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Contents
- The climate of Winthrop
- The best time to visit Winthrop
- The worst time to visit Winthrop
- Spring weather in Winthrop
- Summer weather in Winthrop
- Autumn weather in Winthrop
- Winter weather in Winthrop
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
A mirror view in the blue water of Blue Lake of the trees and rock cliffs nearby, in Winthrop, Washington
The climate of Winthrop
According to the Köppen climate classification, Winthrop, Washington, USA falls under the Dsb - Humid continental, Dry warm summer climate zone. This type of climate is typically characterized by significant temperature differences from season to season and high humidity.
The data, which serve as averages for every month, convey a comprehensive understanding of climatic parameters. Temperatures in this region show a wide span, lowest being 13.5°F (-10.3°C) in winter and peaking at 75.9°F (24.4°C) in the heat of summer. Remarkable fluctuations occur in relative humidity as well; the humidity soars to 93% during the winter months but recedes to around 53% during July and August.
Monthly averages show less variability in wind speed, ranging from 3.6mph (5.8km/h) to 5mph (8km/h). In terms of sunshine, the duration of daylight also experiences significant variation, being shortest in December with 8.4 hours, and longest in June boasting 16.1 hours. Accounting for cloud coverage, UV index, pressure, and visibility, the climate in Winthrop certainly offers contrasts throughout the year.
Intriguing weather patterns emerge, notably a wet season stretching from November to February with high precipitation, while the summer months get considerably less rain, making them the drier part of the year.
The data, which serve as averages for every month, convey a comprehensive understanding of climatic parameters. Temperatures in this region show a wide span, lowest being 13.5°F (-10.3°C) in winter and peaking at 75.9°F (24.4°C) in the heat of summer. Remarkable fluctuations occur in relative humidity as well; the humidity soars to 93% during the winter months but recedes to around 53% during July and August.
Monthly averages show less variability in wind speed, ranging from 3.6mph (5.8km/h) to 5mph (8km/h). In terms of sunshine, the duration of daylight also experiences significant variation, being shortest in December with 8.4 hours, and longest in June boasting 16.1 hours. Accounting for cloud coverage, UV index, pressure, and visibility, the climate in Winthrop certainly offers contrasts throughout the year.
Intriguing weather patterns emerge, notably a wet season stretching from November to February with high precipitation, while the summer months get considerably less rain, making them the drier part of the year.
The best time to visit Winthrop
Finding the ideal time to visit Winthrop really depends on the personal preferences and activities planned. For those seeking warmth and abundant sunshine, June through August meet the criteria perfectly. These months offer the longest daylight hours, a low median cloud cover, and minimal rainfall. These conditions are ideal for outdoor activities.
The worst time to visit Winthrop
On the contrary, individuals not fond of extreme cold might want to avoid visiting Winthrop from mid-December to late February where the temperatures fall as low as 13.5°F (-10.3°C). These months also experience the highest humidity levels and least amount of sunshine hours, the later of which could affect visibility and timing of outdoor activities, limiting the overall experience.
Spring weather in Winthrop
Spring weather in Winthrop sees the departure of winter’s chill and welcomes a moderate rise in temperature. From March to May, temperatures stride from a low 19°F (-7.2°C) to a more comfortable 58.3°F (14.6°C). Rainfall during this period remains moderate, providing enough water for blooming flora without causing discomfort to residents and visitors alike. Make the most out of the lengthening days with 13.7 hours of daylight by end of spring.
Summer weather in Winthrop
Marking the warmest months of the year, summer in Winthrop extends from June through August. Temperatures often rest at a comfortable range between 64.6°F (18.1°C) and 75.9°F (24.4°C). Reduced rainfall and lower humidity during this period make for a dry and warm summer, ideal for outdoor recreational activities.
Autumn weather in Winthrop
As summer fades, autumn brings cooler temperatures and increased rainfall to Winthrop. September to November sees a steady decline in temperature, from 64.6°F (18.1°C) to a chilling 35.4°F (1.9°C). Cloud cover also increases during these months, making for overcast and often gloomy days.
Winter weather in Winthrop
Winter in Winthrop is characterized by its bone-chilling cold, with temperatures plummeting to a low 13.5°F (-10.3°C). Coupled with the high humidity of 91%, these conditions might prove harsh for those unaccustomed to such weather. Snowfall is also significant during this season, presenting a breathtaking winter landscape, ideal for those who take pleasure in winter sports.
Weather in January
Weather in Winthrop, Washington takes a decidedly winter turn in January. The month brings colder temperatures when compared to December, with the highest average temperature dropping slightly to 29.3°F (-1.5°C) and the lowest average reaching a chilling 14.2°F (-9.9°C). Weather in January »
Weather in February
In February, Winthrop witnesses a slight amelioration in the icy winter weather. The first signs of improvement come in the form of lower snowfall, with an average snowfall decrease to 7.24" (184mm) from the snow-laden January. Weather in February »
Weather in March
March in Winthrop sees transforming weather patterns as spring steps foot into the region. Warming begins towards the end of winter, with temperatures climbing noticeably to a high of 36.5°F (2.5°C) and a low of 19°F (-7.2°C). Weather in March »
Weather in April
April witnesses a dramatic shift in weather as Winthrop transitions fully into spring. There is a significant temperature rise, sending the mercury up to a high of 46°F (7.8°C) and a low of 26.6°F (-3°C). The last vestiges of winter snow reduce to a mere 1.22" (31mm) as rains start to dominate. Weather in April »
Weather in May
May in Winthrop ushers in truly pleasant weather, although temperatures remain moderate. The higher temperature reaches an average of 58.3°F (14.6°C) and the lower bounds at around 35.2°F (1.8°C). Amidst the changing weather, the level of rainfall in May is quite optimal with an average of 1.42" (36mm). Weather in May »
Weather in June
June brings the shift towards warmer temperatures marking the onset of summer in Winthrop. Average temperatures range between a high of 64.6°F (18.1°C) and a low of 40.5°F (4.7°C). As summer steps in, so does abundant sunshine, with an average of 16.1 daylight hours and 11.4 hours of sunshine. Weather in June »
Weather in July
July is recognized as the hottest month in Winthrop, with temperatures soaring to a monthly high of 75.6°F (24.2°C) and not dipping below 46.9°F (8.3°C). The heat makes its presence in the sunshine hours as well, which hover around 11.8 hours. Weather in July »
Weather in August
August continues the heated trend from July, asserting itself as part of Winthrop’s warmest months. Temperatures almost match the previous month, with a high at 75.9°F (24.4°C) and a low of 47.8°F (8.8°C). The month benefits from reduced humidity and a low average rainfall of 0.43" (11mm). Weather in August »
Weather in September
September in Winthrop marks the onset of fall. Temperatures scale down from the heights of summer, averaging a high of 64.6°F (18.1°C) and a low of 41.2°F (5.1°C). Despite a marked decrease in temperatures, September still retains a summer-like atmosphere with an average daylight period of 12.6 hours. Weather in September »
Weather in October
October in Winthrop witnesses a distinct drop in temperatures, signaling the profound arrival of fall. The month’s highest temperature averages out at 48.9°F (9.4°C) while the minimum hits 31.8°F (-0.1°C). A key feature of October's weather profile is an increase in rainfall, with an average precipitation of 1.65" (42mm). Weather in October »
Weather in November
November's weather in Winthrop grows increasingly colder, nearing the thresholds of winter. The high and low averages decrease to 35.4°F (1.9°C) and 22.1°F (-5.5°C) respectively. Accumulating snowfall makes a comeback with an average of 4.06" (103mm) recorded for this month. Weather in November »
Weather in December
December in Winthrop marks the full onset of winter, bringing the coldest temperatures of the year. The high average is noted at 27.5°F (-2.5°C) while a chilling low average dips to 13.5°F (-10.3°C). The town is typically blanketed with around 12.87" (327mm) of snow, adding to the already existing November snowfall. Weather in December »
Updated: Jun 27, 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
What is the most humid month?
January is the most humid month, with an average relative humidity of 93%.
How many days does it rain in Winthrop?
Throughout the year, there are 142.6 rainfall days, and 17.91" (455mm) of precipitation is accumulated.
When does it snow?
January through April, September through December are months with snowfall.
How much does it snow?
In Winthrop, during the entire year, snow falls for 66.9 days and aggregates up to 43.98" (1117mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 4.1h of sunshine.
What is the month with the lowest UV index?
January, February and November, with an average maximum UV index of 1, are months with the lowest UV index.
When is Daylight Saving Time (DST) in Winthrop?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Winthrop, 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.
When it does not snow?
May through August are months without snowfall.
When are the longest days?
June has the longest days of the year, with an average of 16h and 6min of daylight.
What are the least humid months?
The months with the lowest humidity are July and August, with an average relative humidity of 53%.
What is the driest month?
The month with the least rainfall in Winthrop is July, when the rain falls for 6.8 days and typically collects 0.31" (8mm) of precipitation.
When is the highest UV index?
July is the month with the highest UV index, with an average maximum UV index of 6.
What month is the hottest?
Winthrop's August weather, marked by an average high temperature of 75.9°F (24.4°C) and an average low temperature of 47.8°F (8.8°C), is the warmest in the year.
What month has the most sunshine?
The month with the most sunshine in Winthrop is August, with an average of 11.9h of sunshine.
What are the coldest months?
With an average high-temperature of 27.5°F (-2.5°C) and an average low-temperature of 13.5°F (-10.3°C), December is the coldest month in Winthrop.
What is the wettest month?
December is the month with the most rainfall. Rain falls for 10.1 days and accumulates 2.48" (63mm) of precipitation.
What is the snowiest month?
The month with the most snowfall is December, when snow falls for 15.3 days and typically aggregates up to 12.87" (327mm) of snow.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 8h and 24min of daylight.
Average temperature
Winthrop, WA
The warmest month (with the highest average high temperature) is August (75.9°F).
The month with the lowest average high temperature is December (27.5°F).
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (13.5°F).
Average pressure
Winthrop, WA
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
30"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.95"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June and August (29.95"Hg).
Average wind speed
Winthrop, WA
- Average wind speed in January:
3.6mph - Average wind speed in February:
3.9mph - Average wind speed in March:
4.2mph - Average wind speed in April:
4.8mph - Average wind speed in May:
4.6mph - Average wind speed in June:
5mph
- Average wind speed in July:
5mph - Average wind speed in August:
4.9mph - Average wind speed in September:
4.6mph - Average wind speed in October:
4.2mph - Average wind speed in November:
3.9mph - Average wind speed in December:
3.6mph
The windiest months (with the highest average wind speed) are June and July (5mph).
The calmest months (with the lowest average wind speed) are January and December (3.6mph).
Average humidity
Winthrop, WA
The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).
Average rainfall
Winthrop, WA
- Average rainfall in January:
2.36" - Average rainfall in February:
1.61" - Average rainfall in March:
2.13" - Average rainfall in April:
1.22" - Average rainfall in May:
1.42" - Average rainfall in June:
1.18"
- Average rainfall in July:
0.31" - Average rainfall in August:
0.43" - Average rainfall in September:
0.98" - Average rainfall in October:
1.65" - Average rainfall in November:
2.13" - Average rainfall in December:
2.48"
The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days
Winthrop, WA
- Average rainfall days in January:
12 days - Average rainfall days in February:
11.2 days - Average rainfall days in March:
17.3 days - Average rainfall days in April:
15.8 days - Average rainfall days in May:
14.2 days - Average rainfall days in June:
12.5 days
- Average rainfall days in July:
6.8 days - Average rainfall days in August:
6.1 days - Average rainfall days in September:
9.7 days - Average rainfall days in October:
12.3 days - Average rainfall days in November:
14.6 days - Average rainfall days in December:
10.1 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (6.1 days).
Average snowfall
Winthrop, WA
The month with the highest snowfall is December (12.87").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days
Winthrop, WA
- Average snowfall days in January:
14.8 days - Average snowfall days in February:
14 days - Average snowfall days in March:
9.7 days - Average snowfall days in April:
3.5 days - Average snowfall days in May:
0.1 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:
0.2 days - Average snowfall days in October:
0.8 days - Average snowfall days in November:
8.5 days - Average snowfall days in December:
15.3 days
The month with the highest number of snowfall days is December (15.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Winthrop, WA
- Average daylight in January:
8h and 5min - Average daylight in February:
10h and 1min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 2min - Average daylight in June:
16h and 1min
- Average daylight in July:
15h and 4min - Average daylight in August:
14h and 2min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 1min - Average daylight in December:
8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 2min - Average sunshine in April:
9h and 5min - Average sunshine in May:
10h and 4min - Average sunshine in June:
11h and 2min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
11h and 5min - Average sunshine in September:
10h and 4min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Winthrop, WA
- Average sunshine days in January:
11.1 days - Average sunshine days in February:
9.4 days - Average sunshine days in March:
8.3 days - Average sunshine days in April:
10.5 days - Average sunshine days in May:
14.2 days - Average sunshine days in June:
13.9 days
- Average sunshine days in July:
22 days - Average sunshine days in August:
23 days - Average sunshine days in September:
18.1 days - Average sunshine days in October:
16.3 days - Average sunshine days in November:
9.9 days - Average sunshine days in December:
11.8 days
The month with the most sunshine days is August (23 days).
The month with the least sunshine days is March (8.3 days).
Average UV index
Winthrop, WA
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover
Winthrop, WA
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility
Winthrop, WA
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
Winthrop, Washington, USA
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