Saint Peters
Missouri, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Saint Peters, MO

January, the same as December, is another cold winter month in Saint Peters, Missouri, with average temperature fluctuating between 37.4°F (3°C) and 23.9°F (-4.5°C). The coldest month is January, with an average high-temperature of 37.4°F (3°C) and an average low-temperature of 23.9°F (-4.5°C). Weather in January »

The last month of the winter, February, is another cold month in Saint Peters, Missouri, with average temperature ranging between max 42.1°F (5.6°C) and min 27.1°F (-2.7°C). In February, the average high-temperature is practically the same as in January - a still cold 42.1°F (5.6°C). Weather in February »

The first month of the spring, March, is a fresh month in Saint Peters, Missouri, with temperature in the range of an average high of 54.1°F (12.3°C) and an average low of 37.9°F (3.3°C). In March, the average high-temperature increases, from a cold 42.1°F (5.6°C) in February, to a fresh 54.1°F (12.3°C). Weather in March »

April is an enjoyable spring month in Saint Peters, Missouri, with temperature in the range of an average low of 47.3°F (8.5°C) and an average high of 65.3°F (18.5°C). In April, the average high-temperature rises, from a fresh 54.1°F (12.3°C) in March, to an enjoyable 65.3°F (18.5°C). Weather in April »

May, the last month of the spring, in Saint Peters, is a moderately hot month, with average temperature fluctuating between 74.7°F (23.7°C) and 57°F (13.9°C). In May, the average high-temperature rises, from a comfortable 65.3°F (18.5°C) in April, to a moderately hot 74.7°F (23.7°C). Weather in May »

June, the first month of the summer, in Saint Peters, is also a moderately hot month, with average temperature fluctuating between 66°F (18.9°C) and 84°F (28.9°C). In June, the average high-temperature increases, from 74.7°F (23.7°C) in May, to a still warm 84°F (28.9°C). Weather in June »

July is a hot summer month in Saint Peters, Missouri, with average temperature varying between 87.1°F (30.6°C) and 68.4°F (20.2°C). The warmest month is July, with an average high-temperature of 87.1°F (30.6°C) and an average low-temperature of 68.4°F (20.2°C). In July, the average heat index is calculated to a sweltering 101.5°F (38.6°C). Weather in July »

August, the last month of the summer, in Saint Peters, is another warm month, with average temperature ranging between min 66.4°F (19.1°C) and max 85.3°F (29.6°C). In Saint Peters, the average high-temperature in August is relatively the same as in July - a warm 85.3°F (29.6°C). Weather in August »

September, the first month of the autumn, in Saint Peters, is still a warm month, with temperature in the range of an average low of 59.7°F (15.4°C) and an average high of 79.5°F (26.4°C). In September, the average high-temperature marginally drops, from 85.3°F (29.6°C) in August, to a still warm 79.5°F (26.4°C). Weather in September »

October, the same as September, is another comfortable autumn month in Saint Peters, Missouri, with average temperature varying between 48.4°F (9.1°C) and 66°F (18.9°C). In Saint Peters, Missouri, the average high-temperature in October decreases, from a moderately hot 79.5°F (26.4°C) in September, to a comfortable 66°F (18.9°C). Weather in October »

November, the last month of the autumn, in Saint Peters, is also a fresh month, with average temperature varying between 53.2°F (11.8°C) and 37.6°F (3.1°C). In Saint Peters, the average high-temperature decreases, from an enjoyable 66°F (18.9°C) in October, to a cool 53.2°F (11.8°C). Weather in November »

December, the first month of the winter, in Saint Peters, is also a wintry month, with average temperature fluctuating between 30°F (-1.1°C) and 41.9°F (5.5°C). In Saint Peters, the average high-temperature decreases, from a fresh 53.2°F (11.8°C) in November, to a wintry 41.9°F (5.5°C). Weather in December »

What is the coldest month in Saint Peters?

With an average high-temperature of 37.4°F (3°C) and an average low-temperature of 23.9°F (-4.5°C), January is the coldest month in Saint Peters, Missouri.

How much does it rain in Saint Peters?

Throughout the year, in Saint Peters, Missouri, there are 133.4 rainfall days, and 20.98" (533mm) of precipitation is accumulated.

When does it snow in Saint Peters?

Months with snowfall are January through March, November and December.

How many days does it snow in Saint Peters?

Throughout the year, in Saint Peters, Missouri, there are 19.4 snowfall days, and 4.92" (125mm) of snow is accumulated.

What is the month with the least sunshine in Saint Peters?

January has the least sunshine of the year, with an average of 4.7h of sunshine.

When is the lowest UV index in Saint Peters?

Months with the lowest UV index in Saint Peters, Missouri, are January, February, November and December, with an average maximum UV index of 2.

What is the driest month in Saint Peters?

The month with the least rainfall is February when the rain falls for 6.7 days and typically collects 1.06" (27mm) of precipitation.

What is the snowiest month in Saint Peters?

The month with the most snowfall is February when snow falls for 5.8 days and typically aggregates up to 1.65" (42mm) of snow.

What is the wettest month in Saint Peters?

The month with the most rainfall in Saint Peters is April when the rain falls for 13.4 days and typically aggregates up to 2.48" (63mm) of precipitation.

When it does not snow in Saint Peters?

In Saint Peters snow does not fall in April through October.

What is the most humid month in Saint Peters?

May is the most humid month in Saint Peters, with an average relative humidity of 78%.

When is the highest UV index in Saint Peters?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

When are the longest days in Saint Peters?

With an average of 14.9h of daylight, June has the longest days of the year in Saint Peters, Missouri.

What is the month with the most sunshine in Saint Peters?

June and July, with an average of 10.5h of sunshine, are months with the most sunshine in Saint Peters, Missouri.

What is the warmest month in Saint Peters?

With an average high-temperature of 87.1°F (30.6°C) and an average low-temperature of 68.4°F (20.2°C), July is the warmest month in Saint Peters, Missouri.

What is the least humid month in Saint Peters?

The least humid month in Saint Peters, Missouri, is October, with an average relative humidity of 71%.

What is the month with the shortest days in Saint Peters?

The month with the shortest days in Saint Peters is December, with an average of 9.5h of daylight.
Average temperature - Saint Peters, MO
Average rainfall - Saint Peters, MO
Average rainfall days - Saint Peters, MO

The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (6.7 days).

Average snowfall - Saint Peters, MO

The month with the highest snowfall is February (42mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days - Saint Peters, MO

Months with the highest number of snowfall days are January and February (5.8 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine - Saint Peters, MO

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

Months with the most sunshine are June and July (Average sunshine: 10.5h).
The month with the least sunshine is January (Average sunshine: 4.7h).

Average UV index - Saint Peters, MO