JanFebMarAprMayJunJulAugSepOctNovDec
11.4-8.57.012.7        
21.5-10.211.913.4        
30.5-6.613.76.5        
4-2.3-6.56.69.5        
5-1.3-3.48.817.5        
6-2.9-0.512.87.9        
7-4.2-0.415.07.6        
8-5.0-0.914.74.6        
9-3.0-3.615.16.1        
10-0.3-2.014.111.5        
11-0.21.516.213.1        
12-0.62.012.115.5        
13-1.51.114.213.9        
142.1-1.616.713.7        
152.6-3.19.112.2        
161.2-6.46.614.4        
17-1.0-6.75.713.6        
18-5.5-1.612.117.9        
19-3.9-1.710.614.6        
20-2.10.89.4         
21-4.33.810.3         
22-3.04.513.0         
23-6.75.315.3         
24-4.03.614.7         
25-3.92.814.7         
26-1.88.56.8         
27-0.112.310.5         
28-0.714.812.6         
29-4.49.5         
30-5.19.8         
31-7.99.0     
Avg: -2.1-0.111.6* 11.9        
Hi: 2.614.816.7* 17.9        
Lo: -7.9-10.25.7* 4.6        
Note:  *Incomplete dataset.
AvgJanFebMarAprMayJunJulAugSepOctNovDec
2026-2.1-0.111.6* 11.9        
20253.42.710.515.716.122.024.222.420.011.75.94.7
20242.36.710.214.423.123.825.124.921.613.35.94.8
20234.44.17.312.719.424.223.923.723.313.05.83.8
20223.65.48.511.317.824.323.326.516.314.36.42.0
20211.12.37.010.517.826.526.120.918.312.97.11.3
20205.06.18.213.715.523.322.625.820.113.28.13.1
20191.45.58.714.816.528.222.225.417.913.27.14.7
20182.4-0.33.317.223.424.424.925.420.114.56.73.4
20170.42.48.910.518.921.622.023.017.112.46.43.6
2016-0.74.56.613.421.624.623.021.519.99.14.33.1
20153.13.78.612.318.021.123.827.218.411.37.76.4
2014-1.05.810.415.818.320.927.023.119.813.76.72.5
2013-0.61.71.712.021.723.324.024.016.913.56.94.6
2012          * 4.3-0.3
Avg1.63.68.0* 13.319.123.724.024.119.212.8* 6.43.4