Blackfield Weather
Temperature (°C) (Maximum)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 13.3 14.3 18.0 18.0 22.5 24.0 - - - - - - 18.35
2020 12.3 14.1 15.1 24.1 26.4 29.0 28.7 34.1 27.8 18.7 16.2 12.8 21.60
2019 12.6 17.3 18.8 26.3 22.9 28.6 27.7 30.5 24.9 18.9 15.1 12.2 21.32
2018 - - 14.4 25.7 28.7 29.1 31.7 31.7 24.9 24.4 24.4 16.4 25.14
Av: 12.7 15.2 16.6 23.5 25.1 27.7 29.4 32.1 25.9 20.7 18.6 13.8 21.60
Temperature (°C) (Minimum)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 -3.4 -3.2 -3.8 -1.9 -0.1 8.3 - - - - - - -0.68
2020 -2.6 0.0 0.3 0.9 3.1 6.9 7.9 8.1 4.5 4.5 0.2 -2.7 2.60
2019 -5.2 -4.6 0.7 0.2 2.1 6.1 10.4 9.1 6.1 1.4 -1.8 -1.9 1.87
2018 - - -4.3 4.1 2.4 8.7 11.4 7.3 2.4 -1.1 -0.5 -0.7 2.97
Av: -3.7 -2.6 -1.8 0.8 1.9 7.5 9.9 8.1 4.3 1.6 -0.7 -1.8 1.69
Temperature (°C) (Average)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 4.8 6.2 7.8 7.8 11.5 16.3 - - - - - - 9.07
2020 7.4 7.9 7.8 11.8 14.1 16.3 17.3 19.1 15.7 11.9 10.2 6.5 12.17
2019 5.0 7.1 9.1 10.6 12.9 15.8 19.9 17.9 15.8 12.1 7.8 7.3 11.77
2018 - - 6.0 10.6 14.9 17.8 20.7 18.0 15.1 11.6 11.7 9.3 13.58
Av: 5.7 7.1 7.7 10.2 13.4 16.6 19.3 18.3 15.5 11.9 9.9 7.7 11.65
Frost Days
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 11 8 3 6 1 0 - - - - - - 29
2020 5 1 0 0 0 0 0 0 0 0 0 5 11
2019 14 2 0 0 0 0 0 0 0 0 3 4 23
2018 - - 6 0 0 0 0 0 0 2 1 1 10
Av: 10 4 2 2 0 0 0 0 0 1 1 3 18
Windchill (°C) (Maximum)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 13.3 14.1 18.0 18.0 22.5 24.0 - - - - - - 18.31
2020 12.2 13.1 14.9 24.1 26.4 29.0 28.7 34.1 27.8 18.7 15.5 12.5 21.40
2019 - - - - - - - 30.5 24.9 18.9 14.8 11.9 20.21
2018 - - - - - - - - - - - - -
Av: 12.7 13.6 16.4 21.0 24.4 26.5 28.7 32.3 26.4 18.8 15.2 12.2 19.97
Windchill (°C) (Minimum)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 -4.9 -7.2 -3.8 -2.9 -0.1 8.3 - - - - - - -1.75
2020 -2.6 -2.9 -1.9 0.6 1.4 5.3 7.9 8.1 3.5 4.5 0.2 -4.3 1.66
2019 - - - - - - - 9.1 6.1 1.4 -1.8 -3.3 2.28
2018 - - - - - - - - - - - - -
Av: -3.7 -5.1 -2.8 -1.1 0.7 6.8 7.9 8.6 4.8 2.9 -0.8 -3.8 0.73
Windchill (°C) (Average)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 3.6 4.8 6.7 7.2 11.0 16.3 - - - - - - 8.28
2020 6.6 6.0 6.5 11.5 13.9 16.1 17.2 19.0 15.6 11.4 9.7 5.6 11.58
2019 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17.8 15.6 11.7 7.2 6.3 4.89
2018 - - 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.00
Av: 3.4 3.6 3.3 4.7 6.2 8.1 5.7 12.3 10.4 7.7 5.6 4.0 6.19
Heat Index(°C) (Maximum)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 13.3 14.3 18.0 18.0 22.5 24.0 - - - - - - 18.35
2020 12.3 14.1 15.1 24.1 26.4 29.0 29.1 36.1 28.5 18.7 16.2 12.8 21.86
2019 12.6 17.3 18.8 26.3 22.9 30.0 29.7 32.6 24.9 18.9 15.1 12.2 21.78
2018 - - 14.4 25.7 28.7 29.1 32.1 32.6 24.9 24.4 24.4 16.4 25.27
Av: 12.7 15.2 16.6 23.5 25.1 28.0 30.3 33.8 26.1 20.7 18.6 13.8 21.81
Heat Index(°C) (Average)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 4.8 6.2 7.7 7.8 11.5 16.3 - - - - - - 9.06
2020 7.4 7.9 7.8 11.8 14.1 16.3 17.3 19.2 15.7 11.9 10.2 6.5 12.17
2019 5.0 7.1 9.1 10.6 12.9 15.8 19.9 17.9 15.8 12.1 7.8 7.3 11.77
2018 - - 6.0 10.6 14.9 17.8 20.7 18.0 15.1 11.6 11.7 9.3 13.58
Av: 5.7 7.1 7.6 10.2 13.4 16.6 19.3 18.4 15.5 11.9 9.9 7.7 11.65
Wind Speed (Knots) (Maximum)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 47.8 44.0 44.0 36.3 47.8 28.7 - - - - - - 41.42
2020 49.7 61.2 42.1 36.3 38.2 40.1 44.0 47.8 42.1 40.1 47.8 63.1 46.04
2019 44.0 45.9 61.2 42.1 34.4 44.0 28.6 58.7 45.9 40.1 47.8 47.8 45.03
2018 - - 40.2 36.3 32.4 30.5 36.3 44.0 45.9 34.4 34.4 42.1 37.66
Av: 47.2 50.3 46.8 37.8 38.2 35.8 36.3 50.1 44.6 38.2 43.3 51.0 42.54
Wind Speed (Knots) (Average)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 3.6 3.9 4.1 2.9 3.6 1.6 - - - - - - 3.30
2020 3.4 7.2 5.1 2.5 3.2 3.3 3.8 3.2 2.4 3.5 2.9 3.1 3.64
2019 3.0 3.2 5.1 3.0 2.5 3.0 2.9 3.4 3.7 3.3 2.6 3.8 3.28
2018 - - 3.6 3.6 2.2 2.5 2.2 2.2 3.1 2.5 2.6 2.7 2.71
Av: 3.3 4.8 4.5 3.0 2.9 2.6 3.0 2.9 3.1 3.1 2.7 3.2 3.23
Wind Direction (Degrees) (Average)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 188 142 166 152 183 194 - - - - - - 170.8
2020 190 206 158 128 157 185 238 209 208 204 173 214 189.0
2019 237 186 221 140 212 189 122 214 202 190 181 197 190.8
2018 - - 172 176 181 174 207 229 206 205 207 146 190.2
Av: 205 178 179 149 183 186 189 217 205 199 187 186 185.2
Wind Run(NM's)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 3,518.3 3,481.1 3,949.5 2,702.6 3,541.8 636.7 - - - - - - 17,830.1
2020 3,340.7 6,509.0 4,955.0 2,355.3 3,085.2 3,089.6 3,609.9 3,161.6 2,253.8 3,429.7 2,735.9 3,049.7 41,575.6
2019 2,837.1 2,749.1 5,090.2 2,856.5 2,445.7 2,876.1 2,444.5 3,215.0 3,457.3 3,133.9 2,435.4 3,613.0 37,153.9
2018 - - 3,398.3 3,375.8 2,146.8 2,380.3 2,273.2 2,271.4 2,969.8 2,399.3 2,345.8 2,551.0 26,111.6
Av: 3,232.1 4,246.4 4,348.3 2,822.6 2,804.9 2,245.7 2,775.9 2,882.7 2,893.6 2,987.6 2,505.7 3,071.2 30,667.8
Pressure (hPa) (Maximum)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 1,032.3 1,042.2 1,035.2 1,034.3 1,028.5 1,028.0 - - - - - - 1,033.42
2020 1,050.3 1,038.9 1,039.8 1,030.3 1,036.9 1,027.2 1,029.4 1,022.9 1,028.3 1,027.8 1,040.5 1,033.9 1,033.84
2019 1,044.3 1,036.7 1,037.2 1,030.1 1,039.9 1,027.6 1,027.0 1,028.3 1,035.5 1,026.3 1,021.8 1,037.5 1,032.70
2018 - - 1,034.1 1,028.2 1,027.6 1,031.2 1,026.6 1,024.5 1,039.3 1,038.4 1,038.4 1,028.9 1,031.72
Av: 1,042.3 1,039.3 1,036.6 1,030.7 1,033.2 1,028.5 1,027.7 1,025.3 1,034.4 1,030.8 1,033.6 1,033.4 1,032.92
Pressure (hPa) (Minimum)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 975.7 990.7 992.8 1,004.1 995.5 1,010.9 - - - - - - 994.93
2020 991.3 982.7 983.9 993.4 997.9 997.5 1,005.3 998.9 993.0 979.9 994.1 969.7 990.63
2019 980.9 981.2 986.1 990.8 991.7 997.0 1,007.2 998.5 995.0 997.9 978.2 969.9 989.53
2018 - - 982.9 991.6 1,002.8 1,010.8 1,002.8 1,004.4 999.0 995.7 995.7 991.2 997.69
Av: 982.6 984.9 986.4 995.0 997.0 1,004.0 1,005.1 1,000.6 995.7 991.2 989.3 976.9 993.20
Pressure (hPa) (Average)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Av.
2021 1,012.0 1,015.0 1,022.9 1,023.0 1,011.1 1,021.7 - - - - - - 1,017.64
2020 1,020.7 1,012.4 1,017.2 1,017.0 1,021.9 1,013.0 1,017.6 1,012.9 1,017.4 1,008.9 1,020.0 1,003.6 1,015.22
2019 1,019.0 1,020.2 1,017.4 1,013.0 1,017.2 1,014.5 1,016.4 1,015.1 1,018.2 1,011.6 1,001.2 1,010.2 1,014.49
2018 - - 1,001.4 1,010.6 1,017.7 1,019.5 1,016.5 1,017.3 1,021.4 1,018.4 1,018.8 1,011.3 1,015.29
Av: 1,017.2 1,015.9 1,014.7 1,015.9 1,017.0 1,017.2 1,016.8 1,015.1 1,019.0 1,013.0 1,013.3 1,008.4 1,015.66
Precipitation (mm) (Total)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 103.0 69.6 40.0 8.2 91.4 2.4 - - - - - - 314.6
2020 131.4 170.8 67.0 63.8 2.4 62.8 47.0 99.6 52.4 194.4 88.6 146.4 1,126.6
2019 33.0 98.4 87.6 29.6 15.8 96.6 33.8 92.2 134.4 156.6 133.8 168.6 1,080.4
2018 - - 150.6 98.2 51.0 1.8 34.0 110.2 46.4 66.8 66.8 153.8 779.6
Av: 89.1 112.9 86.3 50.0 40.1 40.9 38.3 100.7 77.7 139.3 96.4 156.3 825.3
Rain Days (>0.50 mm)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 15 15 8 4 15 2 - - - - - - 59
2020 16 20 12 5 2 10 10 15 6 20 10 19 145
2019 9 11 14 6 5 11 6 12 11 22 20 18 145
2018 - - 23 14 11 1 3 9 5 8 8 16 98
Av: 13 15 14 7 8 6 6 12 7 17 13 18 112
Snow (mm) (Total)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 0.0 4.7 0.0 0.1 0.0 0.0 - - - - - - 4.8
2020 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1
2019 5.1 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10.1
2018 - - 90.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 90.0
Av: 1.7 3.2 22.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26.3
Snow Days
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 0 3 0 4 0 0 - - - - - - 7
2020 0 0 0 0 0 0 0 0 0 0 0 1 1
2019 2 0 0 0 0 0 0 0 0 0 0 0 2
2018 - - 2 0 0 0 0 0 0 0 0 0 2
Av: 1 1 1 1 0 0 0 0 0 0 0 0 3
Warm Days (Tmax > 20C)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 0 0 0 0 4 11 - - - - - - 15
2020 0 0 0 7 13 16 26 26 19 0 0 0 107
2019 0 0 0 5 5 12 26 28 14 0 0 0 90
2018 - - 0 2 17 25 29 24 16 3 3 0 119
Av: 0 0 0 4 10 16 27 26 16 1 1 0 83
Summery Days (Tmax > 25C)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 0 0 0 0 0 0 - - - - - - 0
2020 0 0 0 0 3 4 3 8 4 0 0 0 22
2019 0 0 0 2 0 5 6 5 0 0 0 0 18
2018 - - 0 1 4 10 23 6 0 0 0 0 44
Av: 0 0 0 1 2 5 11 6 1 0 0 0 21
Tropical Days( Tmax > 30C)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 0 0 0 0 0 0 - - - - - - 0
2020 0 0 0 0 0 0 0 4 0 0 0 0 4
2019 0 0 0 0 0 0 0 1 0 0 0 0 1
2018 - - 0 0 0 0 5 1 0 0 0 0 6
Av: 0 0 0 0 0 0 2 2 0 0 0 0 3
Calm Days (Wind run <=40nm)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 8 6 5 7 3 6 - - - - - - 35
2020 9 1 1 8 6 7 0 8 9 2 10 8 69
2019 5 8 6 3 5 3 6 6 4 7 11 10 74
2018 - - 2 2 13 7 4 6 5 9 9 4 61
Av: 7 5 4 5 7 6 3 7 6 6 10 7 60
Windy Days (wind run >200nm)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 4 5 7 1 3 0 - - - - - - 20
2020 3 16 9 0 3 2 3 5 2 3 3 3 52
2019 2 4 11 2 0 2 0 2 6 3 2 7 41
2018 - - 1 1 0 1 1 0 5 0 0 2 11
Av: 3 8 7 1 2 1 1 2 4 2 2 4 31
Days with Gales
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 2 2 5 0 4 0 - - - - - - 13
2020 3 10 2 0 0 1 1 3 2 4 4 3 33
2019 1 2 8 1 0 1 0 1 1 1 1 5 22
2018 - - 3 0 0 0 0 1 2 0 0 1 7
Av: 2 5 5 0 1 1 0 2 2 2 2 3 19
Wash-out days (precipitation > 10mm)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 3 2 1 0 4 0 - - - - - - 10
2020 5 7 2 3 0 1 2 4 3 6 3 4 40
2019 1 3 3 1 1 4 0 3 4 5 6 7 38
2018 - - 6 4 1 0 1 2 2 1 1 6 24
Av: 3 4 3 2 2 1 1 3 3 4 3 6 28
Days with Ground Frost
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 15 11 8 13 3 0 - - - - - - 50
2020 6 6 4 1 0 0 0 0 0 0 3 13 33
2019 17 8 3 3 0 0 0 0 0 1 7 11 50
2018 - - 11 0 0 0 0 0 0 3 2 6 22
Av: 13 8 7 4 1 0 0 0 0 1 4 10 39
Muggy (Humid) Days (Td > 17C)
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual Tot.
2021 0 0 0 0 0 2 - - - - - - 2
2020 0 0 0 0 0 1 7 20 6 0 0 0 34
2019 0 0 0 0 0 5 8 15 5 0 0 0 33
2018 - - 0 0 5 4 19 16 6 2 2 0 54
Av: 0 0 0 0 1 3 11 17 6 1 1 0 31
ANNUAL CLIMATOLOGICAL SUMMARY FOR 2021
NAME: Blackfield Weather
ELEV: 25.0 Metres LAT: 050° 48' 33" N LONG: 001° 22' 01" W
TEMPERATURE (°C), HEAT BASE 18.3, COOL BASE 18.3
DEP HEAT COOL
MEAN MEAN FROM DEG DEG MAX MAX MIN MIN
YR MO MAX MIN MEAN NORM DAYS DAYS HI DATE LOW DATE >=32 <=0 <=0 <=-17
--------------------------------------------------------------------------------------
21 1 7.3 2.1 4.8 -0.9 418 0 13.3 28 -3.4 24 0 0 11 0
21 2 9.0 3.1 6.2 -0.9 341 0 14.3 24 -3.2 11 0 0 8 0
21 3 11.9 3.7 7.8 0.1 327 0 18.0 30 -3.8 8 0 0 3 0
21 4 13.3 2.5 7.8 -2.4 315 0 18.0 27 -1.9 7 0 0 6 0
21 5 16.1 6.8 11.5 -1.9 216 3 22.5 31 -0.1 6 0 0 1 0
21 6 21.4 11.7 16.3 -0.3 33 8 24.0 12 8.3 9 0 0 0 0
--------------------------------------------------------------------------------------
13.2 5.0 9.1 -1.0 1,649 11 24.0 6 -3.8 3 0 0 29 0
PRECIPITATION (mm)
DEP. MAX DAYS OF RAIN
FROM OBS. OVER
YR MO TOTAL NORM DAY DATE 0.2 2 20
---------------------------------------------
21 1 103.00 13.87 15.40 30 21 13 0
21 2 69.60 -43.33 12.40 14 17 10 0
21 3 40.00 -46.30 11.20 10 12 5 0
21 4 8.20 -41.75 4.60 30 5 1 0
21 5 91.40 51.25 16.80 15 19 7 0
21 6 2.40 -38.50 1.60 4 2 0 0
---------------------------------------------
314.60 -5.51 16.80 5 76 36 0
WIND SPEED (Knots)
DOM
YR MO AVG. HI DATE DIR
----------------------------
21 1 3.6 47.8 20 N
21 2 4.0 44.0 9 ESE
21 3 4.1 44.0 11 SE
21 4 2.9 36.3 23 ESE
21 5 3.6 47.8 21 SE
21 6 1.7 28.7 1 ESE
----------------------------
3.3 47.8 1 ESE
ANNUAL CLIMATOLOGICAL SUMMARY FOR 2020
NAME: Blackfield Weather
ELEV: 25.0 Metres LAT: 050° 48' 33" N LONG: 001° 22' 01" W
TEMPERATURE (°C), HEAT BASE 18.3, COOL BASE 18.3
DEP HEAT COOL
MEAN MEAN FROM DEG DEG MAX MAX MIN MIN
YR MO MAX MIN MEAN NORM DAYS DAYS HI DATE LOW DATE >=32 <=0 <=0 <=-17
--------------------------------------------------------------------------------------
20 1 9.7 4.7 7.4 1.7 340 0 12.3 16 -2.6 21 0 0 5 0
20 2 10.8 4.8 7.9 0.8 302 0 14.1 23 0.0 6 0 0 1 0
20 3 11.6 4.6 7.8 0.2 325 0 15.1 26 0.3 6 0 0 0 0
20 4 17.4 6.7 11.8 1.6 201 6 24.1 23 0.9 1 0 0 0 0
20 5 19.9 8.3 14.1 0.8 150 20 26.4 26 3.1 15 0 0 0 0
20 6 20.8 12.1 16.3 -0.3 87 25 29.0 25 6.9 6 0 0 0 0
20 7 21.9 12.7 17.3 -2.0 61 29 28.7 31 7.9 29 0 0 0 0
20 8 23.8 15.1 19.1 0.8 38 63 34.1 11 8.1 31 4 0 0 0
20 9 21.1 10.8 15.7 0.2 101 22 27.8 15 4.5 28 0 0 0 0
20 10 15.2 8.6 11.9 0.0 201 0 18.7 20 4.5 10 0 0 0 0
20 11 12.8 6.9 10.2 0.3 245 0 16.2 2 0.2 4 0 0 0 0
20 12 8.9 3.6 6.5 -1.2 367 0 12.8 22 -2.7 8 0 0 5 0
--------------------------------------------------------------------------------------
16.1 8.2 12.2 0.2 2,417 165 34.1 8 -2.7 12 4 0 11 0
PRECIPITATION (mm)
DEP. MAX DAYS OF RAIN
FROM OBS. OVER
YR MO TOTAL NORM DAY DATE 0.2 2 20
---------------------------------------------
20 1 131.40 42.27 21.00 14 22 13 1
20 2 170.80 57.87 28.20 16 22 18 1
20 3 67.00 -19.30 21.40 5 14 8 1
20 4 63.80 13.85 18.00 17 6 5 0
20 5 2.40 -37.75 1.40 4 2 0 0
20 6 62.80 21.90 18.60 11 15 7 0
20 7 46.60 8.33 16.60 25 11 5 0
20 8 99.60 -1.07 33.80 19 15 10 1
20 9 52.40 -25.33 18.40 24 13 4 0
20 10 194.40 55.13 39.40 2 23 17 2
20 11 88.60 -7.80 26.40 14 21 8 1
20 12 146.40 -9.87 20.60 27 23 18 1
---------------------------------------------
1,126.20 3.17 39.40 10 187 113 8
WIND SPEED (Knots)
DOM
YR MO AVG. HI DATE DIR
----------------------------
20 1 3.4 49.7 14 SE
20 2 7.2 61.2 10 SE
20 3 5.2 42.1 29 N
20 4 2.5 36.3 20 ESE
20 5 3.2 38.2 10 E
20 6 3.3 40.1 28 W
20 7 3.8 44.0 5 W
20 8 3.2 47.8 21 W
20 9 2.4 42.1 24 W
20 10 3.5 40.1 24 W
20 11 2.9 47.8 15 ESE
20 12 3.1 63.1 27 SE
----------------------------
3.6 63.1 12 S