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 Climate Information of Palampur 

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        The center receives an average annual rainfall of 2596 mm in 89 rainy days. The rainy season starts during 1st week of July and ends in 2nd week of November with duration of 18 weeks. The average monsoon seasonal rainfall (June to September) is 1412 mm and can vary from 939 mm to 1929 mm. Peak rainfall occurs during 2nd week of August. Daytime temperature varies from 14.2° C (3rd week of January) to 31.1° C (1st week of June), while the nighttime temperature varies from 4.5° C (3rd week of January) to 20.3° C (1st week of July).

 

Average Weekly Weather Data

WEEK MAXT (°C)  MINT (°C)  RH-I   (%)  RH-II (%)  WS (kmph)  RF (mm/week)  SSH   (hrs)  EVP (mm/week)
1 15.6 5.4 53 43 4.6 12.9 5.8 11.5
2 14.9 5.2 58 48 4.7 14.8 5.8 10.8
3 14.2 4.5 58 49 5.3 19.3 5.9 11.0
4 15.0 5.3 59 49 5.2 19.9 6.2 12.1
5 16.0 5.7 55 44 5.0 7.1 7.2 12.9
6 17.0 6.8 55 47 5.7 21.0 6.0 15.2
7 17.2 7.1 56 44 5.8 24.8 6.2 15.1
8 17.3 6.6 55 45 6.2 24.0 6.3 17.3
9 17.8 7.9 55 43 6.0 17.6 6.8 18.9
10 20.4 9.4 54 41 6.7 8.4 8.0 21.8
11 20.7 10.1 53 43 7.4 24.7 6.6 22.9
12 21.2 10.5 52 44 6.8 30.5 5.8 23.7
13 22.8 11.7 49 41 6.2 7.9 7.8 28.4
14 23.9 12.7 45 36 6.3 13.8 7.9 31.4
15 25.1 13.9 45 37 6.6 13.1 7.7 32.8
16 26.6 15.1 45 35 6.2 9.0 8.0 37.8
17 28.1 16.7 45 35 6.3 6.6 8.8 39.9
18 29.7 17.7 41 32 6.9 10.4 8.2 43.8
19 29.5 17.8 44 34 6.4 12.2 8.7 46.4
20 30.3 18.5 44 35 6.0 14.4 9.0 44.1
21 30.8 19.3 46 37 6.0 11.7 9.1 47.0
22 30.8 19.2 46 39 6.2 14.8 8.8 48.3
23 31.1 19.8 51 41 5.8 19.6 8.5 46.4
24 30.1 19.8 60 54 5.4 39.0 7.4 39.4
25 29.3 19.6 69 61 5.0 51.4 7.2 35.4
26 28.6 20.2 72 66 4.5 70.5 6.1 29.0
27 28.1 20.3 76 72 4.4 74.0 5.8 24.0
28 27.0 19.8 82 76 3.9 93.1 3.9 20.2
29 26.4 20.2 85 81 3.6 142.3 2.9 17.9
30 26.5 19.6 83 80 3.6 122.7 3.9 19.2
31 26.1 19.9 83 80 3.5 114.7 3.1 16.7
32 26.4 19.9 85 81 3.4 174.7 3.3 16.1
33 26.7 19.8 84 80 3.4 121.1 3.7 15.6
34 26.1 19.4 84 80 3.5 123.7 3.8 15.0
35 26.5 19.0 82 79 3.8 116.8 4.4 17.1
36 26.1 18.5 81 75 3.9 84.1 4.9 17.2
37 25.8 17.7 77 74 3.8 40.9 5.4 18.2
38 26.1 17.3 72 68 4.2 35.5 6.9 20.5
39 26.4 16.4 67 61 4.6 13.5 8.3 22.1
40 26.1 15.2 63 54 4.8 5.2 8.7 23.4
41 26.2 14.5 57 48 4.9 1.6 9.4 25.4
42 24.7 13.5 56 47 4.8 8.5 8.8 23.2
43 24.1 12.9 54 43 4.7 0.5 8.8 21.5
44 23.7 12.2 55 44 4.7 1.4 8.9 19.7
45 22.6 11.0 51 42 5.4 5.9 8.2 18.5
46 21.7 9.9 51 40 5.1 1.5 8.3 17.5
47 20.5 9.0 50 40 4.6 1.3 7.7 16.0
48 19.3 7.9 51 40 4.8 3.2 7.7 15.0
49 19.4 8.2 47 39 4.4 5.5 7.1 13.5
50 18.4 7.0 49 42 4.3 3.4 6.4 13.3
51 18.0 6.7 47 40 4.5 3.9 7.0 13.0
52 16.6 5.7 53 45 4.7 10.2 6.4 13.4

 

    Rainfall Statistics (Database 1991-2002)

Monthly and Annual Rainfall Normals (mm)

Parameter

 Jan Feb Mar Apr May June Jul Aug Sep Oct Nov Dec

Annual

Average

 869.5 76.8 91.3 41.1 56.2 183.1 443.5 580.3 205.2 17.9 14.2 17.0 2596.1

Lowest

10.0 16.0 14.0 1.0 13.0 75.0 223.0 341.0 67.0 0.0 0.0 0.0 1126

Highest

 2199.0 195.0 262.0 97.0 129.0 335.0 643.0 822.0 315.0 97.0 67.0 90.0 4424.0

SD

 1070.5 58.9 70.4 30.2 38.8 82.5 161.3 171.1 79.6 30.0 19.9 30.1 1116.2

CV (%)

 123.1 76.7 77.1 73.5 69.1 45.0 36.4 29.5 38.8 167.8 140.5 176.9 43.0

Seasonal Rainfall Normals (mm)

 Parameter  

SW MONSOON (Jun-Sep)

NE MONSOON (Oct-Dec)

WINTER (Jan-Feb)

HOT WEATHER (Mar-May)

Average

 1412.1 49.1 946.3 188.6

Lowest

939.0 14.0 59.0 89.0

Highest

 1929.0 193.0 2394.0 393.0

SD

 319.6 56.6 1081.4 84.5

CV (%)

 22.6 115.2 114.3 44.8

Normal Rainy Days

 Parameter  

SW MONSOON (Jun-Sep)

NE MONSOON (Oct-Dec)

WINTER (Jan-Feb)

HOT WEATHER (Mar-May)

ANNUAL (Jan-Dec)

Average

 61.0 4.0 9.6 14.0 89.0

Lowest

54.0 1.0 4.0 7.0 70.0

Highest

 72.0 14.0 16.0 19.0 101.0

SD

 6.3 3.8 3.4 5.4 12.7

CV

 10.4 94.3 35.8 38.3 14.3

 

Weekly Rainfall Probability (%) for different amounts

WEEK Upto 10mm 20mm 30mm 40mm 50mm 75mm 100mm >100mm
1 70 50 40 40 40 40 40 40
2 40 30 30 20 20 20 10 0
3 70 50 40 40 20 10 0 0
4 60 50 50 20 20 10 0 0
5 30 30 10 10 10 10 0 0
6 70 50 30 30 10 10 10 10
7 90 70 50 30 30 20 10 0
8 70 50 20 20 20 20 0 0
9 60 50 50 50 30 10 10 0
10 70 30 10 0 0 0 0 0
11 70 70 50 30 30 10 10 10
12 80 70 40 30 30 20 10 10
13 70 40 30 10 0 0 0 0
14 30 30 30 10 0 0 0 0
15 70 40 20 10 10 0 0 0
16 50 40 20 10 10 10 0 0
17 60 40 10 0 0 0 0 0
18 70 20 10 0 0 0 0 0
19 70 40 30 10 0 0 0 0
20 70 50 30 20 20 20 0 0
21 60 50 20 20 10 0 0 0
22 80 50 10 10 10 10 10 0
23 90 70 40 30 20 20 0 0
24 100 90 80 60 50 50 10 10
25 100 90 70 60 40 40 20 10
26 90 90 80 70 70 70 30 20
27 100 100 100 90 90 80 30 20
28 100 100 90 90 70 70 50 40
29 100 100 90 90 80 70 70 70
30 100 100 100 100 100 90 70 40
31 100 100 100 100 100 90 80 40
32 100 100 100 100 100 100 90 80
33 90 90 90 90 80 80 70 60
34 100 100 100 100 100 100 80 60
35 100 100 100 100 90 90 60 60
36 100 100 90 90 70 60 40 40
37 100 90 90 80 80 70 20 10
38 80 50 40 40 30 20 20 20
39 60 30 20 20 20 10 0 0
40 40 30 10 0 0 0 0 0
41 10 10 0 0 0 0 0 0
42 10 10 10 10 10 10 10 0
43 10 10 0 0 0 0 0 0
44 20 0 0 0 0 0 0 0
45 50 20 20 10 0 0 0 0
46 20 0 0 0 0 0 0 0
47 10 10 0 0 0 0 0 0
48 10 10 10 10 0 0 0 0
49 0 0 0 0 0 0 0 0
50 20 20 10 10 10 10 0 0
51 20 10 10 10 0 0 0 0
52 30 20 10 0 0 0 0 0

 

Weekly Rainfall values at different Probability levels

 WEEK

PRECIPITATION (mm) FOR THE PROBABILITIES(%)
90 75 50 25 10
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ANN          

 

 Crop Season Rainfall Characteristics

Mean start, end, duration and rainfall during the season

 MEAN START = 27*

As Early As = 26*

As Late As = 28*

 STD.DEV = 0.8

 MEAN END = 50*

As Early As = 40*

As Late As = 52*

STD.DEV = 4.4

 MEAN DUR = 19*

MIN DUR = 13*

MAX DUR = 24*

STD.DEV = 4.1

MEAN CSR** = 1293mm

MIN CSR** = 827mm

MAX CSR** = 1739mm

STD.DEV = 301.3mm

                    * Standard Meteorological Week          

                    ** Crop Season Rainfall (CSR)

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