There is a weather station at Twan Lake, which is about 30 km (19 mi) north of Chilcotin Forest, on the Chilcotin Plateau.Like much of the Chilcotin Plateau, Twan Lake has a subarctic climate (Köppen Dfc), with relatively low precipitation.
| Climate data for Twan Creek, BC (1981-2010): 914m |
| Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Year |
| Record high °C (°F) |
11.5
(52.7) |
14.0
(57.2) |
18.5
(65.3) |
25.0
(77.0) |
34.5
(94.1) |
32.0
(89.6) |
34.5
(94.1) |
33.5
(92.3) |
35.0
(95.0) |
26.5
(79.7) |
14.5
(58.1) |
14.0
(57.2) |
35.0
(95.0) |
| Mean daily maximum °C (°F) |
−3.1
(26.4) |
1.1
(34.0) |
5.9
(42.6) |
11.6
(52.9) |
16.7
(62.1) |
20.1
(68.2) |
22.7
(72.9) |
22.4
(72.3) |
17.4
(63.3) |
9.6
(49.3) |
1.6
(34.9) |
−3.6
(25.5) |
10.2
(50.4) |
| Daily mean °C (°F) |
−9.0
(15.8) |
−5.7
(21.7) |
−1.2
(29.8) |
3.9
(39.0) |
8.7
(47.7) |
12.4
(54.3) |
14.4
(57.9) |
13.7
(56.7) |
9.2
(48.6) |
3.1
(37.6) |
−3.4
(25.9) |
−9.1
(15.6) |
3.1
(37.6) |
| Mean daily minimum °C (°F) |
−14.7
(5.5) |
−12.5
(9.5) |
−8.4
(16.9) |
−3.8
(25.2) |
0.6
(33.1) |
4.5
(40.1) |
6.1
(43.0) |
4.9
(40.8) |
1.0
(33.8) |
−3.4
(25.9) |
−8.3
(17.1) |
−14.5
(5.9) |
−4.0
(24.7) |
| Record low °C (°F) |
−43.5
(−46.3) |
−42.0
(−43.6) |
−34.5
(−30.1) |
−19.0
(−2.2) |
−8.0
(17.6) |
−4.0
(24.8) |
−2.5
(27.5) |
−7.0
(19.4) |
−12.0
(10.4) |
−34.0
(−29.2) |
−35.0
(−31.0) |
−46.5
(−51.7) |
−46.5
(−51.7) |
| Average precipitation mm (inches) |
36.9
(1.45) |
17.7
(0.70) |
17.7
(0.70) |
21.2
(0.83) |
37.1
(1.46) |
64.4
(2.54) |
60.9
(2.40) |
48.2
(1.90) |
36.7
(1.44) |
33.5
(1.32) |
43.6
(1.72) |
38.8
(1.53) |
456.7
(17.99) |
| Average snowfall cm (inches) |
33.5
(13.2) |
16.0
(6.3) |
14.1
(5.6) |
6.5
(2.6) |
2.1
(0.8) |
0.0
(0.0) |
0.0
(0.0) |
0.0
(0.0) |
1.1
(0.4) |
8.5
(3.3) |
32.3
(12.7) |
37.7
(14.8) |
151.8
(59.7) |
| Source: Environment Canada[2] |
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