Climate and monthly weather forecastSaint Joseph, MO
Climate and monthly weather forecast
The climate of Saint Joseph
The prevailing climate classification of Saint Joseph, a city located in Missouri, USA, is Dfa, according to the Köppen climate classification. This designation represents a humid continental climate, characterized by no dry season and hot summers. Analyzing a year-round weather shows a noticeable variety in climate parameters.Temperature ranges in Saint Joseph throughout the year are from a high of 86°F (30°C) to a low of 20.3°F (-6.5°C). Summer months bring the warmest conditions, with temperature peaking at 86°F (30°C) in July, while the coldest month is January with a low temperature down to 20.3°F (-6.5°C). Rainfall varies significantly, with the highest recorded in May at 4.02" (102mm) and the lowest in December at 1.06" (27mm). The city experiences snowfall mostly from December to February with January receiving the most snow at 2.68" (68mm).
Relative humidity levels are generally high. The highest relative humidity is 79% in June, while the lowest is 69% in October. Wind speeds vary moderately over the year, observing the highest wind speed of 9.9mph (15.9km/h) in March and the lowest of 6.4mph (10.3km/h) in July and August.
The best time to visit Saint Joseph
For visitors hoping to enjoy the most pleasant weather conditions, the most favourable time to visit Saint Joseph is between May and September. During this period, temperatures range between a comfortable 63.5°F (17.5°C) and 86°F (30°C). Sunshine hours are also at their highest during this period, hitting a peak of 10.4 hours in July, providing ample daylight for outdoor activities. Rainfall is scattered and can be experienced during these months, but it does not usually disrupt daily activities.The worst time to visit Saint Joseph
The least desirable time to visit Saint Joseph might be the winter months from December to February when temperatures can fall below freezing and snowfall is common. Januray experiences the lowest temperatures, falling to 20.3°F (-6.5°C), and the highest snowfall at 2.68" (68mm).Spring weather in Saint Joseph
Spring in Saint Joseph, from March to May, is a time of moderate change, marked by increasing temperatures and rainfall. During this season, temperatures generally range from 52.5°F (11.4°C) to 72.3°F (22.4°C). March sees the highest wind speeds of 9.9mph (15.9km/h), whereas May has the highest rainfall of 4.02" (102mm).Summer weather in Saint Joseph
Summer, from June to August, in Saint Joseph is characterized by hot conditions and high humidity. Expected temperatures during these months range from a high of 86°F (30°C) in July to a low of 65.7°F (18.7°C) in June. Relative humidity reaches its yearly peak of 79% in June. Despite these conditions, wind speeds drop to their lowest at 6.4mph (10.3km/h), providing some respite.Autumn weather in Saint Joseph
Autumn weather, from September to November, in Saint Joseph carries a moderate climate with temperatures typically ranging from 77.9°F (25.5°C) in September to 35.4°F (1.9°C) in November. Rainfall lessens during this season, reaching its annual lowest of 1.22" (31mm) in November.Winter weather in Saint Joseph
Winter, from December to February, is the coldest season in Saint Joseph, with temperatures ranging from 38.3°F (3.5°C) in December to 20.3°F (-6.5°C) in January. Snowfall is most common during this period, reaching its peak at 2.68" (68mm) in January. Despite the cold weather, sunlight hours remain relatively consistent at around 5 hours per day throughout the season.Weather in January
The beginning of the year in Saint Joseph, Missouri, USA brings winter weather, typically paired with chilly temperatures and snow. The climate transitions from the freezing December climate to the somewhat milder February weather. Weather in January »Weather in February
In February, the weather conditions in Saint Joseph continue the winter season with temperatures slowly increasing. The shift from the freezing conditions of January towards the beginning of spring in March begins to take effect. Weather in February »Weather in March
March signifies a transition period in Saint Joseph from the chill of winter to the warmth of spring. Lingering cold weather from February gives way to more temperate conditions, leading into April's typical spring climate. The area experiences a high of 52.5°F (11.4°C) with 1.97" (50mm) of rainfall, an indication of the shift from snow to rain. Weather in March »Weather in April
April heralds the full bloom of spring in Saint Joseph, with the lingering reminders of March’s erratic weather becoming a thing of the past. The climate steadily warms in anticipation of the impending summer months. A stat proving this transitional climate would be the 63.5°F (17.5°C) high temperature with nearly 3" (76mm) of rainfall. Weather in April »Weather in May
May proffers an increase in temperature as Saint Joseph advances towards the summer season. Moving away from the cooler, wet climate of April, May sees a rise in mercury levels. The city basks in a high temperature of 72.3°F (22.4°C), accompanied by maximum rainfall of 4.02" (102mm), denoting the end of spring. Weather in May »Weather in June
The onset of June marks the beginning of the summer season in Saint Joseph with temperatures noticeably rising from May. The climate in June differs significantly from the cooling conditions of May, leaning unmistakably towards the hotter weather of July. Weather in June »Weather in July
July is typically the hottest month of the year in Saint Joseph, with temperatures peaking and rainfall patterns changing. The climate in July is noticeably warmer than that of June or the ensuing August. The weather records an 86°F (30°C) temperature high which is the maximum for the year. Weather in July »Weather in August
August represents a turning point in Saint Joseph's weather, with the hot temperatures of July giving way to the milder weather of September. The city experiences a considerable dip in temperature alongside a decrease in rainfall. Weather in August »Weather in September
September in Saint Joseph ushers in the fall season, a noticeable respite after hot summer days. Swaying away from the high August temperatures, the climate in September is far closer to October's which is typically cooler. With a 77.9°F (25.5°C) highest temperature in September, the city begins to cool down. Weather in September »Weather in October
October sees a substantial decrease in temperature as Saint Joseph transitions further into Autumn. The conditions in October diverge significantly from September's milder weather, preparing for November's colder climate. The maximum temperature dips to 64.4°F (18°C), signifying the onset of colder months. Weather in October »Weather in November
November marks a noticeable transition towards the cold winter season in Saint Joseph, with the autumn foliage giving way to more bare landscapes. The moderate climate of October yields to the colder weather patterns typical of December. Weather in November »Weather in December
The weather in December in Saint Joseph signifies the full onset of the winter season, with the temperatures reaching yearly lows. The climate sees a significant shift from the creeping cold of November to the freezing temperatures that January brings along. Weather in December »Updated: Jul 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 stands out as Saint Joseph's coldest month, with an average high-temperature of 34.7°F (1.5°C) and a low-temperature of 20.3°F (-6.5°C).
Throughout the year, there are 133.5 rainfall days, and 27.28" (693mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
The month with the most snowfall is January, when snow falls for 6.5 days and typically aggregates up to 2.68" (68mm) of snow.
In Saint Joseph, Missouri, during the entire year, snow falls for 22.7 days and aggregates up to 8.03" (204mm) of snow.
With an average of 5h of sunshine, January has the least sunshine of the year.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the least rainfall is February, when the rain falls for 5.6 days and typically collects 0.87" (22mm) of precipitation.
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.
May is the month with the most rainfall in Saint Joseph. Rain falls for 16.5 days and accumulates 4.02" (102mm) of precipitation.
With an average relative humidity of 79%, June is the most humid month.
In Saint Joseph, snow does not fall in June through September.
June has the longest days of the year, with an average of 14h and 54min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
With its average high temperature of 86°F (30°C) and a low of 67.6°F (19.8°C), July is regarded as the warmest month in Saint Joseph.
With an average of 10.4h of sunshine, July has the most sunshine of the year.
October is the least humid month, with an average relative humidity of 69%.
With an average of 9h and 24min of daylight, December has the shortest days of the year.
Average temperature
Saint Joseph, MO
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (34.7°F).
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure
Saint Joseph, MO
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.95"Hg - Average pressure in September:
30"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Saint Joseph, MO
- Average wind speed in January:
9.7mph - Average wind speed in February:
9.9mph - Average wind speed in March:
9.9mph - Average wind speed in April:
9.8mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.4mph - Average wind speed in September:
7.3mph - Average wind speed in October:
8.7mph - Average wind speed in November:
9.5mph - Average wind speed in December:
9.2mph
The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.4mph).
Average humidity
Saint Joseph, MO
The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall
Saint Joseph, MO
- Average rainfall in January:
0.94" - Average rainfall in February:
0.87" - Average rainfall in March:
1.97" - Average rainfall in April:
2.95" - Average rainfall in May:
4.02" - Average rainfall in June:
3.58"
- Average rainfall in July:
3.11" - Average rainfall in August:
2.83" - Average rainfall in September:
2.48" - Average rainfall in October:
2.24" - Average rainfall in November:
1.22" - Average rainfall in December:
1.06"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days
Saint Joseph, MO
- Average rainfall days in January:
4.8 days - Average rainfall days in February:
5.6 days - Average rainfall days in March:
12.4 days - Average rainfall days in April:
13.9 days - Average rainfall days in May:
16.5 days - Average rainfall days in June:
16 days
- Average rainfall days in July:
14.4 days - Average rainfall days in August:
13.9 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
10 days - Average rainfall days in November:
7.4 days - Average rainfall days in December:
6.1 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (4.8 days).
Average snowfall
Saint Joseph, MO
- Average snowfall in January:
2.68" - Average snowfall in February:
2.28" - Average snowfall in March:
0.67" - Average snowfall in April:
0.28" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is January (2.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Saint Joseph, MO
- Average snowfall days in January:
6.5 days - Average snowfall days in February:
6.3 days - Average snowfall days in March:
2.8 days - Average snowfall days in April:
0.7 days - Average snowfall days in May:
0.2 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:
0.5 days - Average snowfall days in November:
1.2 days - Average snowfall days in December:
4.5 days
The month with the highest number of snowfall days is January (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Saint Joseph, MO
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
5h and 0min - Average sunshine in February:
5h and 36min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 30min - Average sunshine in May:
8h and 42min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 18min - Average sunshine in October:
6h and 12min - Average sunshine in November:
5h and 54min - Average sunshine in December:
5h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days
Saint Joseph, MO
- Average sunshine days in January:
20.3 days - Average sunshine days in February:
17.3 days - Average sunshine days in March:
15.5 days - Average sunshine days in April:
14.2 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
11.2 days
- Average sunshine days in July:
13 days - Average sunshine days in August:
14.4 days - Average sunshine days in September:
16.2 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
20.6 days - Average sunshine days in December:
21.1 days
The month with the most sunshine days is December (21.1 days).
The month with the least sunshine days is June (11.2 days).
Average UV index
Saint Joseph, MO
The months with the highest UV index are 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
Saint Joseph, MO
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility
Saint Joseph, 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).
