Annual mean 12°C · wettest around February · prevailing wind W
Warmest
28.5 °C
Coldest
1.5 °C
Wettest
28%
Windiest
4.0 m/s
Prevailing
W
3.2 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Hackettstown over the whole year is 12°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -2°C. Hackettstown has no sharply defined rainy season: the chance of rain on a given day runs from 26% in June, the driest month, to 31% in February, the wettest. Winds in Hackettstown are highest in March, averaging 2.9 m/s (10 km/h), and lightest in July, at 1.6 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Hackettstown come in July, when the sky is typically 39% covered; May is the cloudiest month, at 52%.
Month by month Hackettstown climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
2°C
-2°C
-3°C
29%
52%
2.6 m/s
1
0
7
February
4°C
-1°C
-1°C
31%
48%
2.5 m/s
2
0
16
March
8°C
2°C
4°C
30%
48%
2.9 m/s
8
0
33
April
14°C
7°C
10°C
30%
50%
2.8 m/s
27
3
59
May
20°C
12°C
18°C
29%
52%
2.2 m/s
59
16
67
June
25°C
17°C
25°C
26%
41%
1.9 m/s
65
43
39
July
28°C
21°C
30°C
30%
39%
1.6 m/s
32
63
9
August
27°C
19°C
28°C
28%
40%
1.6 m/s
45
60
18
September
23°C
15°C
23°C
27%
43%
1.7 m/s
69
34
49
October
17°C
10°C
15°C
28%
47%
1.9 m/s
52
8
72
November
10°C
3°C
6°C
27%
40%
2.2 m/s
13
0
43
December
4°C
0°C
-0°C
31%
51%
2.2 m/s
1
0
14
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Hackettstown weather by season
Year round, Hackettstown has days of about 2°C at their warmest in January, its coolest month, and 28°C in July, its warmest; the coolest hours of the day run from -2°C to 21°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around February and least likely around June. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Hackettstown weather in winterDecember to February
High 3°CLow -1°CRain 30%
Winter in Hackettstown has typical daily highs of about 3°C and lows of about -1°C, with a 30% chance of rain on a given day.
Hackettstown weather in springMarch to May
High 14°CLow 7°CRain 30%
Spring in Hackettstown has typical daily highs of about 14°C and lows of about 7°C, with a 30% chance of rain on a given day.
Hackettstown weather in summerJune to August
High 27°CLow 19°CRain 28%
Summer in Hackettstown has typical daily highs of about 27°C and lows of about 19°C, with a 28% chance of rain on a given day.
Hackettstown weather in autumnSeptember to November
High 17°CLow 9°CRain 28%
Autumn in Hackettstown has typical daily highs of about 17°C and lows of about 9°C, with a 28% chance of rain on a given day.
When is the rainy season in Hackettstown?
Hackettstown has no sharply defined rainy season: the chance of rain on a given day runs from 26% in June, the driest month, to 31% in February, the wettest.
What time of year is Hackettstown windiest?
Winds in Hackettstown are highest in March, averaging 2.9 m/s (10 km/h), and lightest in July, at 1.6 m/s (6 km/h). The prevailing wind is from the W.
What is the average temperature in Hackettstown year round?
The average temperature in Hackettstown over the whole year is 12°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -2°C.