Monthly weather forecast and climate
Riley, KS

January, the same as December, is a wintry winter month in Riley, Kansas, with temperature in the range of an average high of 38.8°F (3.8°C) and an average low of 23°F (-5°C). With an average high-temperature of 38.8°F (3.8°C) and an average low-temperature of 23°F (-5°C), January is the coldest month. Weather in January »

The last month of the winter, February, is also a wintry month in Riley, Kansas, with average temperature fluctuating between 42.3°F (5.7°C) and 26.1°F (-3.3°C). In Riley, Kansas, the average high-temperature is practically the same as in January - a still cold 42.3°F (5.7°C). Weather in February »

March, the first month of the spring, in Riley, is a mild month, with average temperature fluctuating between 37.4°F (3°C) and 55.6°F (13.1°C). In Riley, the average high-temperature rises, from a cold 42.3°F (5.7°C) in February, to a mild 55.6°F (13.1°C). Weather in March »

April in Riley, Kansas, is a comfortable spring month, with average temperature ranging between max 64.9°F (18.3°C) and min 45.5°F (7.5°C). In Riley, the average high-temperature in April increases, from a moderate 55.6°F (13.1°C) in March, to an enjoyable 64.9°F (18.3°C). Weather in April »

May, the last month of the spring, in Riley, is an agreeable month, with average temperature ranging between max 73.2°F (22.9°C) and min 55°F (12.8°C). In Riley, Kansas, the average high-temperature marginally rises, from a comfortable 64.9°F (18.3°C) in April, to a pleasant 73.2°F (22.9°C). Weather in May »

The first month of the summer, June, is a moderately hot month in Riley, Kansas, with temperature in the range of an average high of 85.8°F (29.9°C) and an average low of 67.1°F (19.5°C). In Riley, the average high-temperature increases, from an agreeable 73.2°F (22.9°C) in May, to a warm 85.8°F (29.9°C). Weather in June »

July in Riley, Kansas, is a tropical summer month, with temperature in the range of an average high of 89.6°F (32°C) and an average low of 69.8°F (21°C). The warmest month is July, with an average high-temperature of 89.6°F (32°C) and an average low-temperature of 69.8°F (21°C). In July, the average heat index is calculated to a torrid 102.7°F (39.3°C). Weather in July »

The last month of the summer, August, is another tropical month in Riley, Kansas, with average temperature fluctuating between 87.4°F (30.8°C) and 66.9°F (19.4°C). In August, the average high-temperature is almost the same as in July - a still tropical 87.4°F (30.8°C). Weather in August »

The first month of the autumn, September, is also a moderately hot month in Riley, Kansas, with temperature in the range of an average high of 79.7°F (26.5°C) and an average low of 60.4°F (15.8°C). In Riley, the average high-temperature slightly decreases, from a tropical 87.4°F (30.8°C) in August, to a warm 79.7°F (26.5°C). Weather in September »

October, like September, in Riley, Kansas, is another comfortable autumn month, with temperature in the range of an average low of 48.2°F (9°C) and an average high of 65.7°F (18.7°C). In October, the average high-temperature decreases, from a warm 79.7°F (26.5°C) in September, to an enjoyable 65.7°F (18.7°C). Weather in October »

The last month of the autumn, November, is another cool month in Riley, Kansas, with average temperature ranging between min 36.9°F (2.7°C) and max 53.6°F (12°C). In November, the average high-temperature decreases, from a comfortable 65.7°F (18.7°C) in October, to a cool 53.6°F (12°C). Weather in November »

December, the first month of the winter, in Riley, is also a wintry month, with average temperature varying between 26.4°F (-3.1°C) and 41°F (5°C). In December, the average high-temperature decreases, from a cool 53.6°F (12°C) in November, to a wintry 41°F (5°C). Weather in December »

What is the coldest month in Riley?

With an average high-temperature of 38.8°F (3.8°C) and an average low-temperature of 23°F (-5°C), January is the coldest month.

How many days does it rain in Riley?

Throughout the year, in Riley, Kansas, there are 114.8 rainfall days, and 21.1" (536mm) of precipitation is accumulated.

What is the driest month in Riley?

January is the month with the least rainfall in Riley, Kansas. Rain falls for 3.7 days and accumulates 0.63" (16mm) of precipitation.

When does it snow in Riley?

Months with snowfall in Riley are January through April, October through December.

How much does it snow in Riley?

In Riley, Kansas, during the entire year, snow falls for 17.5 days, and aggregates up to 7.32" (186mm) of snow.

What is the month with the lowest UV index in Riley?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the snowiest month in Riley?

February is the month with the most snowfall in Riley, Kansas. Snow falls for 4.8 days and accumulates 2.24" (57mm) of snow.

What is the most humid month in Riley?

The most humid month is May, with an average relative humidity of 74%.

What is the rainiest month in Riley?

The month with the most rainfall in Riley is May when the rain falls for 14.3 days and typically aggregates up to 3.98" (101mm) of precipitation.

When it does not snow in Riley?

In Riley snow does not fall in May through September.

When are the longest days in Riley?

The month with the longest days in Riley, Kansas, is June, with an average of 14.9h of daylight.

What is the month with the most sunshine in Riley?

Months with the most sunshine in Riley are June and July, with an average of 10.9h of sunshine.

What is the month with the highest UV index in Riley?

With an average maximum UV index of 7, June is the month with the highest UV index.

What is the warmest month in Riley?

With an average high-temperature of 89.6°F (32°C) and an average low-temperature of 69.8°F (21°C), July is the warmest month.

What is the least humid month in Riley?

October is the least humid month in Riley, with an average relative humidity of 64%.

What is the month with the shortest days in Riley?

With an average of 9.4h of daylight, December has the shortest days of the year in Riley, Kansas.

What is the month with the least sunshine in Riley?

The month with the least sunshine in Riley is December, with an average of 5.7h of sunshine.
Average pressure - Riley, KS

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.85").

Average wind speed - Riley, KS

The windiest month (with the highest average wind speed) is April (11.8mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).

Average rainfall - Riley, KS
Average rainfall days - Riley, KS

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (3.7 days).

Average snowfall - Riley, KS
Average snowfall days - Riley, KS

The month with the highest number of snowfall days is February (4.8 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine - Riley, KS

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

Months with the most sunshine are June and July (Average sunshine: 10.9h).
The month with the least sunshine is December (Average sunshine: 5.7h).

Average sunshine days - Riley, KS

The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is May (13.8 days).

Average visibility - Riley, KS

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).