Climate and monthly weather forecastLewistown, NJ
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Lewistown, New Jersey, with an average temperature ranging between min 25.2°F (-3.8°C) and max 37.8°F (3.2°C). January is the month when Lewistown experiences its coldest temperatures, averaging a high of 37.8°F (3.2°C) and a low of 25.2°F (-3.8°C). Weather in January »Weather in February
February, the last month of the winter in Lewistown, is also an icy month, with an average temperature ranging between min 27.5°F (-2.5°C) and max 41.4°F (5.2°C). As Lewistown, New Jersey, steps into February, the average high-temperature is measured at a still cold 41.4°F (5.2°C), displaying minor differences from January's 37.8°F (3.2°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Lewistown, New Jersey, with temperature in the range of an average high of 49.5°F (9.7°C) and an average low of 34.3°F (1.3°C). As Lewistown transitions into March, the average high-temperature is observed to slightly rise from a cold 41.4°F (5.2°C) in February to a frosty 49.5°F (9.7°C). Weather in March »Weather in April
April is a comfortable spring month in Lewistown, New Jersey, with temperature in the range of an average low of 44.2°F (6.8°C) and an average high of 60.8°F (16°C). With the arrival of April, the average high-temperature transitions from a chilly 49.5°F (9.7°C) in March to a refreshing 60.8°F (16°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Lewistown, New Jersey, with an average temperature ranging between min 53.8°F (12.1°C) and max 70.3°F (21.3°C). A shift in the average high-temperature is noticeable in May, changing from an enjoyable 60.8°F (16°C) in April to an agreeable 70.3°F (21.3°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Lewistown, New Jersey, with an average temperature ranging between min 61.7°F (16.5°C) and max 78.8°F (26°C). June brings a slight increase in the average high-temperature, progressing from an agreeable 70.3°F (21.3°C) in May to a warm 78.8°F (26°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Lewistown, New Jersey, with an average temperature fluctuating between 84.4°F (29.1°C) and 67.6°F (19.8°C). Lewistown registers the highest average temperatures during the month of July, with peaks of 84.4°F (29.1°C) and lows of 67.6°F (19.8°C). The heat index for July is estimated at a hot 93.2°F (34°C). Weather in July »Weather in August
August, the last month of the summer in Lewistown, is also a moderately hot month, with temperature in the range of an average low of 66.9°F (19.4°C) and an average high of 82.8°F (28.2°C). Lewistown's weather in August displays an average high-temperature of a still warm 82.8°F (28.2°C), showing minor disparity from July's 84.4°F (29.1°C). Weather in August »Weather in September
September, the first month of the autumn in Lewistown, is still a warm month, with an average temperature varying between 60.4°F (15.8°C) and 76.1°F (24.5°C). Lewistown's transition into September involves a gentle shift in temperature, receding from a warm 82.8°F (28.2°C) in August to a still moderately hot 76.1°F (24.5°C). Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Lewistown, New Jersey, with an average temperature fluctuating between 64.6°F (18.1°C) and 50.5°F (10.3°C). The move into October indicates a reduction in the average high-temperature, down from September's moderately hot 76.1°F (24.5°C) to a refreshing 64.6°F (18.1°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Lewistown, New Jersey, with an average temperature varying between 52.7°F (11.5°C) and 39.2°F (4°C). As October shifts into November, a slight alteration in temperatures is observed, with average highs reducing from a comfortable 64.6°F (18.1°C) to a cool 52.7°F (11.5°C). Weather in November »Weather in December
December, the first month of the winter in Lewistown, is also a frosty month, with an average temperature ranging between max 44.2°F (6.8°C) and min 32.7°F (0.4°C). As December commences, the average high-temperature subtly reduces, transitioning from a cool 52.7°F (11.5°C) in November to a chilly 44.2°F (6.8°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Lewistown, NJ
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (37.8°F).
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure
Lewistown, NJ
- Average pressure in January:
30.08"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Lewistown, NJ
- Average wind speed in January:
8.5mph - Average wind speed in February:
8.6mph - Average wind speed in March:
8.8mph - Average wind speed in April:
8.7mph - Average wind speed in May:
7.1mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.8mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.2mph - Average wind speed in October:
7.3mph - Average wind speed in November:
7.7mph - Average wind speed in December:
7.8mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity
Lewistown, NJ
The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall
Lewistown, NJ
- Average rainfall in January:
2.13" - Average rainfall in February:
2.4" - Average rainfall in March:
2.95" - Average rainfall in April:
2.72" - Average rainfall in May:
2.76" - Average rainfall in June:
2.56"
- Average rainfall in July:
3.39" - Average rainfall in August:
3.35" - Average rainfall in September:
1.89" - Average rainfall in October:
2.68" - Average rainfall in November:
2.48" - Average rainfall in December:
3.7"
The wettest month (with the highest rainfall) is December (3.7").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days
Lewistown, NJ
- Average rainfall days in January:
9.2 days - Average rainfall days in February:
9.8 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
17 days - Average rainfall days in June:
15.9 days
- Average rainfall days in July:
17 days - Average rainfall days in August:
15.2 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
12 days - Average rainfall days in November:
9 days - Average rainfall days in December:
10.9 days
The months with the highest number of rainy days are May and July (17 days).
The month with the least rainy days is November (9 days).
Average snowfall
Lewistown, NJ
- Average snowfall in January:
2.24" - Average snowfall in February:
2.32" - Average snowfall in March:
3.54" - Average snowfall in April:
0.28" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is March (3.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Lewistown, NJ
- Average snowfall days in January:
5.9 days - Average snowfall days in February:
5.1 days - Average snowfall days in March:
3.8 days - Average snowfall days in April:
0.4 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
0.6 days - Average snowfall days in December:
3.6 days
The month with the highest number of snowfall days is January (5.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Lewistown, NJ
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
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).
- Average sunshine in January:
4h and 54min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 18min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 36min - Average sunshine in October:
5h and 36min - Average sunshine in November:
5h and 24min - Average sunshine in December:
5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Lewistown, NJ
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
13.9 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
12 days - Average sunshine days in June:
12.5 days
- Average sunshine days in July:
11.8 days - Average sunshine days in August:
14 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
16.7 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
17.5 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (11.8 days).
Average UV index
Lewistown, NJ
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Lewistown, NJ
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility
Lewistown, NJ
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





