Climate and monthly weather forecastSaint Mary, KY
Climate and monthly weather forecast
Weather in January
January, the same as December, is an icy winter month in Saint Mary, Kentucky, with an average temperature varying between 39.9°F (4.4°C) and 27.1°F (-2.7°C). During the coldest month, January, temperatures average a high of 39.9°F (4.4°C) and a low of 27.1°F (-2.7°C). Weather in January »Weather in February
February, the last month of the winter in Saint Mary, is a chilly month, with an average temperature ranging between max 45.1°F (7.3°C) and min 30.4°F (-0.9°C). With the transition into February, Saint Mary notes an average high-temperature of a frosty 45.1°F (7.3°C), closely resembling January. Weather in February »Weather in March
March, the first month of the spring in Saint Mary, is a cool month, with an average temperature varying between 38.3°F (3.5°C) and 55°F (12.8°C). With the onset of March, Saint Mary sees a temperature rise, with the average high-temperature moving from February's chilly 45.1°F (7.3°C) to a cool 55°F (12.8°C). Weather in March »Weather in April
April is a refreshing spring month in Saint Mary, Kentucky, with an average temperature varying between 47.3°F (8.5°C) and 66.4°F (19.1°C). April's arrival is marked by an increase in the average high-temperature, moving from a fresh 55°F (12.8°C) in March to an enjoyable 66.4°F (19.1°C). Weather in April »Weather in May
May, the last month of the spring in Saint Mary, is a warm month, with temperature in the range of an average high of 75°F (23.9°C) and an average low of 56.3°F (13.5°C). Saint Mary's transition into May sees a mild rise in the average high-temperature, edging from a refreshing 66.4°F (19.1°C) in April to a moderately hot 75°F (23.9°C). Weather in May »Weather in June
June, the first month of the summer in Saint Mary, is also a moderately hot month, with an average temperature fluctuating between 82.9°F (28.3°C) and 63.1°F (17.3°C). June's arrival brings a modest temperature shift, moving from a moderately hot 75°F (23.9°C) in May to a still warm 82.9°F (28.3°C). Weather in June »Weather in July
July, like June, in Saint Mary, Kentucky, is a moderately hot summer month, with an average temperature varying between 66.7°F (19.3°C) and 85.6°F (29.8°C). July, with average temperatures reaching a high of 85.6°F (29.8°C) and a low of 66.7°F (19.3°C), is the warmest month. During July, the heat index is appraised at a fiery hot 96.8°F (36°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Saint Mary, Kentucky, with an average temperature varying between 65.1°F (18.4°C) and 84.7°F (29.3°C). Entering August, Saint Mary's average high-temperature reads a still moderately hot 84.7°F (29.3°C), indicating a close resemblance to the previous month's climate. Weather in August »Weather in September
September, the first month of the autumn in Saint Mary, is still a warm month, with an average temperature fluctuating between 59.4°F (15.2°C) and 78.6°F (25.9°C). September is characterized by a mild reduction in the average high-temperature, from 84.7°F (29.3°C) in August to a still warm 78.6°F (25.9°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Saint Mary, Kentucky, with an average temperature ranging between max 66.6°F (19.2°C) and min 48.2°F (9°C). As September shifts into October, a slight alteration in temperatures is observed, with average highs reducing from a warm 78.6°F (25.9°C) to a refreshing 66.6°F (19.2°C). Weather in October »Weather in November
November, the last month of the autumn in Saint Mary, is also a fresh month, with temperature in the range of an average low of 37.9°F (3.3°C) and an average high of 54.1°F (12.3°C). The decrease of average high-temperatures is mild in November, with a decline from a refreshing 66.6°F (19.2°C) in October to a fresh 54.1°F (12.3°C). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Saint Mary, Kentucky, with an average temperature varying between 45.1°F (7.3°C) and 33.1°F (0.6°C). December's onset brings a slight change in high-temperatures, falling from a fresh 54.1°F (12.3°C) in November to a frosty 45.1°F (7.3°C). Weather in December »Updated: Aug 14, 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
Saint Mary records the coldest temperatures in January, averaging a high of 39.9°F (4.4°C) and a low of 27.1°F (-2.7°C).
Throughout the year, there are 163.3 rainfall days, and 32.09" (815mm) of precipitation is accumulated.
January through April, October through December are months with snowfall in Saint Mary.
In Saint Mary, during the entire year, snow falls for 27.3 days and aggregates up to 7.91" (201mm) of snow.
The month with the least sunshine is January, with an average of 4.3h of sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
The months with the highest humidity are February and December, with an average relative humidity of 80%.
February is the month with the most snowfall. Snow falls for 7.3 days and accumulates 2.17" (55mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
May through September are months without snowfall.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
June has the longest days of the year, with an average of 14h and 42min of daylight.
June has the most sunshine of the year in Saint Mary, with an average of 10.2h of sunshine.
July tends to be the warmest month, with temperatures averaging a daily high of 85.6°F (29.8°C) and a low of 66.7°F (19.3°C).
The month with the most rainfall is July, when the rain falls for 17.6 days and typically aggregates up to 3.27" (83mm) of precipitation.
September is the month with the least rainfall. Rain falls for 14.1 days and accumulates 2.13" (54mm) of precipitation.
With an average relative humidity of 75%, October is the least humid month.
December has the shortest days of the year, with an average of 9h and 36min of daylight.
Average temperature
Saint Mary, KY
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (39.9°F).
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure
Saint Mary, KY
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
29.99"Hg - Average pressure in June:
29.96"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.15"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed
Saint Mary, KY
- Average wind speed in January:
8.5mph - Average wind speed in February:
8.5mph - Average wind speed in March:
8.2mph - Average wind speed in April:
8.1mph - Average wind speed in May:
6.6mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5mph - Average wind speed in August:
5mph - Average wind speed in September:
5.3mph - Average wind speed in October:
6.6mph - Average wind speed in November:
7.2mph - Average wind speed in December:
7.8mph
The windiest months (with the highest average wind speed) are January and February (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity
Saint Mary, KY
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (75%).
Average rainfall
Saint Mary, KY
- Average rainfall in January:
2.17" - Average rainfall in February:
3.11" - Average rainfall in March:
2.72" - Average rainfall in April:
2.87" - Average rainfall in May:
3.07" - Average rainfall in June:
3.07"
- Average rainfall in July:
3.27" - Average rainfall in August:
2.64" - Average rainfall in September:
2.13" - Average rainfall in October:
2.17" - Average rainfall in November:
2.32" - Average rainfall in December:
2.56"
The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days
Saint Mary, KY
- Average rainfall days in January:
10.3 days - Average rainfall days in February:
10.6 days - Average rainfall days in March:
13.4 days - Average rainfall days in April:
16 days - Average rainfall days in May:
17.4 days - Average rainfall days in June:
15 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
14.1 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
12.2 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (9.6 days).
Average snowfall
Saint Mary, KY
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Saint Mary, KY
- Average snowfall days in January:
7.8 days - Average snowfall days in February:
7.3 days - Average snowfall days in March:
4.2 days - Average snowfall days in April:
0.6 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:
0.3 days - Average snowfall days in November:
2.1 days - Average snowfall days in December:
5 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Saint Mary, KY
- Average daylight in January:
9h and 54min - 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 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 30min - 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 12min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 18min - Average sunshine in February:
5h and 24min - Average sunshine in March:
5h and 54min - Average sunshine in April:
7h and 48min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 36min - Average sunshine in September:
8h and 12min - Average sunshine in October:
6h and 48min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days
Saint Mary, KY
- Average sunshine days in January:
13.7 days - Average sunshine days in February:
11.9 days - Average sunshine days in March:
13.2 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
12.4 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
13.1 days - Average sunshine days in September:
15 days - Average sunshine days in October:
18.2 days - Average sunshine days in November:
17.4 days - Average sunshine days in December:
14.6 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is July (11 days).
Average UV index
Saint Mary, KY
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
Saint Mary, KY
The months with the most cloud cover are January and February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Saint Mary, KY
The months with the highest visibility are March, April, June, August, October, November and December (6mi).
The months with the lowest visibility are January, February, May, July and September (5mi).
