NJ Daily Station Normals (1991-2020)

Somerville

Station ID: 288174

Minimum Temperature (°F)

DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTH
Jan 22.5 22.3 22.1 21.9 21.7 21.5 21.4 21.2 21.0 20.9 20.8 20.6 20.5 20.4 20.3 20.2 20.1 20.0 20.0 19.9 19.9 19.9 19.9 19.8 19.9 19.9 19.9 19.9 20.0 20.0 20.1 20.6
Feb 20.2 20.3 20.4 20.5 20.6 20.7 20.9 21.0 21.2 21.3 21.5 21.7 21.8 22.0 22.2 22.4 22.6 22.8 23.0 23.2 23.5 23.7 23.9 24.1 24.4 24.6 24.9 25.1 25.2 N/A N/A 22.3
Mar 25.3 25.6 25.9 26.1 26.4 26.6 26.9 27.2 27.4 27.7 28.0 28.3 28.5 28.8 29.1 29.4 29.7 30.0 30.3 30.6 30.9 31.2 31.5 31.8 32.1 32.4 32.7 33.0 33.4 33.7 34.0 29.5
Apr 34.3 34.6 34.9 35.3 35.6 35.9 36.2 36.5 36.9 37.2 37.5 37.8 38.1 38.5 38.8 39.1 39.4 39.7 40.0 40.3 40.7 41.0 41.3 41.6 41.9 42.2 42.5 42.8 43.1 43.4 N/A 38.9
May 43.7 44.0 44.3 44.6 44.9 45.2 45.5 45.8 46.1 46.4 46.6 46.9 47.2 47.5 47.8 48.2 48.5 48.8 49.1 49.4 49.7 50.0 50.3 50.6 50.9 51.3 51.6 51.9 52.2 52.5 52.9 48.2
Jun 53.2 53.5 53.8 54.2 54.5 54.8 55.1 55.5 55.8 56.1 56.4 56.7 57.0 57.3 57.6 57.9 58.2 58.5 58.8 59.0 59.3 59.6 59.8 60.1 60.3 60.6 60.8 61.0 61.2 61.4 N/A 57.6
Jul 61.6 61.8 61.9 62.1 62.3 62.4 62.5 62.7 62.8 62.9 63.0 63.1 63.2 63.2 63.3 63.3 63.4 63.4 63.4 63.5 63.5 63.5 63.5 63.5 63.5 63.4 63.4 63.4 63.3 63.3 63.2 63.0
Aug 63.1 63.1 63.0 62.9 62.8 62.7 62.6 62.5 62.4 62.3 62.2 62.1 61.9 61.8 61.7 61.5 61.4 61.2 61.1 60.9 60.7 60.5 60.3 60.2 60.0 59.7 59.5 59.3 59.1 58.9 58.6 61.3
Sep 58.4 58.1 57.9 57.6 57.3 57.0 56.8 56.5 56.2 55.8 55.5 55.2 54.9 54.5 54.2 53.8 53.5 53.1 52.8 52.4 52.0 51.6 51.3 50.9 50.5 50.1 49.7 49.3 48.9 48.4 N/A 53.8
Oct 48.0 47.6 47.2 46.8 46.4 46.0 45.6 45.1 44.7 44.3 43.9 43.5 43.1 42.7 42.3 41.9 41.6 41.2 40.8 40.4 40.1 39.7 39.3 39.0 38.7 38.3 38.0 37.7 37.3 37.0 36.7 42.1
Nov 36.4 36.1 35.9 35.6 35.3 35.0 34.8 34.5 34.3 34.0 33.8 33.6 33.3 33.1 32.9 32.7 32.5 32.2 32.0 31.8 31.6 31.4 31.2 31.0 30.8 30.6 30.4 30.2 30.0 29.8 N/A 32.9
Dec 29.6 29.4 29.2 28.9 28.7 28.5 28.3 28.1 27.9 27.6 27.4 27.2 26.9 26.7 26.5 26.2 26.0 25.8 25.5 25.3 25.0 24.8 24.6 24.3 24.1 23.9 23.6 23.4 23.2 22.9 22.7 26.2

Maximum Temperature (°F)

DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTH
Jan 40.2 40.0 39.9 39.7 39.6 39.5 39.4 39.3 39.2 39.1 39.1 39.0 39.0 38.9 38.9 38.9 38.9 38.9 38.9 38.9 39.0 39.0 39.1 39.2 39.2 39.3 39.4 39.5 39.7 39.8 39.9 39.3
Feb 40.1 40.2 40.4 40.6 40.7 40.9 41.1 41.3 41.5 41.7 41.9 42.1 42.4 42.6 42.8 43.0 43.3 43.5 43.7 44.0 44.2 44.4 44.7 44.9 45.2 45.4 45.7 45.9 46.0 N/A N/A 42.8
Mar 46.2 46.4 46.7 46.9 47.2 47.5 47.8 48.0 48.3 48.6 48.9 49.2 49.5 49.8 50.1 50.4 50.8 51.1 51.4 51.8 52.1 52.5 52.9 53.3 53.7 54.1 54.5 54.9 55.3 55.7 56.2 50.7
Apr 56.6 57.1 57.5 58.0 58.4 58.9 59.4 59.8 60.3 60.8 61.2 61.7 62.2 62.6 63.1 63.5 64.0 64.4 64.8 65.2 65.7 66.1 66.5 66.8 67.2 67.6 67.9 68.3 68.6 68.9 N/A 63.1
May 69.2 69.6 69.8 70.1 70.4 70.7 70.9 71.2 71.4 71.7 71.9 72.1 72.4 72.6 72.8 73.0 73.2 73.5 73.7 73.9 74.1 74.4 74.6 74.8 75.1 75.3 75.6 75.8 76.1 76.4 76.7 73.0
Jun 76.9 77.2 77.5 77.8 78.1 78.5 78.8 79.1 79.4 79.7 80.1 80.4 80.7 81.0 81.4 81.7 82.0 82.3 82.6 82.9 83.2 83.5 83.8 84.0 84.3 84.5 84.8 85.0 85.2 85.4 N/A 81.4
Jul 85.6 85.7 85.9 86.0 86.1 86.2 86.3 86.4 86.5 86.5 86.5 86.6 86.6 86.6 86.6 86.6 86.5 86.5 86.4 86.4 86.3 86.3 86.2 86.1 86.1 86.0 85.9 85.8 85.8 85.7 85.6 86.2
Aug 85.5 85.5 85.4 85.3 85.2 85.2 85.1 85.0 84.9 84.9 84.8 84.7 84.7 84.6 84.5 84.4 84.4 84.3 84.2 84.1 84.0 83.9 83.8 83.7 83.5 83.4 83.2 83.1 82.9 82.7 82.5 84.3
Sep 82.3 82.1 81.9 81.6 81.4 81.1 80.8 80.5 80.2 79.9 79.6 79.3 78.9 78.6 78.2 77.8 77.4 77.0 76.6 76.2 75.8 75.4 75.0 74.6 74.2 73.7 73.3 72.9 72.5 72.0 N/A 77.7
Oct 71.6 71.2 70.8 70.4 70.0 69.6 69.2 68.8 68.4 68.0 67.6 67.2 66.9 66.5 66.1 65.8 65.4 65.1 64.7 64.4 64.0 63.7 63.3 63.0 62.7 62.3 62.0 61.6 61.3 61.0 60.6 65.9
Nov 60.3 59.9 59.6 59.2 58.9 58.5 58.2 57.8 57.4 57.1 56.7 56.3 55.9 55.5 55.2 54.8 54.4 54.0 53.6 53.2 52.8 52.4 52.0 51.6 51.2 50.8 50.5 50.1 49.7 49.3 N/A 54.9
Dec 48.9 48.5 48.2 47.8 47.4 47.1 46.7 46.4 46.0 45.7 45.4 45.0 44.7 44.4 44.1 43.8 43.5 43.2 43.0 42.7 42.4 42.2 41.9 41.7 41.5 41.3 41.1 40.9 40.7 40.5 40.3 44.1

Average Temperature (°F)

DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTH
Jan 31.3 31.2 31.0 30.8 30.7 30.5 30.4 30.2 30.1 30.0 29.9 29.8 29.7 29.7 29.6 29.5 29.5 29.5 29.4 29.4 29.4 29.4 29.5 29.5 29.5 29.6 29.7 29.7 29.8 29.9 30.0 29.9
Feb 30.1 30.3 30.4 30.5 30.7 30.8 31.0 31.2 31.3 31.5 31.7 31.9 32.1 32.3 32.5 32.7 32.9 33.2 33.4 33.6 33.8 34.1 34.3 34.5 34.8 35.0 35.3 35.5 35.6 N/A N/A 32.6
Mar 35.8 36.0 36.3 36.5 36.8 37.1 37.3 37.6 37.9 38.2 38.4 38.7 39.0 39.3 39.6 39.9 40.2 40.5 40.9 41.2 41.5 41.9 42.2 42.5 42.9 43.2 43.6 44.0 44.3 44.7 45.1 40.1
Apr 45.5 45.8 46.2 46.6 47.0 47.4 47.8 48.2 48.6 49.0 49.4 49.8 50.1 50.5 50.9 51.3 51.7 52.1 52.4 52.8 53.2 53.5 53.9 54.2 54.5 54.9 55.2 55.5 55.8 56.2 N/A 51.0
May 56.5 56.8 57.1 57.4 57.6 57.9 58.2 58.5 58.7 59.0 59.3 59.5 59.8 60.1 60.3 60.6 60.8 61.1 61.4 61.6 61.9 62.2 62.5 62.7 63.0 63.3 63.6 63.9 64.2 64.5 64.8 60.6
Jun 65.1 65.4 65.7 66.0 66.3 66.6 67.0 67.3 67.6 67.9 68.2 68.6 68.9 69.2 69.5 69.8 70.1 70.4 70.7 71.0 71.3 71.5 71.8 72.1 72.3 72.5 72.8 73.0 73.2 73.4 N/A 69.5
Jul 73.6 73.7 73.9 74.1 74.2 74.3 74.4 74.5 74.6 74.7 74.8 74.8 74.9 74.9 74.9 74.9 75.0 75.0 74.9 74.9 74.9 74.9 74.8 74.8 74.8 74.7 74.7 74.6 74.5 74.5 74.4 74.6
Aug 74.3 74.3 74.2 74.1 74.0 73.9 73.9 73.8 73.7 73.6 73.5 73.4 73.3 73.2 73.1 73.0 72.9 72.7 72.6 72.5 72.4 72.2 72.1 71.9 71.7 71.6 71.4 71.2 71.0 70.8 70.6 72.8
Sep 70.3 70.1 69.9 69.6 69.4 69.1 68.8 68.5 68.2 67.9 67.6 67.2 66.9 66.5 66.2 65.8 65.5 65.1 64.7 64.3 63.9 63.5 63.1 62.7 62.3 61.9 61.5 61.1 60.7 60.2 N/A 65.8
Oct 59.8 59.4 59.0 58.6 58.2 57.8 57.4 57.0 56.6 56.2 55.8 55.4 55.0 54.6 54.2 53.9 53.5 53.1 52.8 52.4 52.0 51.7 51.3 51.0 50.7 50.3 50.0 49.7 49.3 49.0 48.7 54.0
Nov 48.4 48.0 47.7 47.4 47.1 46.8 46.5 46.2 45.9 45.5 45.2 44.9 44.6 44.3 44.0 43.7 43.4 43.1 42.8 42.5 42.2 41.9 41.6 41.3 41.0 40.7 40.4 40.1 39.8 39.5 N/A 43.9
Dec 39.2 39.0 38.7 38.4 38.1 37.8 37.5 37.2 36.9 36.7 36.4 36.1 35.8 35.6 35.3 35.0 34.8 34.5 34.2 34.0 33.7 33.5 33.3 33.0 32.8 32.6 32.3 32.1 31.9 31.7 31.5 35.1

Heating Degree Days (number of degrees the average daily temperature is below 65°F)

DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTH
Jan 34 34 34 34 34 34 35 35 35 35 35 35 35 35 35 36 36 36 36 36 36 36 36 36 35 35 35 35 35 35 35 1086
Feb 35 35 35 34 34 34 34 34 34 34 33 33 33 33 32 32 32 32 32 31 31 31 31 30 30 30 30 30 29 N/A N/A 908
Mar 29 29 29 28 28 28 28 27 27 27 27 26 26 26 25 25 25 24 24 24 24 23 23 22 22 22 21 21 21 20 20 772
Apr 20 19 19 18 18 18 17 17 16 16 16 15 15 15 14 14 14 13 13 12 12 12 12 11 11 10 10 10 10 9 N/A 427
May 9 9 8 8 8 8 8 7 7 7 7 6 6 6 6 6 5 5 5 5 5 4 4 4 4 4 4 3 3 3 3 178
Jun 3 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 N/A 28
Jul 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
Aug 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4
Sep 0 0 0 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5 6 N/A 71
Oct 6 6 7 7 8 8 8 9 9 9 10 10 10 11 11 11 12 12 12 13 13 14 14 14 14 15 15 15 16 16 16 352
Nov 17 17 17 18 18 18 18 19 19 19 20 20 20 21 21 21 22 22 22 22 23 23 23 24 24 24 25 25 25 26 N/A 633
Dec 26 26 26 27 27 27 28 28 28 28 29 29 29 29 30 30 30 30 31 31 31 32 32 32 32 32 33 33 33 33 34 925

Cooling Degree Days (number of degrees the average daily temperature is above 65°F)

DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTH
Jan 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Feb 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 N/A N/A 0
Mar 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Apr 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 N/A 7
May 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 41
Jun 3 3 3 3 3 4 4 4 4 4 4 4 5 5 5 5 6 6 6 6 7 7 7 7 8 8 8 8 8 8 N/A 163
Jul 9 9 9 9 9 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 9 299
Aug 9 9 9 9 9 9 9 9 9 9 9 8 8 8 8 8 8 8 8 8 8 7 7 7 7 7 7 6 6 6 6 246
Sep 6 6 5 5 5 5 5 4 4 4 4 4 4 3 3 3 3 2 2 2 2 2 2 2 2 1 1 1 1 1 N/A 94
Oct 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
Nov 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 N/A 0
Dec 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Cumulative monthly precipitation (month-to-date, in inches)

DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTH
Jan 0.11 0.22 0.33 0.45 0.57 0.69 0.81 0.91 1.01 1.12 1.23 1.33 1.43 1.54 1.64 1.74 1.84 1.93 2.03 2.13 2.22 2.32 2.41 2.51 2.60 2.69 2.78 2.87 2.96 3.06 3.16 3.16
Feb 0.08 0.16 0.23 0.30 0.38 0.46 0.53 0.60 0.68 0.75 0.83 0.91 0.99 1.06 1.14 1.22 1.30 1.38 1.45 1.53 1.61 1.69 1.78 1.86 1.94 2.02 2.11 2.20 2.20 N/A N/A 2.20
Mar 0.11 0.21 0.32 0.43 0.55 0.67 0.79 0.91 1.04 1.16 1.28 1.39 1.51 1.63 1.76 1.89 2.02 2.15 2.28 2.42 2.55 2.69 2.83 2.96 3.10 3.23 3.37 3.49 3.62 3.76 3.89 3.89
Apr 0.12 0.25 0.37 0.49 0.61 0.72 0.84 0.96 1.08 1.20 1.33 1.45 1.57 1.69 1.80 1.92 2.04 2.16 2.28 2.40 2.52 2.64 2.76 2.88 3.00 3.13 3.24 3.36 3.48 3.59 N/A 3.59
May 0.11 0.23 0.34 0.47 0.59 0.71 0.82 0.94 1.06 1.18 1.29 1.40 1.51 1.62 1.72 1.82 1.92 2.02 2.13 2.24 2.35 2.47 2.59 2.71 2.83 2.95 3.06 3.18 3.30 3.42 3.54 3.54
Jun 0.13 0.26 0.39 0.53 0.67 0.81 0.94 1.07 1.21 1.35 1.50 1.64 1.80 1.95 2.11 2.26 2.41 2.55 2.69 2.83 2.97 3.10 3.24 3.39 3.53 3.67 3.81 3.95 4.09 4.23 N/A 4.23
Jul 0.14 0.27 0.40 0.53 0.67 0.80 0.94 1.08 1.23 1.39 1.55 1.71 1.87 2.03 2.20 2.36 2.53 2.70 2.87 3.04 3.21 3.39 3.56 3.73 3.90 4.07 4.23 4.40 4.57 4.75 4.93 4.93
Aug 0.20 0.40 0.60 0.80 1.00 1.19 1.37 1.55 1.73 1.90 2.07 2.23 2.39 2.57 2.75 2.92 3.09 3.25 3.41 3.57 3.72 3.88 4.03 4.19 4.34 4.49 4.63 4.77 4.90 5.04 5.18 5.18
Sep 0.12 0.26 0.40 0.54 0.67 0.79 0.92 1.04 1.17 1.30 1.42 1.53 1.64 1.77 1.89 2.03 2.15 2.28 2.40 2.53 2.66 2.78 2.90 3.03 3.15 3.27 3.41 3.55 3.69 3.82 N/A 3.82
Oct 0.12 0.24 0.36 0.47 0.59 0.71 0.83 0.95 1.07 1.18 1.30 1.41 1.53 1.65 1.77 1.90 2.02 2.15 2.27 2.40 2.53 2.66 2.78 2.90 3.02 3.13 3.24 3.35 3.46 3.57 3.67 3.67
Nov 0.10 0.20 0.31 0.41 0.53 0.64 0.75 0.86 0.98 1.10 1.20 1.31 1.41 1.51 1.62 1.74 1.85 1.97 2.08 2.19 2.30 2.42 2.54 2.66 2.78 2.90 3.03 3.15 3.28 3.41 N/A 3.41
Dec 0.13 0.27 0.41 0.54 0.67 0.81 0.94 1.07 1.20 1.34 1.47 1.61 1.74 1.86 1.99 2.11 2.23 2.36 2.49 2.62 2.74 2.86 2.98 3.10 3.22 3.33 3.44 3.55 3.66 3.76 3.87 3.87