Climate and monthly weather forecastBothell, WA
Climate and monthly weather forecast
The climate of Bothell
Bothell, nestled in Washington, USA, is characterized by a Csb climate, according to the Köppen climate classification: a Mediterranean climate yet with a warm summer. Elevation and proximity to water bodies influence Bothell's weather patterns significantly.Throughout the entire year, this city witnesses mild variations in temperature. The highest temperatures are experienced in July and August, with the thermometer reaching up to 74.8°F (23.8°C), while the coldest month is January, recording an average low of 35.1°F (1.7°C). Interestingly, Bothell experiences more rainfall than snowfall. The annual average rainfall varies from a low of 0.43" (11mm) in July to a high of 2.87" (73mm) in January. It's significant to note that the city's snowfall is almost negligible, ranging from 0.04" (1mm) to 1.42" (36mm) between January and March.
Although Bothell has high relative humidity throughout the year, a slight decrease during summer months is observed, from 85% in February to 71% in July. Furthermore, average wind speeds maintain a steady range from 3.4mph (5.5km/h) to 5.3mph (8.5km/h) across the year. When it comes to sunshine hours, the longest days with maximum sunlight exposure are in June, July and August, providing residents with 10.5 hours to 10.7 hours of sunshine.
The best time to visit Bothell
The ideal time to travel to Bothell depends largely on individual preferences for weather conditions. However, those seeking high temperatures and maximum sunshine should consider visiting between June and August. During these months, high temperatures can reach around 74.8°F (23.8°C), coupled with an impressive 10.7 hours of sunshine. Moreover, the relative humidity is at its lowest, averaging 71%, making this period comfortable for various outdoor activities.The worst time to visit Bothell
Traveling to Bothell might be challenging between December and February. These are the coldest months, with average low temperatures dropping to 35.8°F (2.1°C) in January, accompanied by high relative humidity, averaging 85% in December and February. Moreover, there is a noticeable increase in the number of rainfall days during these months, reaching up to 17.9 days in November.Spring weather in Bothell
Spring in Bothell, which extends from March to May, introduces warmer temperatures and reduced rainfall. The temperatures gradually rise from 50.2°F (10.1°C) in March to 63.7°F (17.6°C) in May. Simultaneously, average rainfall decreases consistently from 2.17" (55mm) in March to 1.34" (34mm) in May. The season is also characterized by an increase in daylight hours with May boasting 15.2 hours of daylight.Summer weather in Bothell
Summer arrives in Bothell with warmer temperatures, extended daylight, and the least rainfall. Spanning June to August, summer sees temperatures peaking at 74.8°F (23.8°C) in August, while rainfall is minimal, measuring only 0.43" (11mm) in July. However, one should also expect longer sunshine hours, peaking at 10.7 hours in August.Autumn weather in Bothell
Autumn in Bothell witnesses a gradual cooling of temperatures and increased rainfall. September through November see temperatures gradually drop from 68.7°F (20.4°C) to 48.4°F (9.1°C). Rainfall begins to escalate during this period, eventually reaching 2.83" (72mm) in November. Average sunshine hours also reduce to 4.7 hours by November.Winter weather in Bothell
Winter in Bothell ushers in the coldest temperatures of the year, increased precipitation, and shorter daylight hours. December through February brings an average low temperature of 35.8°F (2.1°C) in January. Rainfall is also high during this season with an average of 2.76" (70mm) in December. Additionally, daylight hours tend to be shorter, averaging 8.5 hours in December.Weather in January
In Bothell, Washington, frigid temperatures dominate the start of the year, a sharp contrast with the coming spring. Residents may experience ground frost and other freezing conditions. A notable feature of January is a relatively high average relative humidity of 85%. Weather in January »Weather in February
A typical February in Bothell is characterized by a subtle increase in daily temperatures, alongside a gradual decrease in humidity levels. The shift from January reflects the slow transition from wintry cold to a more spring-like climate. Weather in February »Weather in March
March ushers in a perceivable shift towards a warmer climate in Bothell. It paints a more vibrant picture than the grey winter with longer daylight hours and the invigorating aroma of budding flora. Notably, this month presents an average maximum daytime temperature of 50.2°F (10.1°C). Weather in March »Weather in April
April in Bothell signifies the full-fledged arrival of spring, bidding adieu to the cold, snow-kissed winter landscape. The vivid hues of blooming flowers, complemented by the soft chirping of birds, epitomize this season. This month stands out with a fresh average low temperature of 39.9°F (4.4°C). Weather in April »Weather in May
May brings a refreshing change in climate, with the Bothell terrain transitioning towards summer. Trees in full bloom, gentle breezes, and growing daylight hours mark the month. A unique characteristic of May is the minimal rainfall with an average of 1.34" (34mm). Weather in May »Weather in June
In June, Bothell, Washington welcomes the comfortable warmth of summer. It exhibits blues skies, longer days, and a spike in outdoor activities. This month's weather distinctly showcases a maximum temperature climbing to 68°F (20°C). Weather in June »Weather in July
July signifies the peak of the summer season in Bothell. This time of year marks outdoor barbecues, leisurely dips in the lake, and enjoying sunny afternoons in tree-shaded parks. A notable feature in July is the highest average temperature of the year, reaching 74.7°F (23.7°C). Weather in July »Weather in August
In Bothell, August continues to uphold the summer spirit. People can enjoy warm, sunlit days, even as daily temperatures begin to fall subtly. It carries the reputation for being the driest month, receiving only an average of 0.55" (14mm) of rainfall. Weather in August »Weather in September
September in Bothell characterizes the onset of autumn, with summer's warmth gradually fading into the cooler embrace of fall. The landscape curiously blends the green of lingering summer with auburn hints of impending autumn. Weather in September »Weather in October
October paints a quintessential autumn scene in Bothell. The city turns into a canvas of oranges, yellows, and reds, complete with crisp fall weather. A highlight of October's weather data shows an increase in rainfall to 2.32" (59mm). Weather in October »Weather in November
November in Bothell ushers in a cooler climate, hinting at the approaching winter season. The town witnesses the last shades of fall as the climate starts lowering its temperatures. Among the monthly parameters, there is a significant resurgence in relative humidity, averaging 84%. Weather in November »Weather in December
The festive month of December in Bothell marks the return of winter. It greets residents with holiday decorations, snowy landscapes, and a delightful Christmas-season vibe. A key attribute of December, the lowest monthly maximum temperature amounting to 42.6°F (5.9°C), is worth noting. Weather in December »Updated: Jul 27, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
With an average relative humidity of 85%, January is the most humid month.
The month with the most rainfall is January, when the rain falls for 16.9 days and typically aggregates up to 2.87" (73mm) of precipitation.
Throughout the year, there are 166.9 rainfall days, and 21.93" (557mm) of precipitation is accumulated.
Months with snowfall are January through April, November and December.
In Bothell, during the entire year, snow falls for 6.6 days and aggregates up to 2.6" (66mm) of snow.
January and December, with an average of 4.4h of sunshine, are months with the least sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the most snowfall is February, when snow falls for 2.5 days and typically aggregates up to 1.42" (36mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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.
In Bothell, snow does not fall in May through October.
With an average of 15h and 54min of daylight, June has the longest days of the year.
The months with the highest UV index are June and July, with an average maximum UV index of 5.
The least humid month is July, with an average relative humidity of 71%.
The month with the least rainfall is July, when the rain falls for 8 days and typically collects 0.43" (11mm) of precipitation.
August, recognised by an average high temperature of 74.8°F (23.8°C) and a low of 53.1°F (11.7°C), is Bothell's warmest month.
August has the most sunshine of the year, with an average of 10.7h of sunshine.
December is the coldest month, with the temperature often reaching an average high of 42.6°F (5.9°C) and an average low of 35.1°F (1.7°C).
December has the shortest days of the year, with an average of 8h and 30min of daylight.
Average temperature
Bothell, WA
The warmest month (with the highest average high temperature) is August (74.8°F).
The month with the lowest average high temperature is December (42.6°F).
The month with the highest average low temperature is August (53.1°F).
The coldest months (with the lowest average low temperature) are February and December (35.1°F).
Average pressure
Bothell, WA
- Average pressure in January:
30.1"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:
30.02"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:
30.04"Hg - Average pressure in November:
30.04"Hg - Average pressure in December:
30.08"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed
Bothell, WA
- Average wind speed in January:
5.3mph - Average wind speed in February:
4.9mph - Average wind speed in March:
5.3mph - 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:
3.5mph - Average wind speed in August:
3.4mph - Average wind speed in September:
3.8mph - Average wind speed in October:
4.4mph - Average wind speed in November:
5.2mph - Average wind speed in December:
4.9mph
The windiest months (with the highest average wind speed) are January and March (5.3mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity
Bothell, WA
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (71%).
Average rainfall
Bothell, WA
- Average rainfall in January:
2.87" - Average rainfall in February:
2.28" - Average rainfall in March:
2.17" - Average rainfall in April:
1.89" - Average rainfall in May:
1.34" - Average rainfall in June:
1.02"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.55" - Average rainfall in September:
1.46" - Average rainfall in October:
2.32" - Average rainfall in November:
2.83" - Average rainfall in December:
2.76"
The wettest month (with the highest rainfall) is January (2.87").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days
Bothell, WA
- Average rainfall days in January:
16.9 days - Average rainfall days in February:
14.4 days - Average rainfall days in March:
17.6 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
13.3 days - Average rainfall days in June:
12.1 days
- Average rainfall days in July:
8 days - Average rainfall days in August:
6.9 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
15.2 days - Average rainfall days in November:
17.9 days - Average rainfall days in December:
15.8 days
The month with the highest number of rainy days is November (17.9 days).
The month with the least rainy days is August (6.9 days).
Average snowfall
Bothell, WA
The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Bothell, WA
- Average snowfall days in January:
1.3 days - Average snowfall days in February:
2.5 days - Average snowfall days in March:
1.1 days - Average snowfall days in April:
0.3 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:
0.3 days - Average snowfall days in December:
1.1 days
The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Bothell, 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:
15h and 54min
- Average daylight in July:
15h and 30min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 18min - Average daylight in December:
8h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January:
4h and 24min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 6min - Average sunshine in May:
9h and 18min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 42min - Average sunshine in September:
9h and 24min - Average sunshine in October:
5h and 36min - Average sunshine in November:
4h and 42min - Average sunshine in December:
4h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 4h and 24min).
Average sunshine days
Bothell, WA
- Average sunshine days in January:
12.3 days - Average sunshine days in February:
11.2 days - Average sunshine days in March:
11.6 days - Average sunshine days in April:
10.5 days - Average sunshine days in May:
15.1 days - Average sunshine days in June:
14.4 days
- Average sunshine days in July:
20.9 days - Average sunshine days in August:
21.9 days - Average sunshine days in September:
14.8 days - Average sunshine days in October:
14.5 days - Average sunshine days in November:
10.8 days - Average sunshine days in December:
12.7 days
The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is April (10.5 days).
Average UV index
Bothell, WA
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Bothell, WA
The months with the most cloud cover are January and December (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility
Bothell, WA
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (5mi).
