Climate and monthly weather forecastCathan, WA
Climate and monthly weather forecast
Weather in January
January is a chilly winter month in Cathan, Washington, with an average temperature varying between 43.3°F (6.3°C) and 34.7°F (1.5°C). Shifting into January, Cathan records an average high-temperature of a chilly 43.3°F (6.3°C), presenting minor fluctuations compared to the previous month. Weather in January »Weather in February
February, the last month of the winter in Cathan, is also a frosty month, with temperature in the range of an average low of 33.8°F (1°C) and an average high of 44.2°F (6.8°C). As Cathan welcomes February, the average high-temperature stabilizes at a still frosty 44.2°F (6.8°C), showing little deviation from January's 43.3°F (6.3°C). Weather in February »Weather in March
March, the first month of the spring in Cathan, is also a frosty month, with temperature in the range of an average high of 48.4°F (9.1°C) and an average low of 36.3°F (2.4°C). March's commencement is accompanied by an average high-temperature of a still frosty 48.4°F (9.1°C), diverging marginally from February's 44.2°F (6.8°C). Weather in March »Weather in April
April in Cathan, Washington, is a fresh spring month, with temperature in the range of an average low of 39.4°F (4.1°C) and an average high of 53.6°F (12°C). As March transitions into April, Cathan records an average high-temperature of a cool 53.6°F (12°C), showing a gentle shift from the preceding month. Weather in April »Weather in May
May, the last month of the spring in Cathan, is a comfortable month, with an average temperature varying between 61.3°F (16.3°C) and 43.7°F (6.5°C). Cathan observes a slight ascent in average high-temperatures during May, adjusting from a cool 53.6°F (12°C) in April to an enjoyable 61.3°F (16.3°C). Weather in May »Weather in June
June, the first month of the summer in Cathan, is still a refreshing month, with an average temperature ranging between max 66°F (18.9°C) and min 47.1°F (8.4°C). June's climate shows a minor adjustment in average high-temperatures to a still refreshing 66°F (18.9°C) from May's 61.3°F (16.3°C). Weather in June »Weather in July
July is a pleasant summer month in Cathan, Washington, with an average temperature ranging between max 72°F (22.2°C) and min 50.5°F (10.3°C). Cathan in July experiences a slight uptick in the average high-temperature, adjusting from June's comfortable 66°F (18.9°C) to a pleasant 72°F (22.2°C). Weather in July »Weather in August
The last month of the summer, August, is another pleasant month in Cathan, Washington, with an average temperature varying between 51.6°F (10.9°C) and 72.3°F (22.4°C). Cathan witnesses the warmest weather in August, with temperatures averaging a high of 72.3°F (22.4°C) and a low of 51.6°F (10.9°C). Weather in August »Weather in September
The first month of the autumn, September, is still a refreshing month in Cathan, Washington, with temperature in the range of an average high of 66.2°F (19°C) and an average low of 49.1°F (9.5°C). September's onset introduces a mild reduction in the average high-temperature, from a pleasant 72.3°F (22.4°C) in August to a refreshing 66.2°F (19°C). Weather in September »Weather in October
October, the same as September, in Cathan, Washington, is another refreshing autumn month, with an average temperature ranging between max 56.3°F (13.5°C) and min 43.3°F (6.3°C). October brings a decrease in the average high-temperature, shifting from a comfortable 66.2°F (19°C) in September to a mild 56.3°F (13.5°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Cathan, Washington, with temperature in the range of an average low of 38.5°F (3.6°C) and an average high of 46.9°F (8.3°C). Observing a mild shift, the average high-temperature during November reduces from October's refreshing 56.3°F (13.5°C) to a frosty 46.9°F (8.3°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Cathan, Washington, with an average temperature fluctuating between 41.7°F (5.4°C) and 34°F (1.1°C). December, characterized by an average high temperature of 41.7°F (5.4°C) and a low temperature of 34°F (1.1°C), is generally the coldest month. Weather in December »Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, February, November and December, with an average relative humidity of 85%, are most humid months.
Throughout the year, there are 188.6 rainfall days, and 34.92" (887mm) of precipitation is accumulated.
January through April, November and December are months with snowfall.
In Cathan, during the entire year, snow falls for 11.6 days and aggregates up to 9.61" (244mm) of snow.
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index.
February is the month with the most snowfall. Snow falls for 4.3 days and accumulates 4.45" (113mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Cathan, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
May through October are months without snowfall.
With an average of 16h and 0min of daylight, June has the longest days of the year.
July is the least humid month, with an average relative humidity of 73%.
July is the month with the least rainfall. Rain falls for 8 days and accumulates 0.51" (13mm) of precipitation.
The month with the highest UV index is July, with an average maximum UV index of 5.
August is the month that records the highest temperatures, with averages ranging from a high of 72.3°F (22.4°C) to a low of 51.6°F (10.9°C).
The month with the most sunshine is August, with an average of 10.7h of sunshine.
The month with the most rainfall is November, when the rain falls for 20.2 days and typically aggregates up to 4.92" (125mm) of precipitation.
Cathan's December weather reaches an average high of 41.7°F (5.4°C) and an average low of 34°F (1.1°C), making it the coldest month.
With an average of 8h and 24min of daylight, December has the shortest days of the year.
The month with the least sunshine is December, with an average of 4.1h of sunshine.
Average temperature
Cathan, WA
The warmest month (with the highest average high temperature) is August (72.3°F).
The month with the lowest average high temperature is December (41.7°F).
The month with the highest average low temperature is August (51.6°F).
The coldest month (with the lowest average low temperature) is February (33.8°F).
Average pressure
Cathan, WA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
30.04"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
30.01"Hg
- Average pressure in July:
30.03"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.08"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed
Cathan, WA
- Average wind speed in January:
5.6mph - Average wind speed in February:
5mph - Average wind speed in March:
5.5mph - Average wind speed in April:
4.7mph - Average wind speed in May:
3.9mph - Average wind speed in June:
3.7mph
- Average wind speed in July:
3.4mph - Average wind speed in August:
3.3mph - Average wind speed in September:
3.9mph - Average wind speed in October:
4.7mph - Average wind speed in November:
5.6mph - Average wind speed in December:
5.3mph
The windiest months (with the highest average wind speed) are January and November (5.6mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity
Cathan, WA
The months with the highest relative humidity are January, February, November and December (85%).
The month with the lowest relative humidity is July (73%).
Average rainfall
Cathan, WA
- Average rainfall in January:
4.69" - Average rainfall in February:
3.66" - Average rainfall in March:
3.78" - Average rainfall in April:
2.95" - Average rainfall in May:
2.05" - Average rainfall in June:
1.38"
- Average rainfall in July:
0.51" - Average rainfall in August:
0.59" - Average rainfall in September:
2.05" - Average rainfall in October:
3.82" - Average rainfall in November:
4.92" - Average rainfall in December:
4.53"
The wettest month (with the highest rainfall) is November (4.92").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days
Cathan, WA
- Average rainfall days in January:
18.1 days - Average rainfall days in February:
16.9 days - Average rainfall days in March:
20.9 days - Average rainfall days in April:
19 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
14.1 days
- Average rainfall days in July:
8 days - Average rainfall days in August:
6.9 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
17.3 days - Average rainfall days in November:
20.2 days - Average rainfall days in December:
19.4 days
The month with the highest number of rainy days is March (20.9 days).
The month with the least rainy days is August (6.9 days).
Average snowfall
Cathan, WA
The month with the highest snowfall is February (4.45").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Cathan, WA
- Average snowfall days in January:
2.3 days - Average snowfall days in February:
4.3 days - Average snowfall days in March:
2.1 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.7 days - Average snowfall days in December:
2 days
The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Cathan, WA
- Average daylight in January:
8h and 54min - Average daylight in February:
10h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 42min - Average daylight in May:
15h and 12min - Average daylight in June:
16h and 0min
- Average daylight in July:
15h and 36min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 18min - Average daylight in December:
8h and 24min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January:
4h and 12min - Average sunshine in February:
4h and 24min - Average sunshine in March:
6h and 0min - Average sunshine in April:
7h and 54min - Average sunshine in May:
9h and 6min - Average sunshine in June:
9h and 18min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 42min - Average sunshine in September:
9h and 12min - Average sunshine in October:
5h and 24min - Average sunshine in November:
4h and 30min - Average sunshine in December:
4h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days
Cathan, WA
- Average sunshine days in January:
10.4 days - Average sunshine days in February:
8.3 days - Average sunshine days in March:
8.1 days - Average sunshine days in April:
8.4 days - Average sunshine days in May:
14.1 days - Average sunshine days in June:
13.3 days
- Average sunshine days in July:
20.6 days - Average sunshine days in August:
22 days - Average sunshine days in September:
15.2 days - Average sunshine days in October:
12.4 days - Average sunshine days in November:
9 days - Average sunshine days in December:
9.5 days
The month with the most sunshine days is August (22 days).
The month with the least sunshine days is March (8.1 days).
Average UV index
Cathan, WA
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover
Cathan, WA
The month with the most cloud cover is December (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 26).
Average visibility
Cathan, WA
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).
