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    49.0 °F    0.07 in
    Nov 20, 2020 01.04 PM
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  • Climate

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  • Meteorology


Hanover

New Hampshire, United States Of America
44.00 ° N
72.00 ° W
604 ft
Boreal rain forest
Dfb Mild continental humid climate
+
DCbo Temperate continental climate with warm summer with cold winter
Traditional Koppen classification: Dfb (Mild continental humid climate)

Official definition:
  • D – temperature of the warmest month is higher than or equal to 10 °C and temperature of the coldest month is less than or equal to -3 °C.
  • f – precipitation is relatively evenly distributed throughout the year.
  • b - temperature of each of the four warmest months is higher than 10°C, but the temperature of the warmest month is less than 22 °C

In general it can be said that the D climate type can only be found in the Northern Hemisphere, northwards from the C climate zones, closer to the North Pole. The average temperature during the warmest month is higher than or equal to 10 °C, but in the winter the coldest month has an average value of less than -3 °C. In the winter it often snows and it tends to be quite windy and cold due to the polar and Arctic air masses.

Just like the Dfa type, precipitation is evenly distributed throughout the year. In comparison to the Dfa however, summer is slightly colder and the warmest month does not have average temperature above 22 °C. The highest summer temperatures are still usually between 30 and 35 °C, in the winter it drops to -10 to -35 °C.

Precipitation is higher in the summer, but the difference is not very large. Most of the precipitation in the summer occurs during thunderstorms and so quite often there are longer dry periods between them.

This Dfb category includes for example parts of Northern U.S. (for example Buffalo or Calgary), Southern part of Canada (for example Ottawa), Southern part of Russia (for example Vladivostok), Western part of Central Europe or Southern part of Scandinavia (for example Helsinki).


Modern Trewartha classification: DCbo (Temperate continental climate with warm summer with cold winter)

In the Trewartha classification, the category D is like in the Koppen classification, assigned to regions in the temperate zone. The criterion for this type of climate is four to seven months with average temperature of more than 10 °C. In general it is further subdivided into two subtypes: oceanic and continental. These differ in their average temperature of the coldest month.

Temperate climate is characterized by four distinct seasons and there are substantial differences between the temperatures in the summer and in the winter, but the absolute values are not so extreme and the change is gradual.

The continental subtype is typical for regions located more inland and this also means the temperature variation is larger than that in case of the oceanic subtype. The coldest month has an average temperature of less than 0 °C. Summers are usually warmer, while winters colder with snow being quite common.

Continental D climate type can be found for example in parts of Northeast U.S., Central and Eastern Europe and usually these areas are quite densely inhabited.

  • warm summer: warmest month with average temperature between 18 and 23 °C
  • cold winter: coldest month with average temperature between -10 and 0 °C

Summary

45 °F
34 / 56

37.4 in


Temperature
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Min Temperature(°F) 7.010.021.032.043.052.057.056.048.037.028.015.0 34.0
Avg Temperature(°F) 18.021.032.044.056.065.070.068.060.048.037.023.0 45.0
Max Temperature (°F) 28.033.043.056.069.078.083.080.071.059.045.032.0 56.0
Range 21.023.022.024.026.026.026.024.023.022.017.017.0 22.0


Max month Min month Yearly range
Min Temperature Jul Jan 50.0°F
Avg Temperature Jul Jan 52.0°F
Max Temperature Jul Jan 55.0°F
Temperature range May, Jun, Jul Nov, Dec 76.0°F
Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Min Temperature(°F)
Avg Temperature(°F)
Max Temperature(°F)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Min Temperature 43.0 21.0 32.00 22.0 57.0 52.0 55.00 5.0 48.0 28.0 37.67 20.0 15.0 7.0 10.67 8.0
Avg Temperature 56.0 32.0 44.00 24.0 70.0 65.0 67.67 5.0 60.0 37.0 48.33 23.0 23.0 18.0 20.67 5.0
Max Temperature 69.0 43.0 56.00 26.0 83.0 78.0 80.33 5.0 71.0 45.0 58.33 26.0 33.0 28.0 31.00 5.0

Temperature
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Temperature (°F) 18.021.032.044.056.065.070.068.060.048.037.023.0 45.0


Max month Min month Yearly range
Avg Temperature Jul Jan 52.0°F
Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Temperature (°F)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Avg Temperature 56.0 32.0 44.00 24.0 70.0 65.0 67.67 5.0 60.0 37.0 48.33 23.0 23.0 18.0 20.67 5.0


Humidity
+

Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Humidity (%) -9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0-9999.0 45.0


Max month Min month Yearly range
Avg Humidity 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec 0.0%
Month Average
1 2 3 4 5 6 7 8 9 10 11 12
Avg Humidity (%)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Range Max Min Average Range Max Min Average Range Max Min Average Range
Avg Humidity -9999.0 -9999.0 -9999.00 0.0 -9999.0 -9999.0 -9999.00 0.0 -9999.0 -9999.0 -9999.00 0.0 -9999.0 -9999.0 -9999.00 0.0


Precipitation
+

Month Monthly average Yearly total
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in) 2.62.42.62.93.53.33.33.63.33.33.53.1 3.1 37.4
Days with precipitation -9999-9999-9999-9999-9999-9999-9999-9999-9999-9999-9999-9999 -9999 -119988
Days with precipitation ratio (%) -32254.8
-9999,10030
-35710.7
-9999,10027
-32254.8
-9999,10030
-33330.0
-9999,10029
-32254.8
-9999,10030
-33330.0
-9999,10029
-32254.8
-9999,10030
-32254.8
-9999,10030
-33330.0
-9999,10029
-32254.8
-9999,10030
-33330.0
-9999,10029
-32254.8
-9999,10030
-32873.4
-32873.4,32973.4


Max month Min month Max Season Min Season Yearly range
Average monthly precipitation Aug Feb Summer, Fall Winter 1.3in
Days with precipitation 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec 0, Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec Fall Spring, Summer, Winter 0
Month
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in)
Days with precipitation / month


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Range Total Max Min Range Total Max Min Range Total Max Min Range Total
Average monthly precipitation (in) 3.5 2.6 0.9 9.1 3.6 3.3 0.4 10.2 3.5 3.3 0.2 10.2 3.1 2.4 0.8 8.0
Days with precipitation -9999 -9999 0 -29997 -9999 -9999 0 -29997 48 -9999 10047 -9914 -9999 -9999 0 -29997

Precipitation
+

Month Monthly average Yearly total
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in) 2.62.42.62.93.53.33.33.63.33.33.53.1 3.1 37.4


Max month Min month Max Season Min Season Yearly range
Average monthly precipitation Aug Feb Summer, Fall Winter 1.3in
Month
1 2 3 4 5 6 7 8 9 10 11 12
Average monthly precipitation (in)


Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Range Total Max Min Range Total Max Min Range Total Max Min Range Total
Average monthly precipitation (in) 3.5 2.6 0.9 9.1 3.6 3.3 0.4 10.2 3.5 3.3 0.2 10.2 3.1 2.4 0.8 8.0


Sun light / Length of day
+

Average daily sunlight Average day length Max length of day Min length of day Sun light/Length of day
Jan -9999 min
-167 h 21 min
558 min
9 h 18 min
558,882
588 min
9 h 48 min
(31.1.)
588,852
537 min
8 h 57 min
(1.1.)
537,903
-1790.4 %
-9999,10557
Feb -9999 min
-167 h 21 min
629 min
10 h 29 min
629,811
669 min
11 h 9 min
(29.2.)
669,771
591 min
9 h 51 min
(1.2.)
591,849
-1589.6 %
-9999,10628
Mar -9999 min
-167 h 21 min
718 min
11 h 58 min
718,722
764 min
12 h 44 min
(31.3.)
764,676
672 min
11 h 12 min
(1.3.)
672,768
-1392.8 %
-9999,10717
Apr -9999 min
-167 h 21 min
809 min
13 h 29 min
809,631
850 min
14 h 10 min
(30.4.)
850,590
767 min
12 h 47 min
(1.4.)
767,673
-1236.0 %
-9999,10808
May -9999 min
-167 h 21 min
886 min
14 h 46 min
886,554
914 min
15 h 14 min
(31.5.)
914,526
852 min
14 h 12 min
(1.5.)
852,588
-1128.3 %
-9999,10885
Jun -9999 min
-167 h 21 min
925 min
15 h 25 min
925,515
928 min
15 h 28 min
(20.6.)
928,512
915 min
15 h 15 min
(1.6.)
915,525
-1081.2 %
-9999,10924
Jul -9999 min
-167 h 21 min
904 min
15 h 4 min
904,536
924 min
15 h 24 min
(1.7.)
924,516
876 min
14 h 36 min
(31.7.)
876,564
-1106.3 %
-9999,10903
Aug -9999 min
-167 h 21 min
835 min
13 h 55 min
835,605
874 min
14 h 34 min
(1.8.)
874,566
794 min
13 h 14 min
(31.8.)
794,646
-1197.5 %
-9999,10834
Sep -9999 min
-167 h 21 min
748 min
12 h 28 min
748,692
791 min
13 h 11 min
(1.9.)
791,649
704 min
11 h 44 min
(30.9.)
704,736
-1337.5 %
-9999,10747
Oct -9999 min
-167 h 21 min
657 min
10 h 57 min
657,783
701 min
11 h 41 min
(1.10.)
701,739
614 min
10 h 14 min
(31.10.)
614,826
-1522.0 %
-9999,10656
Nov -9999 min
-167 h 21 min
577 min
9 h 37 min
577,863
612 min
10 h 12 min
(1.11.)
612,828
548 min
9 h 8 min
(30.11.)
548,892
-1732.4 %
-9999,10576
Dec -9999 min
-167 h 21 min
536 min
8 h 56 min
536,904
547 min
9 h 7 min
(1.12.)
547,893
532 min
8 h 52 min
(21.12.)
532,908
-1864.9 %
-9999,10535
Year -10832 min
-181 h 28 min
732 min
12 h 12 min
732,708
928 min
15 h 28 min
(20. 6.)
928,512
532 min
8 h 52 min
(21. 12.)
532,908
-1479.7 %
-10832,11564



Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Sun light/day Max Min Average Sun light/day Max Min Average Sun light/day Max Min Average Sun light/day
Average sunlight (min/day) -9999 -9999 -9999 -1243.2%
-9999,10803
-9999 -9999 -9999 -1126.7%
-9999,10886
-9999 -9999 -9,999 -1513.8%
-9999,10660
-9999 -9999 -9999 -1744.0%
-9999,10572
Length of day 914 672 804 928 794 887 791 548 661 669 532 573

Length of day
+

Average day length Max length of day Min length of day
Jan 558 min
9 h 18 min
558,882
588 min
9 h 48 min
(Array.1.)
588,852
537 min
8 h 57 min
(1.1.)
537,903
Feb 629 min
10 h 29 min
629,811
669 min
11 h 9 min
(Array.2.)
669,771
591 min
9 h 51 min
(1.2.)
591,849
Mar 718 min
11 h 58 min
718,722
764 min
12 h 44 min
(Array.3.)
764,676
672 min
11 h 12 min
(1.3.)
672,768
Apr 809 min
13 h 29 min
809,631
850 min
14 h 10 min
(Array.4.)
850,590
767 min
12 h 47 min
(1.4.)
767,673
May 886 min
14 h 46 min
886,554
914 min
15 h 14 min
(Array.5.)
914,526
852 min
14 h 12 min
(1.5.)
852,588
Jun 925 min
15 h 25 min
925,515
928 min
15 h 28 min
(Array.6.)
928,512
915 min
15 h 15 min
(1.6.)
915,525
Jul 904 min
15 h 4 min
904,536
924 min
15 h 24 min
(Array.7.)
924,516
876 min
14 h 36 min
(31.7.)
876,564
Aug 835 min
13 h 55 min
835,605
874 min
14 h 34 min
(Array.8.)
874,566
794 min
13 h 14 min
(31.8.)
794,646
Sep 748 min
12 h 28 min
748,692
791 min
13 h 11 min
(Array.9.)
791,649
704 min
11 h 44 min
(30.9.)
704,736
Oct 657 min
10 h 57 min
657,783
701 min
11 h 41 min
(Array.10.)
701,739
614 min
10 h 14 min
(31.10.)
614,826
Nov 577 min
9 h 37 min
577,863
612 min
10 h 12 min
(Array.11.)
612,828
548 min
9 h 8 min
(30.11.)
548,892
Dec 536 min
8 h 56 min
536,904
547 min
9 h 7 min
(Array.12.)
547,893
532 min
8 h 52 min
(21.12.)
532,908
Year 732 min
12 h 12 min
732,708
928 min
15 h 28 min
(21. 6.)
928,512
532 min
8 h 52 min
(22. 12.)
532,908



Mar, Apr, May

Jun, Jul, Aug

Sep, Oct, Nov

Dec, Jan, Feb
Max Min Average Max Min Average Max Min Average Max Min Average
Length of day 914 672 804 928 794 887 791 548 661 669 532 573


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