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:
1971 to 2000 Canadian Climate Normals station data
 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Temperature:
Daily Average (°C)-2.4 1.2 5.7 10.1 14.3 18.1 21.4 21.4 16.2 10 2.8 -1.8 9.7 LegendCC
Standard Deviation3.4 2.9 1.5 1.3 1 1.6 1.5 1.7 1.7 1.1 3 3.3 0.8 LegendCC
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 LegendCC
Daily Minimum (°C)-5.5 -2.6 0.7 4 8.2 12.1 14.6 14.6 9.9 5.1 -0.3 -4.7 4.7 LegendCC
Extreme Maximum (°C)15 16.4 23.7 33.1 40.4 39.1 42.2 41.5 38.7 29.9 20 17.8   Legend
Extreme Minimum (°C)-23.7 -22.5 -20 -4.4 0.8 4.4 6.1 7.4 -2.2 -18.1 -27.7 -27.1   Legend
Precipitation:
Rainfall (mm)35.1 28 26.4 18.8 18.2 18.8 14.4 22.9 27.3 36.4 49.1 43.3 338.7 LegendCC
Snowfall (cm)39 22.7 6.8 0.6 0 0 0 0 0 0.9 18.2 29.3 117.4 LegendCC
Precipitation (mm)64.1 45.2 32.7 19.3 18.2 18.8 14.4 22.9 27.3 37.2 65.4 67 432.4 LegendCC
Average Snow Depth (cm)8 3 1 0 0 0 0 0 0 0 2 4 1 LegendCC
Median Snow Depth (cm)7 2 0 0 0 0 0 0 0 0 1 3 1 LegendCC
Snow Depth at Month-end (cm)4 5 0 0 0 0 0 0 0 0 3 5 1 LegendCC
Extreme Daily Rainfall (mm)60.5 38.4 26.1 29.4 20.1 31.2 34.3 22.4 27.9 46 43.2 36.6   Legend
Extreme Daily Snowfall (cm)55.1 39.1 21.6 3 0 0 0 0 0 6.8 38.8 34.3   Legend
Extreme Daily Precipitation (mm)60.5 38.4 32 29.4 20.1 31.2 34.3 22.4 27.9 46 43.2 37.4   Legend
Extreme Snow Depth (cm)71 48 51 0 0 0 0 0 0 3 41 64   Legend
Days with Maximum Temperature:
<= 0 °C12.2 5 0.62 0 0 0 0 0 0.05 0.05 3.7 12.1 33.7 LegendCC
> 0 °C18.8 23.2 30.4 30 31 30 31 31 30 31 26.4 18.9 331.6 LegendCC
> 10 °C1.2 4.5 18 27 30.8 30 31 31 29.8 26.7 5.8 1.4 237 LegendCC
> 20 °C0 0 0.38 6.9 14.1 21.4 28.7 28.2 19 4.6 0 0 123.1 LegendCC
> 30 °C0 0 0 0.14 1.3 4.4 12.1 12.3 2.9 0 0 0 33.2 LegendCC
> 35 °C0 0 0 0 0.19 0.81 3.7 3.5 0.20 0 0 0 8.4 LegendCC
Days with Minimum Temperature:
> 0 °C6.5 9.8 18 26.8 31 30 31 31 29.9 27.3 15.4 8.2 264.7 LegendCC
<= 2 °C27.8 22.5 19.2 8.5 0.33 0 0 0 0.70 7.5 19.3 27.3 133.1 LegendCC
<= 0 °C24.5 18.5 13 3.2 0 0 0 0 0.15 3.7 14.7 22.9 100.6 LegendCC
< -2 °C19.8 12.6 6.3 0.95 0 0 0 0 0.05 1.1 9.3 18.9 68.9 LegendCC
< -10 °C7.4 3.3 0.52 0 0 0 0 0 0 0.10 1.6 5.3 18.2 LegendCC
< -20 °C0.70 0.24 0 0 0 0 0 0 0 0 0.20 0.95 2.1 LegendCC
< - 30 °C0 0 0 0 0 0 0 0 0 0 0 0 0 LegendCC
Days with Rainfall:
>= 0.2 mm6 7.9 8.8 6.8 7.4 7 5.1 6.4 7.3 9.5 10.4 7.3 89.7 LegendCC
>= 5 mm1.8 1.8 1.5 1.1 0.95 1.2 0.86 1.4 1.8 2.5 2.9 2.6 20.4 LegendCC
>= 10 mm1 0.71 0.67 0.33 0.24 0.38 0.14 0.57 0.75 0.95 1.3 1.4 8.4 LegendCC
>= 25 mm0.30 0.14 0.19 0.05 0 0.05 0.05 0.05 0.05 0.05 0.25 0.30 1.5 LegendCC
Days With Snowfall:
>= 0.2 cm7.5 4.7 2.6 0.33 0 0 0 0 0 0.40 4 8.3 27.7 LegendCC
>= 5 cm2.3 1.2 0.38 0 0 0 0 0 0 0.10 0.90 1.7 6.6 LegendCC
>= 10 cm1.3 0.71 0.14 0 0 0 0 0 0 0 0.60 0.65 3.4 LegendCC
>= 25 cm0.15 0.19 0 0 0 0 0 0 0 0 0.15 0.10 0.59 LegendCC
Days with Precipitation:
>= 0.2 mm11.7 11.1 9.8 6.9 7.4 7 5.1 6.4 7.3 9.7 12.7 13.4 108.3 LegendCC
>= 5 mm3.8 2.8 2.1 1.1 0.95 1.2 0.86 1.4 1.8 2.5 3.9 3.9 26.2 LegendCC
>= 10 mm1.7 1.3 0.81 0.33 0.24 0.38 0.14 0.57 0.75 0.95 1.8 2 11 LegendCC
>= 25 mm0.45 0.19 0.19 0.05 0 0.05 0.05 0.05 0.05 0.05 0.35 0.55 2 LegendCC
Days with Snow Depth:
>= 1 cm14.6 8.5 2 0 0 0 0 0 0 0.15 3.5 12.7 41.4 LegendDD
>= 5 cm10.5 5.5 1.6 0 0 0 0 0 0 0 2.3 8 27.9 LegendDD
>= 10 cm8.4 3.6 1.4 0 0 0 0 0 0 0 1.9 5.4 20.6 LegendDD
>= 20 cm5.1 1.2 0.67 0 0 0 0 0 0 0 1.3 1.8 10.1 LegendDD
Wind:
Maximum Hourly Speed (km/h)63 63 56 59 74 80 81 69 56 59 65 65   Legend
Direction of Maximum Hourly SpeedS S S S S S S S S S S S S Legend
Maximum Gust Speed (km/h)97 72 89 74 74 79 77 92 87 85 87 84   Legend
Direction of Maximum GustS S S S S S S S S S S S S Legend
Degree Days:
Above 24 °C0 0 0 0 0.3 2.4 17 16.3 0.6 0 0 0 36.6 LegendCC
Above 18 °C0 0 0 0.3 8.9 46.1 115.6 114.7 23 0.6 0 0 309.1 LegendCC
Above 15 °C0 0 0 3 31.7 103.2 198.8 197.9 66.4 5.2 0.2 0 606.2 LegendCC
Above 10 °C0.2 0 2.5 41.1 136.9 243 352.2 352.1 189.5 46.5 3.5 0.3 1367.7 LegendCC
Above 5 °C6.1 12 51.8 152.7 289.3 393 507.2 507.1 337.4 160.5 28.9 6 2452 LegendCC
Above 0 °C45.8 82.8 184 301.6 444.3 543 662.2 662.1 487.1 311.1 114.4 49.8 3888.2 LegendCC
Below 0 °C121.2 49.3 6.2 0 0 0 0 0 0 1.2 31.3 104.6 313.7 LegendCC
Below 5 °C236.5 119.7 29 1.1 0 0 0 0 0.3 5.6 95.8 215.8 703.8 LegendCC
Below 10 °C385.5 249 134.6 39.5 2.6 0 0 0 2.4 46.6 220.4 365.1 1445.7 LegendCC
Below 15 °C540.3 390.2 287.2 151.3 52.4 10.3 1.6 0.7 29.3 160.2 367.1 519.8 2510.3 LegendCC
Below 18 °C633.3 474.9 380.2 238.6 122.6 43.1 11.4 10.6 75.9 248.7 456.9 612.8 3308.9 LegendCC
Bright Sunshine:
Total Hours58.7 83.1 143.7 196 238.2 255 280.3 240.7 183.6 129 60.4 46.6 1915.3 LegendCC
Days with measureable21 22.8 28.6 28.9 30.2 29.4 30.6 30.7 29 28.4 21.1 19.4 319.9 LegendCC
% of possible daylight hours22.1 29.3 39.1 47.5 49.8 52.1 56.8 53.6 48.3 38.6 22.2 18.5 39.8 LegendCC
Extreme Daily5.6 7.8 9.2 10.7 12.4 12.8 12.8 11.3 9.8 7.7 6 4.8   LegendCC
Humidex:
Extreme Humidex14.4 15.8 22.9 32.5 39.9 41.1 46.3 41.6 38.7 29.4 20.4 17.8   Legend
Wind Chill:
Extreme Wind Chill-35.6 -32.9 -26.1 -4.9 -2 3 5.3 6.7 -3.6 -25 -41.4 -36.6   Legend
Humidity:
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 LegendCC
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 LegendCC
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