Climate Sisters Island Automatic Weather Reporting System 2020-2024

Climate and trends: average temperature, flight conditions, precipitation, wind speed and direction.

Calculated from historical METAR data of Sisters Island Automatic Weather Reporting System (CWGT) between 2020 and 2024.

VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	0.0	0	0	0	0	0
February	0.0	0	0	0	0	0
March	0.0	0	0	0	0	0
April	0.0		0	0	0	0
May	0.0		0	0	0	0
June	0.0		0	0	0	0
July	0.0		0	0	0	0
August	0.0		0	0	0	0
September	0.0		0	0	0	0
October	0.0		0	0	0	0
November	0.0		0	0	0	0
December	0.0		0	0	0	0
Average

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 5 mi or more and a ceiling of 3,000 ft or more. Only observations between sunrise and sunset are taken into account.

Marginal VFR conditions (%)

Month	Average	2024	2023	2022	2021	2020
January	0.0	0	0	0	0	0
February	0.0	0	0	0	0	0
March	0.0	0	0	0	0	0
April	0.0		0	0	0	0
May	0.0		0	0	0	0
June	0.0		0	0	0	0
July	0.0		0	0	0	0
August	0.0		0	0	0	0
September	0.0		0	0	0	0
October	0.0		0	0	0	0
November	0.0		0	0	0	0
December	0.0		0	0	0	0
Average

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 3⅛ mi or more and a ceiling of 1,000 ft or more. Only observations between sunrise and sunset are taken into account.

Maximum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	7.1	7	8	6	8	8
February	6.6	8	8	8	6	7
March	8.9	9	11	9	9	8
April	11.5		12	11	13	12
May	16.4		20	13	15	16
June	18.6		20	18	21	17
July	21.3		23	22	22	20
August	21.8		22	24	22	21
September	18.5		17	22	17	19
October	13.4		13	18	12	13
November	9.4		10	8	10	10
December	7.0		9	5	5	8
Average	12.7	7.7	14.4	13.8	13.3	13.1

44th highest temperature of Canada

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month	Average	2024	2023	2022	2021	2020
January	4.4	4	5	4	5	4
February	3.5	5	4	4	4	4
March	5.3	6	5	6	6	5
April	7.4		7	6	8	8
May	11.4		13	9	11	12
June	13.9		14	13	15	13
July	16.5		17	17	18	16
August	16.9		17	18	17	16
September	14.2		14	15	13	15
October	9.8		10	12	9	10
November	6.5		7	4	7	7
December	4.4		7	2	2	6
Average	8.9	4.8	9.8	9.5	9.4	9.6

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month	Average	2024	2023	2022	2021	2020
January	0.0	0	0	0	0	0
February	0.0	0	0	0	0	0
March	0.0	0	0	0	0	0
April	0.0		0	0	0	0
May	0.0		0	0	0	0
June	0.0		0	0	0	0
July	0.0		0	0	0	0
August	0.0		0	0	0	0
September	0.0		0	0	0	0
October	0.0		0	0	0	0
November	0.0		0	0	0	0
December	0.0		0	0	0	0
Average

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (knots)

Month	Average	2024	2023	2022	2021	2020
January	15.7	17	15	13	17	20
February	12.9	12	16	10	14	14
March	11.9	12	11	13	15	11
April	13.0		16	13	11	11
May	9.6		8	10	9	11
June	11.0		10	10	11	12
July	9.6		10	9	10	10
August	9.5		9	9	10	11
September	10.7		10	10	13	9
October	13.1		13	10	17	12
November	14.7		13	12	17	17
December	14.3		16	13	14	15
Average	12.1	13.7	12.1	10.8	12.7	12.3

44th highest wind speed of Canada

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month	2024	2023	2022	2021	2020
January	109°	115°	117°	116°	111°
February	093°	117°	100°	147°	099°
March	117°	118°	108°	115°	100°
April		128°	124°	184°	207°
May		316°	163°	284°	110°
June		319°	131°	150°	108°
July		192°	315°	307°	304°
August		302°	313°	311°	306°
September		076°	008°	113°	112°
October		103°	105°	112°	099°
November		118°	095°	120°	111°
December		115°	205°	174°	117°

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.