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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is another subzero cold winter month in Saint Marys, Ohio, with an average temperature fluctuating between 19.8°F (-6.8°C) and 31.6°F (-0.2°C). During the coldest month, January, temperatures average a high of 31.6°F (-0.2°C) and a low of 19.8°F (-6.8°C). Weather in January »
Weather in February
February, the last month of the winter in Saint Marys, is a cold month, with temperature in the range of an average high of 36.1°F (2.3°C) and an average low of 23.5°F (-4.7°C). In the transition from January to February, Saint Marys reports an average high-temperature of a cold 36.1°F (2.3°C), indicating a close resemblance to the prior month. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Saint Marys, Ohio, with temperature in the range of an average high of 47.1°F (8.4°C) and an average low of 32.2°F (0.1°C). Entering March, Saint Marys sees a temperature rise, with the average high-temperature advancing from February's wintry 36.1°F (2.3°C) to a chilly 47.1°F (8.4°C). Weather in March »
Weather in April
April is a refreshing spring month in Saint Marys, Ohio, with an average temperature varying between 42.4°F (5.8°C) and 59.5°F (15.3°C). With the onset of April, Saint Marys's weather sees a temperature rise, transitioning from a chilly 47.1°F (8.4°C) in March to a mild 59.5°F (15.3°C). Weather in April »
Weather in May
May, the last month of the spring in Saint Marys, is an agreeable month, with an average temperature ranging between max 70.3°F (21.3°C) and min 53.8°F (12.1°C). An increase in the average high-temperature marks May, moving from April's refreshing 59.5°F (15.3°C) to a pleasant 70.3°F (21.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Saint Marys, Ohio, with an average temperature fluctuating between 77.7°F (25.4°C) and 61.2°F (16.2°C). The onset of June introduces a subtle rise in the average high-temperature, nudging from a pleasant 70.3°F (21.3°C) in May to a moderately hot 77.7°F (25.4°C). Weather in June »
Weather in July
July, like June, in Saint Marys, Ohio, is a moderately hot summer month, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 81°F (27.2°C). Temperature records mark July as the warmest month, with highs averaging 81°F (27.2°C) and lows at 64°F (17.8°C). In July, the average heat index is appraised at a hot 86°F (30°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Saint Marys, Ohio, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 61.2°F (16.2°C). August's presence records an average high-temperature of a still warm 79°F (26.1°C), closely mirroring July's climate. Weather in August »
Weather in September
September, the first month of the autumn in Saint Marys, is still a warm month, with an average temperature ranging between min 55.8°F (13.2°C) and max 73.8°F (23.2°C). The advent of September signifies a minor shift to an average high-temperature of a still warm 73.8°F (23.2°C), aligning closely with August. Weather in September »
Weather in October
October, like September, in Saint Marys, Ohio, is another enjoyable autumn month, with an average temperature fluctuating between 45.9°F (7.7°C) and 61.7°F (16.5°C). Setting in of October comes with a decrease in the average high-temperature, moving from a moderately hot 73.8°F (23.2°C) in September to a comfortable 61.7°F (16.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Saint Marys, is another chilly month, with an average temperature ranging between min 35.1°F (1.7°C) and max 48.4°F (9.1°C). November weather is marked by a drop in the average high-temperature, falling from a refreshing 61.7°F (16.5°C) in October to a chilly 48.4°F (9.1°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Saint Marys, Ohio, with temperature in the range of an average low of 27.5°F (-2.5°C) and an average high of 37.8°F (3.2°C). The shift from November to December corresponds with a decrease in the average high-temperature, down to an icy 37.8°F (3.2°C) from a chilly 48.4°F (9.1°C). Weather in December »
Updated: Feb 13, 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
What is the coldest month in Saint Marys?
January is the coldest month, with an average high-temperature of 31.6°F (-0.2°C) and an average low-temperature of 19.8°F (-6.8°C).
What are the most humid months in Saint Marys?
January, February and December, with an average relative humidity of 83%, are most humid months.
How many days does it rain in Saint Marys?
In Saint Marys, during the entire year, the rain falls for 161.4 days and collects up to 29.25" (743mm) of precipitation.
When does it snow in Saint Marys?
Months with snowfall in Saint Marys, Ohio, are January through May, October through December.
How much does it snow in Saint Marys?
Throughout the year, in Saint Marys, Ohio, there are 44.7 snowfall days, and 12.32" (313mm) of snow is accumulated.
What is the month with the least sunshine in Saint Marys?
January has the least sunshine of the year in Saint Marys, with an average of 3.4h of sunshine.
What is the driest month in Saint Marys?
February is the month with the least rainfall. Rain falls for 7.9 days and accumulates 1.85" (47mm) of precipitation.
What is the snowiest month in Saint Marys?
The month with the most snowfall in Saint Marys is February, when snow falls for 11.2 days and typically aggregates up to 3.82" (97mm) of snow.
When is Daylight Saving Time (DST) in Saint Marys?
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.
What is the wettest month in Saint Marys?
May is the month with the most rainfall in Saint Marys, Ohio. Rain falls for 18.8 days and accumulates 3.5" (89mm) of precipitation.
When it does not snow in Saint Marys?
In Saint Marys, snow does not fall in June through September.
When are the longest days in Saint Marys?
June has the longest days of the year, with an average of 15h and 0min of daylight.
What time of the year is the hottest in Saint Marys?
With average high and low temperatures of 81°F (27.2°C) and 64°F (17.8°C) respectively, July is Saint Marys's warmest month.
What month has the most sunshine in Saint Marys?
The month with the most sunshine in Saint Marys is July, with an average of 10h of sunshine.
When is the highest UV index in Saint Marys?
The months with the highest UV index are July and August, with an average maximum UV index of 6.
What is the least humid month in Saint Marys?
The least humid month in Saint Marys, Ohio, is October, with an average relative humidity of 75%.
What is the month with the shortest days in Saint Marys?
December has the shortest days of the year in Saint Marys, Ohio, with an average of 9h and 18min of daylight.
What is the month with the lowest UV index in Saint Marys?
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
Saint Marys, OH
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.6°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Saint Marys, OH
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.11"Hg
The months with the highest atmospheric pressure are January and November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Saint Marys, OH
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.4mph - Average wind speed in March:
9.8mph - Average wind speed in April:
10mph - Average wind speed in May:
8.3mph - Average wind speed in June:
7.4mph
- Average wind speed in July:
6.1mph - Average wind speed in August:
6mph - Average wind speed in September:
6.7mph - Average wind speed in October:
8.7mph - Average wind speed in November:
9.6mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Saint Marys, OH
The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (75%).
Average rainfall
Saint Marys, OH
- Average rainfall in January:
1.97" - Average rainfall in February:
1.85" - Average rainfall in March:
2.76" - Average rainfall in April:
2.95" - Average rainfall in May:
3.5" - Average rainfall in June:
3.43"
- Average rainfall in July:
2.72" - Average rainfall in August:
2.28" - Average rainfall in September:
1.93" - Average rainfall in October:
2.01" - Average rainfall in November:
1.97" - Average rainfall in December:
1.89"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (1.85").
Average rainfall days
Saint Marys, OH
- Average rainfall days in January:
7.4 days - Average rainfall days in February:
7.9 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
18.8 days - Average rainfall days in June:
18.2 days
- Average rainfall days in July:
17.1 days - Average rainfall days in August:
15.4 days - Average rainfall days in September:
13.3 days - Average rainfall days in October:
13.5 days - Average rainfall days in November:
10.3 days - Average rainfall days in December:
9.9 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (7.4 days).
Average snowfall
Saint Marys, OH
- Average snowfall in January:
2.95" - Average snowfall in February:
3.82" - Average snowfall in March:
1.61" - Average snowfall in April:
0.39" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Saint Marys, OH
- Average snowfall days in January:
12.4 days - Average snowfall days in February:
11.2 days - Average snowfall days in March:
5.8 days - Average snowfall days in April:
1.5 days - Average snowfall days in May:
0.1 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:
3.3 days - Average snowfall days in December:
9.9 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Saint Marys, OH
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
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 18min).
- Average sunshine in January:
3h and 2min - Average sunshine in February:
4h and 2min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 1min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 4min - Average sunshine in September:
7h and 5min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 1min - Average sunshine in December:
3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days
Saint Marys, OH
- Average sunshine days in January:
11.4 days - Average sunshine days in February:
10.4 days - Average sunshine days in March:
12.9 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
10 days - Average sunshine days in June:
9.4 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
12.7 days - Average sunshine days in September:
13.8 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
16.6 days - Average sunshine days in December:
12.6 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (9.4 days).
Average UV index
Saint Marys, OH
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Saint Marys, OH
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Saint Marys, OH
The months with the highest visibility are February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, August and September (5mi).
Saint Marys, Ohio, USA
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