Princeton Weather Information
Princeton historical weather data by month.
Chance Of Sunshine
ANNUAL CHANCE OF SUNSHINE 54.67%
Annual chance of sunshine: 54.67%
Month
% Sunny
Clear Days
Partly Cloudy Days
Cloudy Days
January
41.94%
7
6
18
February
48.28%
6
8
15
March
48.39%
7
8
16
April
53.33%
8
8
14
May
51.61%
7
9
15
June
63.33%
7
12
11
July
67.74%
10
11
10
August
73.33%
11
11
8
September
63.33%
11
8
11
October
58.06%
11
7
13
November
43.33%
9
4
17
December
43.33%
7
6
17
Temperature
JULY HIGH 91.6° - JANUARY LOW 25.6°
Month
Average
Max Average
Min Average
January
35.5°
45.4°
25.6°
February
40.6°
51.5°
29.6°
March
50.1°
62°
38.1°
April
59.4°
72°
46.7°
May
67.7°
80°
55.4°
June
76°
88°
64°
July
79.8°
91.6°
67.9°
August
78.3°
90.5°
66.1°
September
71.7°
84.4°
59°
October
60.7°
74°
47.4°
November
49.9°
60.7°
39°
December
39.9°
49.7°
30°
Rainfall
Average Annual Rainfall 51.45 inches
Month
Average Rainfall
January
4.01 Inches
February
4.48 Inches
March
4.7 Inches
April
4.7 Inches
May
5.01 Inches
June
4.06 Inches
July
4.52 Inches
August
3.56 Inches
September
3.28 Inches
October
3.28 Inches
November
4.8 Inches
December
5.05 Inches
Sum Of Heating & Cooling Degree Days
Potential Demand For Energy
Month
Heating Degree Days
Cooling Degree Days
January
915
0
February
683
0
March
469
6
April
197
26
May
61
146
June
1
331
July
0
458
August
0
412
September
21
223
October
187
54
November
459
5
December
781
0