Climate and monthly weather forecastFlorissant, MO
Climate and monthly weather forecast
The climate of Florissant
Florissant, situated in the state of Missouri, USA, experiences a predominately Köppen climate Cfa classification. Characterized by no dry season, this climate type can be denoted as a humid subtropical. Weather conditions throughout the year exhibit a wide variety of characteristics, ranging from clear to cloudy, calm to windy, and dry to wet. Average high temperature over the course of the year varies from a chilly 37.2°F (2.9°C) in January to a warm 86.5°F (30.3°C) in July. Similarly, average low temperature spans a range from 24.1°F (-4.4°C) in January to 68.7°F (20.4°C) in July.Rainfall exhibits significant variation too, from a lowest monthly average of 1.69" (43mm) in February to a peak of 3.82" (97mm) in May. Remaining fairly consistent across the year, the relative humidity stays within a range of 70% to 78%. Wind speed averages also fluctuate, but not drastically, from 5.6mph (9km/h) in July to 9.3mph (15km/h) in January. Periods of sunshine expand with the increasing temperatures, leading to the longest hours of daylight in June and July, with a value of 14.9 hours on average. The cloud cover, however, decreases during this period, making it the sunniest part of the year.
An exceptional occurrence is the absence of snowfall from April to October, with the highest snowfall registered at 2.95" (75mm) in February. Wind gusts show substantial variation as well, from a low of 9.1mph (14.6km/h) in July to a peak of 14.7mph (23.7km/h) in January.
The best time to visit Florissant
Considering the comfortable weather and ample daylight, the best period to visit Florissant lies between May and September. The average high temperature from May to September falls between 74.8°F (23.8°C) and 85.3°F (29.6°C), providing balmy weather ideal for outdoor activities. In these months, rainfall is somewhat consistent, allowing visitors to plan their activities accordingly. By May, the average hours of sunshine per day also undergo an increase from the usual 6.5 hours to 9.5 hours. These factors together provide the most conducive weather for tourists to explore Florissant.The worst time to visit Florissant
Visiting Florissant from December to February could mean braving cold temperatures and reduced daylight. In these months, the average high temperature decreases significantly, falling to a low of 37.2°F (2.9°C) in January. Reduced visibility average of 6 miles during these months could also hamper travel plans. Additionally, the average hours of daylight also reach their minimum of 9.5 to 9.8 hours, limiting the time available for sightseeing and other activities.Spring weather in Florissant
Spring in Florissant witnesses a gradual increase in temperatures, changing from an average high of 54°F (12.2°C) in March to 74.8°F (23.8°C) by May. Spring months also see an uptick in rainfall, particularly in April, with an average of 3.54" (90mm). The daylight hours gradually increase from 12 hours in March to 14.3 hours in May, providing ample sunshine for outdoor activities.Summer weather in Florissant
Summer brings about the warmest period of the year, with the temperature ranging between 83.8°F (28.8°C) and 86.5°F (30.3°C) from June to August. Rainfall remains fairly consistent, with an average of 3.54" (90mm) in June to 3.27" (83mm) by August. The average hours of daylight peak at this period - 14.9 hours in June dropping to 13.6 hours in August. Even the wind speed averages are at their lowest, maintaining a soothing breeze all day long.Autumn weather in Florissant
Autumn transitions Florissant into cooler temperatures, receding from 79.5°F (26.4°C) in September to 52.9°F (11.6°C) in November. Rainfall sees a decrease moving from 2.01" (51mm) in September to 1.81" (46mm) in November. The length of daylight reduces in line with the temperatures, experiencing a decline from 12.4 hours in September to 10.1 hours in November.Winter weather in Florissant
Winter in Florissant witnesses the coldest temperatures of the year, with averages plummeting to a low of 24.1°F (-4.4°C) in January. Snowfall occurs from November to March, peaking in February with an average of 2.95" (75mm). Despite the cold and snow, winter also brings about strong winds, witnessing an escalation from November through January. The average wind gusts heighten from 14mph (22.5km/h) in November to 14.7mph (23.7km/h) by January. The daylight hours also decrease to their minimum level of approximately 9.5 hours in December to January.Weather in January
Florissant, Missouri starts the year with characteristic winter weather, and January is one of the coldest months, with increased levels of humidity. Snowfall is a common occurrence, with notable accumulations of 2.32" (59mm). It is not the best time for outdoor plans as the month experiences a decrease in daylight hours. Weather in January »Weather in February
Weather in February shows a mild change from January, particularly with modest improvements in temperature. The volume of snowfall experiences a rise to 2.95" (75mm), though, making February the month with the highest snow accumulation. Weather in February »Weather in March
March ushers in more pleasant weather conditions, denoting the onset of spring. The month is defined by an increased number of daylight hours and relative warmth compared to the previous months. Despite this, certain winter elements like snowfall persist albeit decreasing to 1.06" (27mm). Weather in March »Weather in April
Weather in April denotes a clear shift from winter to spring conditions. Noticeable change includes the absence of snowfall, making it the first month of the year without any snow. The weather becomes more favorable for outdoor activities, and Florissant brings out its spring charm with blooming flowers and trees. Weather in April »Weather in May
May brings about a culmination of spring and hints at the onset of summer. The city receives the highest level of rainfall, recording 3.82" (97mm), causing a rise in humidity. Despite this, temperatures are on a steady increase, and the increased daylight hours favor outdoor activities. Weather in May »Weather in June
June welcomes summer in Florissant, which means longer daylight hours and an overall warmer climate. The most striking change from May is the surge in temperatures. Residents can enjoy outdoor activities to the fullest, given the dry, sunny weather. Weather in June »Weather in July
July is peak summer in Florissant, with the city experiencing its highest temperatures. The mercury often rises to a scorching 86.5°F (30.3°C), giving the month its character. Despite this, there is a drop in rain, leading to dry conditions which are typical of summer months. Weather in July »Weather in August
Weather in August maintains the summer high temperatures similar to those experienced in July. The period remains characterized by long daylight hours and high UV index. Although the month witnesses less rainfall, humidity remains constant, so staying cool becomes a priority. Weather in August »Weather in September
September ushers in fall, with noticeable dips in temperature. The month experiences a decrease in rainfall, measuring 2.01" (51mm). The falling leaves create a scenic beauty, making it a favorite time for photographers and nature enthusiasts. Weather in September »Weather in October
October sees a clear transition to fall in Florissant. The city enters the phase of comfortably cool temperatures. Higher wind speeds become commonplace as the transition happens. Lovely fall weather, coupled with the splendid color show of changing leaves, makes October a charm. In October, the average high-temperature goes from a warm 79.5°F (26.4°C) in September to an enjoyable 65.7°F (18.7°C). Weather in October »Weather in November
November is distinct with the return of chillier nights and shorter daylight hours. The month sees a mild recurrence of snowfall, recording 0.47" (12mm), signaling the onset of winter. With Thanksgiving around the corner, light snowfall adds an extra layer of beauty to the autumnal setting. Weather in November »Weather in December
December marks the full swing of winter in Florissant. As the last month of the year, it sees an increase in snowfall to 2.01" (51mm), serving as a quintessential sign of the approach of the holiday season. Despite the increased snowfall and chill, the Christmas spirit fills the air. Weather in December »Updated: Aug 24, 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
January proves to be the coldest month in Florissant, recording an average maximum temperature of 37.2°F (2.9°C) and a minimum temperature of 24.1°F (-4.4°C).
In Florissant, during the entire year, the rain falls for 149 days and collects up to 31.61" (803mm) of precipitation.
Months with snowfall are January through March, November and December.
In Florissant, during the entire year, snow falls for 19.5 days and aggregates up to 8.82" (224mm) of snow.
The months with the lowest UV index in Florissant are January, February, November and December, with an average maximum UV index of 2.
The month with the least rainfall is February, when the rain falls for 7.7 days and typically collects 1.69" (43mm) of precipitation.
The month with the most snowfall is February, when snow falls for 5.4 days and typically aggregates up to 2.95" (75mm) of snow.
The month with the least sunshine in Florissant is February, with an average of 4.6h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
In Florissant, Missouri, snow does not fall in April through October.
The most humid month in Florissant is May, with an average relative humidity of 78%.
The month with the most rainfall is May, when the rain falls for 17.5 days and typically aggregates up to 3.82" (97mm) of precipitation.
May through August, with an average maximum UV index of 6, are months with the highest UV index.
June has the longest days of the year, with an average of 14h and 48min of daylight.
June and July, with an average of 10.5h of sunshine, are months with the most sunshine.
In Florissant, July is identified by the average highest temperatures, reaching a peak of 86.5°F (30.3°C) and a low of 68.7°F (20.4°C).
October is the least humid month, with an average relative humidity of 70%.
The month with the shortest days is December, with an average of 9h and 30min of daylight.
Average temperature
Florissant, MO
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.2°F).
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure
Florissant, MO
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Florissant, MO
- Average wind speed in January:
9.3mph - Average wind speed in February:
9.2mph - Average wind speed in March:
9mph - Average wind speed in April:
9mph - Average wind speed in May:
7.3mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.6mph - Average wind speed in August:
5.7mph - Average wind speed in September:
6.1mph - Average wind speed in October:
7.9mph - Average wind speed in November:
8.6mph - Average wind speed in December:
8.7mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity
Florissant, MO
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Florissant, MO
- Average rainfall in January:
1.85" - Average rainfall in February:
1.69" - Average rainfall in March:
2.4" - Average rainfall in April:
3.54" - Average rainfall in May:
3.82" - Average rainfall in June:
3.54"
- Average rainfall in July:
3.15" - Average rainfall in August:
3.27" - Average rainfall in September:
2.01" - Average rainfall in October:
2.48" - Average rainfall in November:
1.81" - Average rainfall in December:
2.05"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is February (1.69").
Average rainfall days
Florissant, MO
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
7.7 days - Average rainfall days in March:
14.6 days - Average rainfall days in April:
15.2 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
15.3 days
- Average rainfall days in July:
16.9 days - Average rainfall days in August:
14.2 days - Average rainfall days in September:
12.4 days - Average rainfall days in October:
10.6 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
8.2 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (7.3 days).
Average snowfall
Florissant, MO
The month with the highest snowfall is February (2.95").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Florissant, MO
- Average snowfall days in January:
6.7 days - Average snowfall days in February:
5.4 days - Average snowfall days in March:
2.2 days - Average snowfall days in April:
0.1 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:
0.1 days - Average snowfall days in November:
1.3 days - Average snowfall days in December:
3.7 days
The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Florissant, MO
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 42min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 36min - Average sunshine in May:
9h and 30min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 18min - Average sunshine in September:
9h and 30min - Average sunshine in October:
6h and 12min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 54min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days
Florissant, MO
- Average sunshine days in January:
18.8 days - Average sunshine days in February:
15.9 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
13.5 days - Average sunshine days in May:
11 days - Average sunshine days in June:
11.7 days
- Average sunshine days in July:
12 days - Average sunshine days in August:
14.5 days - Average sunshine days in September:
15.2 days - Average sunshine days in October:
19 days - Average sunshine days in November:
18.1 days - Average sunshine days in December:
18.9 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is May (11 days).
Average UV index
Florissant, MO
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Florissant, MO
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility
Florissant, MO
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
