Climate and monthly weather forecastUnion Star, MO
Climate and monthly weather forecast
Weather in January
January, like December, in Union Star, Missouri, is another cold winter month, with an average temperature ranging between max 34.2°F (1.2°C) and min 20.3°F (-6.5°C). January, known for its average high temperature of 34.2°F (1.2°C) and an average low temperature of 20.3°F (-6.5°C), is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is also a wintry month in Union Star, Missouri, with an average temperature ranging between min 23.5°F (-4.7°C) and max 38.3°F (3.5°C). Union Star observes a minor difference in average high-temperatures between January's 34.2°F (1.2°C) and February's 38.3°F (3.5°C). Weather in February »Weather in March
March, the first month of the spring in Union Star, is a cool month, with an average temperature fluctuating between 52°F (11.1°C) and 35.2°F (1.8°C). The average high-temperature increases in March, moving from a wintry 38.3°F (3.5°C) in February to a fresh 52°F (11.1°C). Weather in March »Weather in April
April is a comfortable spring month in Union Star, Missouri, with an average temperature fluctuating between 62.8°F (17.1°C) and 44.4°F (6.9°C). An increase in the average high-temperature marks April, moving from March's cool 52°F (11.1°C) to a refreshing 62.8°F (17.1°C). Weather in April »Weather in May
May, the last month of the spring in Union Star, is an agreeable month, with an average temperature fluctuating between 72.1°F (22.3°C) and 55.2°F (12.9°C). The start of May is characterized by an increase in the average high-temperature, transitioning from a comfortable 62.8°F (17.1°C) in April to a pleasant 72.1°F (22.3°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Union Star, Missouri, with an average temperature varying between 64.9°F (18.3°C) and 82.6°F (28.1°C). The beginning of June signals a rise in the average high-temperature, moving from a pleasant 72.1°F (22.3°C) in May to a warm 82.6°F (28.1°C). Weather in June »Weather in July
July, like June, in Union Star, Missouri, is another warm summer month, with an average temperature fluctuating between 85.5°F (29.7°C) and 67.6°F (19.8°C). In Union Star, the month of July is known for its highest average temperatures, reaching a high of 85.5°F (29.7°C) and a low of 67.6°F (19.8°C). For July, the heat index is estimated at a very hot 96.8°F (36°C). Weather in July »Weather in August
August, the last month of the summer in Union Star, is also a moderately hot month, with an average temperature fluctuating between 64.6°F (18.1°C) and 83.8°F (28.8°C). August's advent notes a subtle adjustment in average high-temperature to a still warm 83.8°F (28.8°C) from July. Weather in August »Weather in September
September, the first month of the autumn in Union Star, is still a warm month, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 57.9°F (14.4°C). In September, the average high-temperature marginally decreases from a warm 83.8°F (28.8°C) in August to a still moderately hot 77.5°F (25.3°C). Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Union Star, Missouri, with temperature in the range of an average low of 46.4°F (8°C) and an average high of 63.5°F (17.5°C). The commencement of October involves a temperature shift, with the average high-temperature dropping from a moderately hot 77.5°F (25.3°C) in September to a refreshing 63.5°F (17.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Union Star, Missouri, with temperature in the range of an average low of 35.1°F (1.7°C) and an average high of 50.9°F (10.5°C). The shift from October to November corresponds with a decrease in the average high-temperature, down to a fresh 50.9°F (10.5°C) from a refreshing 63.5°F (17.5°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Union Star, Missouri, with an average temperature varying between 25°F (-3.9°C) and 38.3°F (3.5°C). Union Star observes a minor decrease in the average high-temperature with the arrival of December, falling from November's cool 50.9°F (10.5°C) to an icy 38.3°F (3.5°C). Weather in December »Updated: Aug 12, 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
The month of January, characterized by an average high of 34.2°F (1.2°C) and a low of 20.3°F (-6.5°C), is recognized as the coldest.
The months with the least rainfall are January and February Rain falls for 3.8 days and accumulates 0.94" (24mm) of rain.
Throughout the year, there are 132.3 rainfall days, and 27.28" (693mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
January is the month with the most snowfall. Snow falls for 7 days and accumulates 3.43" (87mm) of snow.
In Union Star, during the entire year, snow falls for 25.5 days and aggregates up to 10.91" (277mm) of snow.
With an average of 4.8h 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.
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.
The month with the most rainfall is May, when the rain falls for 17.1 days and typically aggregates up to 4.02" (102mm) of precipitation.
June is the most humid month in Union Star, with an average relative humidity of 79%.
June through September are months without snowfall.
The month with the longest days is June, with an average of 15h and 0min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
In Union Star, the peak temperatures are generally noted in July, averaging a high of 85.5°F (29.7°C) and a low of 67.6°F (19.8°C).
The month with the most sunshine is July, with an average of 10.3h of sunshine.
October and November, with an average relative humidity of 70%, are the least humid months.
December has the shortest days of the year, with an average of 9h and 24min of daylight.
Average temperature
Union Star, MO
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (34.2°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
Union Star, 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
Union Star, 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:
6.5mph - Average wind speed in September:
7.4mph - 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 month (with the lowest average wind speed) is July (6.4mph).
Average humidity
Union Star, MO
The month with the highest relative humidity is June (79%).
The months with the lowest relative humidity are October and November (70%).
Average rainfall
Union Star, MO
- Average rainfall in January:
0.94" - Average rainfall in February:
0.94" - Average rainfall in March:
1.89" - Average rainfall in April:
2.87" - Average rainfall in May:
4.02" - Average rainfall in June:
3.78"
The wettest month (with the highest rainfall) is May (4.02").
The driest months (with the least rainfall) are January and February (0.94").
Average rainfall days
Union Star, MO
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
5 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
14.1 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
15.7 days - Average rainfall days in August:
14.6 days - Average rainfall days in September:
12.2 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
6.7 days - Average rainfall days in December:
5.5 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (3.8 days).
Average snowfall
Union Star, MO
- Average snowfall in January:
3.43" - Average snowfall in February:
2.91" - Average snowfall in March:
0.94" - Average snowfall in April:
0.55" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is January (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Union Star, MO
- Average snowfall days in January:
7 days - Average snowfall days in February:
7.2 days - Average snowfall days in March:
3.7 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:
1.3 days - Average snowfall days in December:
4.9 days
The month with the highest number of snowfall days is February (7.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Union Star, 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:
15h and 0min
- 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: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 48min - Average sunshine in February:
5h and 30min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 24min - Average sunshine in May:
8h and 36min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 18min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 48min - Average sunshine in December:
5h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days
Union Star, MO
- Average sunshine days in January:
20.4 days - Average sunshine days in February:
16.9 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
13.5 days - Average sunshine days in May:
11.4 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
12.2 days - Average sunshine days in August:
13.5 days - Average sunshine days in September:
16.3 days - Average sunshine days in October:
19.6 days - Average sunshine days in November:
21.1 days - Average sunshine days in December:
21 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (10.8 days).
Average UV index
Union Star, 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
Union Star, MO
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility
Union Star, 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).
