Canadian Climate Normals 1971-2000 Station Data

The minimum number of years used to calculate these Normals is indicated by a code for each element. A "+" beside an extreme date indicates that this date is the first occurrence of the extreme value. Values and dates in bold indicate all-time extremes for the location.

Data used in the calculation of these Normals may be subject to further quality assurance checks. This may result in minor changes to some values presented here.

Metadata including Station Name, Province, Latitude, Longitude, Elevation, Climate ID, WMO ID, TC ID
LYTTON
BRITISH COLUMBIA
Latitude: 50°14'00.000" N Longitude: 121°35'00.000" W Elevation: 229.00 m
Climate ID: 1114741 WMO ID: TC ID:
Temperature
1971 to 2000 Canadian Climate Normals station data
Temperature
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
Daily Average (°C) -2.4 1.2 5.7 10.1 14.3 18.1 21.4 21.4 16.2 10.0 2.8 -1.8 9.7 C
Standard Deviation 3.4 2.9 1.5 1.3 1.0 1.6 1.5 1.7 1.7 1.1 3.0 3.3 0.8 C
Daily Maximum (°C) 0.6 4.9 10.7 16.1 20.4 24.1 28.1 28.1 22.5 14.9 5.8 1.2 14.8 C
Daily Minimum (°C) -5.5 -2.6 0.7 4.0 8.2 12.1 14.6 14.6 9.9 5.1 -0.3 -4.7 4.7 C
Extreme Maximum (°C) 15.0 16.4 23.7 33.1 40.4 39.1 42.2 41.5 38.7 29.9 20.0 17.8
Date
(yyyy/dd)
1971/ 30 1986/ 28 1991/ 31 1977/ 24 1983/ 29 1987/ 29 1971/ 31 1981/ 09 1988/ 03 1980/ 06 1975/ 04 1976/ 15
Extreme Minimum (°C) -23.7 -22.5 -20.0 -4.4 0.8 4.4 6.1 7.4 -2.2 -18.1 -27.7 -27.1
Date
(yyyy/dd)
1982/ 06 1989/ 01 1976/ 03 1975/ 06 1978/ 06 1976/ 04 1971/ 06 1980/ 29 1972/ 27 1984/ 31 1985/ 27 1984/ 31
Precipitation
1971 to 2000 Canadian Climate Normals station data
Precipitation
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
Rainfall (mm) 35.1 28.0 26.4 18.8 18.2 18.8 14.4 22.9 27.3 36.4 49.1 43.3 338.7 C
Snowfall (cm) 39 23 7 1 0 0 0 0 0 1 18 29 117 C
Precipitation (mm) 64.1 45.2 32.7 19.3 18.2 18.8 14.4 22.9 27.3 37.2 65.4 67.0 432.4 C
Average Snow Depth (cm) 8 3 1 0 0 0 0 0 0 0 2 4 1 C
Median Snow Depth (cm) 7 2 0 0 0 0 0 0 0 0 1 3 1 C
Snow Depth at Month-end (cm) 4 5 0 0 0 0 0 0 0 0 3 5 1 C
Extreme Daily Rainfall (mm) 60.5 38.4 26.1 29.4 20.1 31.2 34.3 22.4 27.9 46.0 43.2 36.6
Date
(yyyy/dd)
1974/ 15 1991/ 01 1989/ 09 1991/ 03 1980/ 15 1980/ 04 1971/ 06 1991/ 29 1972/ 21 1982/ 22 1990/ 12 1982/ 03
Extreme Daily Snowfall (cm) 55 39 22 3 0 0 0 0 0 7 39 34
Date
(yyyy/dd)
1971/ 15 1972/ 28 1991/ 02 1972/ 08 1970/ 01 1970/ 01 1970/ 01 1970/ 01 1970/ 01 1984/ 30 1980/ 29 1971/ 22
Extreme Daily Precipitation (mm) 60.5 38.4 32.0 29.4 20.1 31.2 34.3 22.4 27.9 46.0 43.2 37.4
Date
(yyyy/dd)
1974/ 15 1991/ 01 1972/ 05 1991/ 03 1980/ 15 1980/ 04 1971/ 06 1991/ 29 1972/ 21 1982/ 22 1990/ 12 1982/ 16
Extreme Snow Depth (cm) 71 48 51 0 0 0 0 0 0 3 41 64
Date
(yyyy/dd)
1971/ 17 1972/ 29 1972/ 01 1970/ 12 1970/ 01 1970/ 01 1970/ 01 1970/ 01 1970/ 01 1984/ 31 1973/ 21 1971/ 24
Days with Maximum Temperature
1971 to 2000 Canadian Climate Normals station data
Days with Maximum Temperature
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
<= 0 °C 12.2 5.0 0.6 0.0 0.0 0.0 0.0 0.0 0.1 0.1 3.7 12.1 33.7 C
> 0 °C 18.8 23.2 30.4 30.0 31.0 30.0 31.0 31.0 30.0 31.0 26.4 18.9 331.6 C
> 10 °C 1.2 4.5 18.0 27.0 30.8 30.0 31.0 31.0 29.8 26.7 5.8 1.4 237.0 C
> 20 °C 0.0 0.0 0.4 6.9 14.1 21.4 28.7 28.2 19.0 4.6 0.0 0.0 123.1 C
> 30 °C 0.0 0.0 0.0 0.1 1.3 4.4 12.1 12.3 2.9 0.0 0.0 0.0 33.2 C
> 35 °C 0.0 0.0 0.0 0.0 0.2 0.8 3.7 3.5 0.2 0.0 0.0 0.0 8.4 C
Days with Minimum Temperature
1971 to 2000 Canadian Climate Normals station data
Days with Minimum Temperature
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
> 0 °C 6.5 9.8 18.0 26.8 31.0 30.0 31.0 31.0 29.9 27.3 15.4 8.2 264.7 C
<= 2 °C 27.8 22.5 19.2 8.5 0.3 0.0 0.0 0.0 0.7 7.5 19.3 27.3 133.1 C
<= 0 °C 24.5 18.5 13.0 3.2 0.0 0.0 0.0 0.0 0.2 3.7 14.7 22.9 100.6 C
< -2 °C 19.8 12.6 6.3 1.0 0.0 0.0 0.0 0.0 0.1 1.1 9.3 18.9 68.9 C
< -10 °C 7.4 3.3 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.1 1.6 5.3 18.2 C
< -20 °C 0.7 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 1.0 2.1 C
< - 30 °C 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 C
Days with Rainfall
1971 to 2000 Canadian Climate Normals station data
Days with Rainfall
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
>= 0.2 mm 6 7.9 8.8 6.8 7.4 7 5.1 6.4 7.3 9.5 10.4 7.3 89.7 C
>= 5 mm 1.8 1.8 1.5 1.1 0.95 1.2 0.86 1.4 1.8 2.5 2.9 2.6 20.4 C
>= 10 mm 1 0.71 0.67 0.33 0.24 0.38 0.14 0.57 0.75 0.95 1.3 1.4 8.4 C
>= 25 mm 0.30 0.14 0.19 0.05 0 0.05 0.05 0.05 0.05 0.05 0.25 0.30 1.5 C
Days With Snowfall
1971 to 2000 Canadian Climate Normals station data
Days With Snowfall
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
>= 0.2 cm 7.5 4.7 2.6 0.33 0 0 0 0 0 0.40 4 8.3 27.7 C
>= 5 cm 2.3 1.2 0.38 0 0 0 0 0 0 0.10 0.90 1.7 6.6 C
>= 10 cm 1.3 0.71 0.14 0 0 0 0 0 0 0 0.60 0.65 3.4 C
>= 25 cm 0.15 0.19 0 0 0 0 0 0 0 0 0.15 0.10 0.59 C
Days with Precipitation
1971 to 2000 Canadian Climate Normals station data
Days with Precipitation
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
>= 0.2 mm 11.7 11.1 9.8 6.9 7.4 7.0 5.1 6.4 7.3 9.7 12.7 13.4 108.3 C
>= 5 mm 3.8 2.8 2.1 1.1 1.0 1.2 0.9 1.4 1.8 2.5 3.9 3.9 26.2 C
>= 10 mm 1.7 1.3 0.8 0.3 0.2 0.4 0.1 0.6 0.8 1.0 1.8 2.0 11.0 C
>= 25 mm 0.5 0.2 0.2 0.1 0.0 0.1 0.1 0.1 0.1 0.1 0.4 0.6 2.0 C
Days with Snow Depth
1971 to 2000 Canadian Climate Normals station data
Days with Snow Depth
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
>= 1 cm 14.6 8.5 2 0 0 0 0 0 0 0.15 3.5 12.7 41.4 D
>= 5 cm 10.5 5.5 1.6 0 0 0 0 0 0 0 2.3 8 27.9 D
>= 10 cm 8.4 3.6 1.4 0 0 0 0 0 0 0 1.9 5.4 20.6 D
>= 20 cm 5.1 1.2 0.67 0 0 0 0 0 0 0 1.3 1.8 10.1 D
Wind
1971 to 2000 Canadian Climate Normals station data
Wind
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
Maximum Hourly Speed (km/h) 63 63 56 59 74 80 81 69 56 59 65 65
Date
(yyyy/dd)
1989/ 30 1976/ 08 1977/ 05 1990/ 19 1991/ 20 1979/ 29 1991/ 24 1991/ 26 1989/ 26 1989/ 18 1990/ 12 1977/ 11
Direction of Maximum Hourly Speed S S S S S S S S S S S S
Date
(yyyy/dd)
1989/ 30 1976/ 08 1977/ 05 1990/ 19 1991/ 20 1979/ 29 1991/ 24 1991/ 26 1989/ 26 1989/ 18 1990/ 12 1977/ 11
Maximum Gust Speed (km/h) 97 72 89 74 74 79 77 92 87 85 87 84
Date
(yyyy/dd)
1971/ 07 1970/ 02 1970/ 07 1970/ 03 1972/ 10 1970/ 27 1970/ 16 1970/ 25 1970/ 02 1970/ 17 1971/ 21 1972/ 19
Direction of Maximum Gust S S S S S S S S S S S S
Date
(yyyy/dd)
1971/ 07 1970/ 02 1970/ 07 1970/ 03 1972/ 10 1970/ 27 1970/ 16 1970/ 25 1970/ 02 1970/ 17 1971/ 21 1972/ 19
Degree Days
1971 to 2000 Canadian Climate Normals station data
Degree Days
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
Above 24 °C 0 0 0 0 0.3 2.4 17 16.3 0.6 0 0 0 36.6 C
Above 18 °C 0 0 0 0.3 8.9 46.1 115.6 114.7 23 0.6 0 0 309.1 C
Above 15 °C 0 0 0 3 31.7 103.2 198.8 197.9 66.4 5.2 0.2 0 606.2 C
Above 10 °C 0.2 0 2.5 41.1 136.9 243 352.2 352.1 189.5 46.5 3.5 0.3 1367.7 C
Above 5 °C 6.1 12 51.8 152.7 289.3 393 507.2 507.1 337.4 160.5 28.9 6 2,452 C
Above 0 °C 45.8 82.8 184 301.6 444.3 543 662.2 662.1 487.1 311.1 114.4 49.8 3888.2 C
Below 0 °C 121.2 49.3 6.2 0 0 0 0 0 0 1.2 31.3 104.6 313.7 C
Below 5 °C 236.5 119.7 29 1.1 0 0 0 0 0.3 5.6 95.8 215.8 703.8 C
Below 10 °C 385.5 249 134.6 39.5 2.6 0 0 0 2.4 46.6 220.4 365.1 1445.7 C
Below 15 °C 540.3 390.2 287.2 151.3 52.4 10.3 1.6 0.7 29.3 160.2 367.1 519.8 2510.3 C
Below 18 °C 633.3 474.9 380.2 238.6 122.6 43.1 11.4 10.6 75.9 248.7 456.9 612.8 3308.9 C
Bright Sunshine
1971 to 2000 Canadian Climate Normals station data
Bright Sunshine
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
Total Hours 58.7 83.1 143.7 196.0 238.2 255.0 280.3 240.7 183.6 129.0 60.4 46.6 1915.3 C
Days with measureable 21.0 22.8 28.6 28.9 30.2 29.4 30.6 30.7 29.0 28.4 21.1 19.4 319.9 C
% of possible daylight hours 22.1 29.3 39.1 47.5 49.8 52.1 56.8 53.6 48.3 38.6 22.2 18.5 39.8 C
Extreme Daily 5.6 7.8 9.2 10.7 12.4 12.8 12.8 11.3 9.8 7.7 6.0 4.8 C
Date
(yyyy/dd)
1983/ 31 1989/ 26 1974/ 31 1977/ 30 1972/ 30 1974/ 19 1975/ 01 1973/ 01 1988/ 01 1972/ 01 1978/ 01 1971/ 06
Humidex
1971 to 2000 Canadian Climate Normals station data
Humidex
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
Extreme Humidex 14.4 15.8 22.9 32.5 39.9 41.1 46.3 41.6 38.7 29.4 20.4 17.8
Date
(yyyy/dd)
1971/ 30 1988/ 27 1991/ 31 1977/ 24 1983/ 29 1977/ 17 1990/ 10 1972/ 07 1988/ 03 1980/ 06 1975/ 04 1976/ 15
Wind Chill
1971 to 2000 Canadian Climate Normals station data
Wind Chill
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
Extreme Wind Chill -36 -33 -26 -5 -2 3 5 7 -4 -25 -41 -37
Date
(yyyy/dd)
1972/ 27 1989/ 01 1976/ 03 1982/ 19 1970/ 10 1981/ 13 1971/ 06 1975/ 23 1972/ 27 1984/ 31 1985/ 27 1984/ 31
Humidity
1971 to 2000 Canadian Climate Normals station data
Humidity
  JanFebMarAprMayJunJulAugSepOctNovDecYear Code
Average Relative Humidity - 0600LST (%) 81.5 81 81 77.4 74.1 69.3 68.7 71.6 79.6 82.1 83.8 82.9 77.8 C
Average Relative Humidity - 1500LST (%) 70.9 62.9 49.4 38.7 37.2 35.9 32.4 33.4 41.5 54.2 70.7 74.6 50.2 C
Legend
  • A = WMO "3 and 5 rule" (i.e. no more than 3 consecutive and no more than 5 total missing for either temperature or precipitation)
  • B = At least 25 years
  • C = At least 20 years
  • D = At least 15 years