Keystone weather and climate
Keystone weather and climate
Day
11 °C
Night
-5 °C
Precipitation
33 mm
in month
Rainy days
8 days
in month
Daylight
11 hours
average
Sunshine
8 hours
average
Humidity
50 %
Day
11 °C
Night
-5 °C
Precipitation
33 mm
in month
Rainy days
8 days
in month
Daylight
11 hours
average
Sunshine
8 hours
average
Humidity
50 %
Weather charts for Keystone
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Weather overview for Keystone
Weather overview
Keystone (United States of America) in general has a mild continental climate. The day temperatures range from 0.1 °C (32.2 °F) in December to 22.2 °C (72.0 °F) in July. The least rainy month in Keystone is October with its 8 days of rain, the rainiest month is August, when it rains 13 days. The highest night temperatures could be experienced in July with 4.5 °C (40.1 °F), the lowest in January with -15.1 °C (4.8 °F).
January weather
The maximum of the sea temperature is observable, the value of this measure is 0.0 °C (32.0 °F) in Keystone, on the contrary the night temperature is on its minimum, the value of this measure is -15.1 °C (4.8 °F). The beginning of the rise of the number of sun hours (without clouds) could be noticed, with its value of 7 hours.
February weather
The beginning of the rise of the number of rainy days could be noticed, its value is 10 days in Keystone. The day temperature rise's start could be observed, with its value being 1.1 °C (34.0 °F). The number of sun hours (without clouds) rises similarly to the previous month, its value is 8 hours.
March weather
The day temperature continues to rise, its value is 4.0 °C (39.2 °F) in Keystone, while the beginning of the rise of the night temperature could be noticed, with its value of -11.5 °C (11.3 °F). The rainfall amount rise's start could be observed, the value of this measure is 44 mm (1.74 in), while the number of rainy days continues to rise, with its value being 12 days. The number of sun hours (without clouds) continues to rise, with its value of 8 hours.
April weather
The rainfall amount continues to rise, its value is 49 mm (1.94 in) in Keystone. The day temperature continues to rise, with its value being 7.2 °C (45.0 °F), and the night temperature rises similarly to the previous month as well, with its value being -7.7 °C (18.1 °F). The maximum of the wind speed is observable in this month. The number of sun hours (without clouds) continues to rise, its value is 9 hours. The minimum of the humidity is observable in April.
May weather
The night temperature continues to rise, with its value of -2.5 °C (27.5 °F) in Keystone, and the day temperature rises similarly to the previous month too, with its value being 13.1 °C (55.6 °F).
June weather
The tourist season is about to start in Keystone. The day temperature rises similarly to the previous month, the value of this measure is 19.0 °C (66.2 °F), and the night temperature continues to rise as well, its value is 1.4 °C (34.5 °F). The rainfall amount descent's start could be observed, its value is 39 mm (1.54 in), and the beginning of the descent of the number of rainy days could be noticed as well, the value of this measure is 10 days. The maximum of the number of sun hours (without clouds) can be noticed in this month.
July weather
The day temperature is on its maximum, its value is 22.2 °C (72.0 °F) in Keystone, and the night temperature reaches its maximum too in July. The tourist season is close to its peak in July. The number of rainy days starts to rise, with its value being 13 days, and the rainfall amount rise's start could be observed as well in July. The number of sun hours (without clouds) starts to descent in this month.
August weather
The day temperature starts to descent, the value of this measure is 20.9 °C (69.6 °F) in Keystone, and the beginning of the descent of the night temperature could be noticed too in this month. The maximum of the number of rainy days is observable, with its value of 13 days, and the rainfall amount is on its maximum as well, with its value being 58 mm (2.30 in). The descent of the number of sun hours (without clouds) can be observed, the value of this measure is 9 hours. The wind speed reaches its minimum in August.
September weather
The day temperature descents similarly to the previous month, with its value being 17.3 °C (63.1 °F) in Keystone, and the descent of the night temperature can be observed as well, its value is 0.2 °C (32.4 °F). The number of rainy days descent's start could be observed, with its value of 10 days, and the rainfall amount descent's start could be observed too, the value of this measure is 41 mm (1.60 in). The number of sun hours (without clouds) descents similarly to the previous month, with its value of 8 hours.
October weather
The minimum of the number of rainy days can be noticed, its value is 8 days in Keystone, and the rainfall amount is on its minimum too, with its value of 33 mm (1.31 in). The descent of the day temperature can be observed, and the night temperature continues to descent too, its value is -4.8 °C (23.4 °F). The number of sun hours (without clouds) descents similarly to the previous month, its value is 8 hours.
November weather
The number of rainy days starts to rise, its value is 9 days in Keystone. The night temperature continues to descent, its value is -9.9 °C (14.2 °F), and the day temperature descents similarly to the previous month as well, with its value being 4.1 °C (39.4 °F). The descent of the number of sun hours (without clouds) can be observed, with its value being 6 hours.
December weather
The night temperature descents similarly to the previous month, with its value being -14.4 °C (6.1 °F) in Keystone, while the minimum of the day temperature is observable, with its value being 0.1 °C (32.2 °F). The humidity reaches its maximum, its value is 56 %. The number of sun hours (without clouds) reaches its minimum, the value of this measure is 6 hours. The minimum of the day length can be noticed, its value is 9 hours.
FAQs
Is there a dry season in Keystone in May?
No, May is not a dry month in Keystone, expect rain approximately 12 days in a month.
What is the temperature in Keystone during the day in June?
The average daily temperature in June in Keystone is 19.0 °C (66.2 °F). Nice temperature for walking around the city or on the beach, but you will probably get cold soon when wearing a swimsuit. When walking around all day, people used to cold conditions, pull out their shorts and get rid of their sweaters. On some days, when spending time in the direct sun, sunscreen can be useful, especially for people with more sensitive skin.
Is July part of the wet season in Keystone?
No, there is no wet season in July in Keystone - you can expect 13 days of rain during the month.
What is the air temperature in August in Keystone at night?
The average night temperature in August in Keystone is 3.9 °C (39.0 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating.
How many days of precipitation on average can I expect in Keystone in September?
There are 10 days, which are rainy in September in Keystone, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.3 days of the week, or in general - 32 % days.
Are there good conditions to visit in Keystone in October?
Keystone can be visited in October - the weather will be moderate. A relatively low temperature of 11.1 °C (52.0 °F) may be ideal for walking or outdoor activities, but some people may have a different idea of the holiday. The night temperature of -4.8 °C (23.4 °F) is not inviting for evening and night activities except for visiting a bar and having beer or two.