
Trenton 2.3″2.2″3.2″3.6″3.4″3.4″3.7″3.6″3.5″3.4″3.3″3.1″
Trenton Mercer Airport 2.2″2.1″3.1″3.6″3.4″3.5″3.7″3.6″3.6″3.4″3.3″3.1″
McGuire Air Force Base 2.3″2.2″3.3″3.6″3.2″3.3″3.6″3.6″3.3″3.3″3.3″3.1″
North Philadelphia Airport 2.2″2.2″3.2″3.6″3.4″3.5″3.7″3.6″3.6″3.4″3.3″3.1″
South Jersey Regional Airport 2.3″2.3″3.3″3.6″3.3″3.4″3.6″3.6″3.4″3.3″3.3″3.1″

Average Monthly Snowfall

Compare the Average Monthly Snowfall in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 in8 in8 in6.57.2NowNowNorth Philadelphia AirportNorth Philadelphia AirportSouth Jersey Regional AirportSouth Jersey Regional AirportMcGuire Air Force BaseMcGuire Air Force BaseTrentonTrenton
The average snowfall accumulated over the course of a sliding 31-day period centered on the day in question.
SnowfallJanFebMarAprMayJunJulAugSepOctNovDec
Trenton 6.0″6.0″2.8″0.1″0.0″0.0″0.0″0.0″0.0″0.0″0.6″3.3″
Trenton Mercer Airport 6.8″6.8″3.6″0.3″0.0″0.0″0.0″0.0″0.0″0.0″0.9″3.8″
McGuire Air Force Base 5.8″5.8″2.6″0.2″0.0″0.0″0.0″0.0″0.0″0.0″0.6″3.1″
North Philadelphia Airport 6.4″6.4″2.8″0.1″0.0″0.0″0.0″0.0″0.0″0.0″0.6″3.5″
South Jersey Regional Airport 5.8″5.7″2.3″0.1″0.0″0.0″0.0″0.0″0.0″0.0″0.6″3.2″

Hours of Daylight

Compare the Hours of Daylight in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr15.09.3NowNowNorth Philadelphia AirportNorth Philadelphia AirportSouth Jersey Regional AirportSouth Jersey Regional AirportMcGuire Air Force BaseMcGuire Air Force BaseTrenton Mercer AirportTrenton Mercer AirportTrentonTrenton
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Trenton 9.7h10.7h12.0h13.3h14.4h15.0h14.7h13.7h12.4h11.1h9.9h9.4h
Trenton Mercer Airport 9.7h10.7h12.0h13.3h14.4h15.0h14.7h13.7h12.4h11.1h9.9h9.4h
McGuire Air Force Base 9.7h10.7h12.0h13.3h14.4h15.0h14.7h13.7h12.4h11.1h10.0h9.4h
North Philadelphia Airport 9.7h10.7h12.0h13.3h14.4h15.0h14.7h13.7h12.4h11.1h10.0h9.4h
South Jersey Regional Airport 9.7h10.7h12.0h13.3h14.4h15.0h14.7h13.7h12.4h11.1h10.0h9.4h

Chance of Muggy Conditions

Compare the Chance of Muggy Conditions in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%5660NowNowNorth Philadelphia AirportNorth Philadelphia AirportMcGuire Air Force BaseMcGuire Air Force BaseTrenton Mercer AirportTrenton Mercer AirportTrentonTrenton
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Trenton 0.0d0.0d0.0d0.1d2.0d8.6d15.9d14.0d6.3d1.2d0.1d0.0d
Trenton Mercer Airport 0.0d0.0d0.0d0.1d1.9d8.2d15.1d13.3d5.9d1.0d0.1d0.0d
McGuire Air Force Base 0.0d0.0d0.0d0.2d2.5d9.6d17.1d15.2d7.2d1.6d0.1d0.0d
North Philadelphia Airport 0.0d0.0d0.0d0.1d2.1d8.8d15.8d13.9d6.5d1.3d0.1d0.0d
South Jersey Regional Airport 0.0d0.0d0.0d0.1d2.1d8.6d16.1d14.2d6.6d1.3d0.1d0.0d

Average Wind Speed

Compare the Average Wind Speed in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mph11 mph11 mph9.05.38.54.910.76.610.2NowNowNorth Philadelphia AirportNorth Philadelphia AirportSouth Jersey Regional AirportSouth Jersey Regional AirportMcGuire Air Force BaseMcGuire Air Force BaseTrenton Mercer AirportTrenton Mercer AirportTrentonTrenton
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Trenton 8.58.88.88.06.75.95.55.56.17.07.68.0
Trenton Mercer Airport 7.98.38.27.46.25.55.15.05.66.47.07.4
McGuire Air Force Base 10.210.410.49.68.27.36.86.87.68.69.49.7
North Philadelphia Airport 8.38.78.88.26.96.15.65.56.16.97.57.8
South Jersey Regional Airport 9.610.010.19.48.07.16.66.57.28.28.89.1

Average Water Temperature

Compare the Average Water Temperature in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F7440NowNowNorth Philadelphia AirportNorth Philadelphia AirportSouth Jersey Regional AirportSouth Jersey Regional AirportMcGuire Air Force BaseMcGuire Air Force BaseTrenton Mercer AirportTrenton Mercer AirportTrentonTrenton
The daily average wide-area surface water temperature.
Water Temp.JanFebMarAprMayJunJulAugSepOctNovDec
Trenton 43°F40°F41°F46°F55°F65°F72°F73°F70°F63°F55°F48°F
Trenton Mercer Airport 43°F40°F41°F46°F55°F65°F72°F73°F70°F63°F55°F48°F
McGuire Air Force Base 43°F40°F42°F47°F55°F65°F72°F74°F70°F63°F56°F49°F
North Philadelphia Airport 41°F39°F42°F48°F57°F66°F73°F74°F71°F63°F55°F47°F
South Jersey Regional Airport 43°F40°F42°F47°F55°F65°F72°F74°F70°F64°F56°F49°F

Tourism Score

Compare the Tourism Score in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.70.2NowNowNorth Philadelphia AirportNorth Philadelphia AirportSouth Jersey Regional AirportSouth Jersey Regional AirportMcGuire Air Force BaseMcGuire Air Force BaseTrenton Mercer AirportTrenton Mercer Airport
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score

Compare the Beach/Pool Score in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.0NowNowNorth Philadelphia AirportNorth Philadelphia AirportSouth Jersey Regional AirportSouth Jersey Regional AirportMcGuire Air Force BaseMcGuire Air Force BaseTrenton Mercer AirportTrenton Mercer AirportTrentonTrenton
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season

Compare the Growing Season in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowNorth Philadelphia AirportNorth Philadelphia AirportSouth Jersey Regional AirportSouth Jersey Regional AirportMcGuire Air Force BaseMcGuire Air Force BaseTrenton Mercer AirportTrenton Mercer AirportTrentonTrenton
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Growing Degree Days

Compare the Growing Degree Days in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°F4,000°F4,000°FNowNowNorth Philadelphia AirportNorth Philadelphia AirportSouth Jersey Regional AirportSouth Jersey Regional AirportMcGuire Air Force BaseMcGuire Air Force BaseTrenton Mercer AirportTrenton Mercer AirportTrentonTrenton
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy

Compare the Average Daily Incident Shortwave Solar Energy in Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional AirportJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh6.81.8NowNowNorth Philadelphia AirportNorth Philadelphia AirportSouth Jersey Regional AirportSouth Jersey Regional AirportMcGuire Air Force BaseMcGuire Air Force BaseTrenton Mercer AirportTrenton Mercer AirportTrentonTrenton
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec
Trenton 2.13.04.25.46.36.76.66.05.03.72.51.9
Trenton Mercer Airport 2.13.04.25.46.36.76.66.05.03.72.51.9
McGuire Air Force Base 2.23.04.25.46.36.86.66.05.03.72.51.9
North Philadelphia Airport 2.23.04.25.46.36.86.66.05.03.72.51.9
South Jersey Regional Airport 2.23.14.25.56.36.86.66.05.03.72.51.9

This report illustrates the typical weather for Trenton, Trenton Mercer Airport, McGuire Air Force Base, North Philadelphia Airport, and South Jersey Regional Airport year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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