Climate and monthly weather forecastMason, OH
Climate and monthly weather forecast
The climate of Mason
Mason, Ohio, USA, is defined by a humid subtropical climate, also known as Köppen climate classification Cfa. This climate type is characterized by no dry season, with precipitation consistently distributed throughout the year. Mason is nestled in a region where weather features include hot summers and cold winters.Throughout the year, temperatures fluctuate significantly. High temperatures range from 35.1°F (1.7°C) in the coldest months to 82.8°F (28.2°C) in the warmest. The lowest temperatures show a similar variation, with January registering the coldest at 22.6°F (-5.2°C), and July sees the warmest with a low of 65.1°F (18.4°C). Relative humidity remains relatively steady, hovering between 74% and 81%.
In terms of precipitation, the year involves a consistently wet climate, with rainfall amounts ranging from 1.42" (36mm) per month to its peak at 2.95" (75mm). Accompanying these rainfalls are the number of rainy days, with May presenting the maximum at 18.1 days, while November records the least at 8.1 days. Snow also graces the scene; however, this is limited to the winter months with the highest snowfall rate of 2.05" (52mm) in February.
Mason enjoys a variation between 9.8 hours to 14.9 hours of daylight per day throughout the year, accompanying an average of 3.9 hours of sunshine in the coldest month and stretching to 10.3 hours at the height of summer. A year-round UV index between 2 and 6 evidences the moderate yet varying solar exposure experienced in this locale.
The best time to visit Mason
Visitors seeking to maximize their outdoor activities in Mason should consider the summer months when sunshine hours peak at 10.3 hours per day. In June, July, and August, temperatures stay well within the comfortable range from 72.5°F (22.5°C) to 82.8°F (28.2°C), providing enjoyable conditions. Nevertheless, keeping an eye on relatively higher rainfall during the summer, specifically in May with 2.95" (75mm) of rainfall, might be advisable for planning outdoor ventures.The worst time to visit Mason
Cold weather travelers might want to avoid the winter months from December to February when the temperatures dip the lowest from 22.6°F (-5.2°C) to 39.6°F (4.2°C). The frigid weather conditions, accompanied by the maximum snowfall of up to 2.05" (52mm) in February, could potentially hinder outdoor activities.Spring weather in Mason
Spring, between March and May, brings with it a significant change in climate from the colder months. High temperatures progressively rise from 50.2°F (10.1°C) in March to 72.5°F (22.5°C) by May. Likewise, the lows climb from a chilly 35.1°F (1.7°C) up to a more moderate 55.6°F (13.1°C). Precipitation remains steady with rainfall ranging between 2.01" (51mm) and 2.95" (75mm), and March recording the highest snowfall of the spring months at 2.05" (52mm).Summer weather in Mason
June heralds the start of summer, showering Mason with sunlight for up to 10.3 hours per day. High temperatures hover between 72.5°F (22.5°C) to 82.8°F (28.2°C), while evening temperatures cool down to between 55.6°F (13.1°C) and 65.1°F (18.4°C). Despite the sunny days, summer also brings rainfall, averaging between 2.28" (58mm) and 2.95" (75mm) per month.Autumn weather in Mason
Autumn months witness a gradual decrease in temperature, with September highs at 76.6°F (24.8°C) dropping to 50.9°F (10.5°C) by November. The complementary low temperatures fluctuate between 58.1°F (14.5°C) and 36.3°F (2.4°C). Rainfall is moderate to low, ranging from 1.42" (36mm) to 1.61" (41mm), making autumn an ideal season to enjoy the fall colors.Winter weather in Mason
Winters in Mason come with noticeably cold conditions. From December to February, high temperatures dance between 35.1°F (1.7°C) and 39.6°F (4.2°C), and the lows can chill down from 22.6°F (-5.2°C) to 26.1°F (-3.3°C). Rainfall stays between 1.61" (41mm) to 1.93" (49mm) across these months, and snowfalls up to 2.05" (52mm) are a common sight, particularly in February.Weather in January
Winter is clearly in full swing in Mason, Ohio during January, characterized by its cold temperatures and significant snowfall. Despite this, the amount of snowfall decreases slightly compared to the previous month with totals going down from 2.05" (52mm) in December to 1.57" (40mm) in January. Weather in January »Weather in February
February feels slightly warmer than January but still falls within the winter bracket of Mason's weather. The temperatures range from 26.1°F (-3.3°C) to 39.6°F (4.2°C). Snowfall is a common sight with the daylight hours gradually increasing, however, the days remain predominantly cold and dark. Weather in February »Weather in March
The transition from winter to spring can be felt in Mason during March. Although the temperatures remain low, there is an evident change in the weather pattern with no recorded snowfall. Long-term residents of Mason welcome March as a harbinger of the spring. Weather in March »Weather in April
The warmth of spring envelops Mason in April. The weather transitions, seeing the average low temperature raise to 44.8°F (7.1°C) from 35.1°F (1.7°C) in the previous month, signaling the end of chilling weather and the start of a warmer season. Weather in April »Weather in May
The comfortable ambiance of spring makes way for the anticipation of summer in Mason during May. It showers a bit more come this time of the year, hence residents are often seen carrying umbrellas. The city looks resplendent with blooming flora and fauna under the bright sunshine. Weather in May »Weather in June
June brings the long-awaited summer season to Mason, Ohio. The highest temperature recorded reaches up to 79.7°F (26.5°C), signaling the start of beach and pool season. The comfortable warmth makes it the perfect time for cookouts, and other outdoor activities. Weather in June »Weather in July
The height of summer can be felt in July, having the highest recorded temperature at 82.8°F (28.2°C). Sunbathing and swimming are popular activities among both residents and tourists. Despite long daylight hours, the humidity remains relatively high, making July the most humid month of the year. Weather in July »Weather in August
Summer continues in August with similar temperature to July. Although humidity decreases slightly, August is still considerably more humid compared to the upcoming months, maintaining a comfortable warmth. Rainfall reduces in this month, making it a drier period compared to other summer months. Weather in August »Weather in September
The herald of autumn, September, paves the way for a shift in the weather pattern in Mason, Ohio. The temperature remains comfortable, yet noticeably cooler than August with an average high of 76.6°F (24.8°C). The bright sunshine gradually gives way to overcast skies, making September a rather cloudy month. Weather in September »Weather in October
October in Mason possesses the quintessential autumnal weather. The climate becomes even cooler with the high temperature dropping to 63.9°F (17.7°C) from 76.6°F (24.8°C) in the previous month. The skies become more overcast, and it is common to experience a gentle breeze. Weather in October »Weather in November
The transition from autumn to winter begins in November at Mason, Ohio. Cloud cover increases and even though rainfall remains consistent, there's a distinct drop in average temperatures. The gentle breeze of October gives way to gusty wind conditions that signify the onset of winter. Weather in November »Weather in December
December welcomes the arrival of winter in Mason, Ohio with the average high temperature dropping to 40.8°F (4.9°C). Snowfall is a common sight, with snowfall days increasing drastically to 6.5 days from 2.4 days in November. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Mason, OH
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (35.1°F).
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure
Mason, OH
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed
Mason, OH
- Average wind speed in January:
9.3mph - Average wind speed in February:
9.2mph - Average wind speed in March:
8.8mph - Average wind speed in April:
8.9mph - Average wind speed in May:
7.1mph - Average wind speed in June:
6.4mph
- Average wind speed in July:
5.3mph - Average wind speed in August:
5.3mph - Average wind speed in September:
6mph - Average wind speed in October:
7.5mph - Average wind speed in November:
8.1mph - Average wind speed in December:
8.5mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity
Mason, OH
The months with the highest relative humidity are January, February and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Mason, OH
- Average rainfall in January:
1.61" - Average rainfall in February:
2.01" - Average rainfall in March:
2.01" - Average rainfall in April:
2.36" - Average rainfall in May:
2.95" - Average rainfall in June:
2.28"
- Average rainfall in July:
2.48" - Average rainfall in August:
1.73" - Average rainfall in September:
1.42" - Average rainfall in October:
1.46" - Average rainfall in November:
1.61" - Average rainfall in December:
1.93"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days
Mason, OH
- Average rainfall days in January:
8.5 days - Average rainfall days in February:
8.3 days - Average rainfall days in March:
13.6 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
18.1 days - Average rainfall days in June:
14.4 days
- Average rainfall days in July:
16.1 days - Average rainfall days in August:
14.1 days - Average rainfall days in September:
12.6 days - Average rainfall days in October:
11.4 days - Average rainfall days in November:
8.1 days - Average rainfall days in December:
10.9 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is November (8.1 days).
Average snowfall
Mason, OH
The months with the highest snowfall are February and March (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Mason, OH
- Average snowfall days in January:
8.3 days - Average snowfall days in February:
7.2 days - Average snowfall days in March:
4.7 days - Average snowfall days in April:
0.8 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:
0.2 days - Average snowfall days in November:
2.4 days - Average snowfall days in December:
6.5 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Mason, OH
- Average daylight in January:
9h and 48min - 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 36min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 30min
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 30min).
- Average sunshine in January:
3h and 54min - Average sunshine in February:
5h and 6min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 36min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 18min - Average sunshine in October:
6h and 42min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 12min
The months with the most sunshine are June, July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Mason, OH
- Average sunshine days in January:
15.3 days - Average sunshine days in February:
14.6 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
13.2 days - Average sunshine days in May:
10.9 days - Average sunshine days in June:
12.5 days
- Average sunshine days in July:
12.2 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
18 days - Average sunshine days in November:
19.2 days - Average sunshine days in December:
14.5 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (10.9 days).
Average UV index
Mason, OH
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
Mason, OH
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility
Mason, OH
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).





