Climate and monthly weather forecastBoston, IN
Climate and monthly weather forecast
Weather in January
January, like December, in Boston, Indiana, is another cold winter month, with an average temperature ranging between min 20.8°F (-6.2°C) and max 32.5°F (0.3°C). January brings the lowest temperatures, with an average high of 32.5°F (0.3°C) and an average low of 20.8°F (-6.2°C). Weather in January »Weather in February
February, the last month of the winter in Boston, is also a wintry month, with an average temperature ranging between max 37.2°F (2.9°C) and min 24.3°F (-4.3°C). Upon the onset of February, Boston witnesses an average high-temperature of a still icy 37.2°F (2.9°C), showing a close resemblance to the prior month. Weather in February »Weather in March
March, the first month of the spring in Boston, is a chilly month, with an average temperature fluctuating between 48.7°F (9.3°C) and 33.4°F (0.8°C). As Boston transitions into March, the average high-temperature is observed to rise from a wintry 37.2°F (2.9°C) in February to a frosty 48.7°F (9.3°C). Weather in March »Weather in April
April is a moderate spring month in Boston, Indiana, with temperature in the range of an average low of 43.7°F (6.5°C) and an average high of 60.4°F (15.8°C). The start of April signals an increase in the average high-temperature, moving from a frosty 48.7°F (9.3°C) in March to a mild 60.4°F (15.8°C). Weather in April »Weather in May
May, the last month of the spring in Boston, is an agreeable month, with an average temperature varying between 71.1°F (21.7°C) and 54.5°F (12.5°C). As April transitions into May, a change in temperatures is observed, with average highs moving from a mild 60.4°F (15.8°C) to a pleasant 71.1°F (21.7°C). Weather in May »Weather in June
June, the first month of the summer in Boston, is a warm month, with temperature in the range of an average low of 61.7°F (16.5°C) and an average high of 78.1°F (25.6°C). With the transition into June, Boston experiences a subtle uplift in average high-temperatures, adjusting from a pleasant 71.1°F (21.7°C) in May to a warm 78.1°F (25.6°C). Weather in June »Weather in July
July, like June, in Boston, Indiana, is another warm summer month, with temperature in the range of an average low of 64.4°F (18°C) and an average high of 80.8°F (27.1°C). With average high and low temperatures of 80.8°F (27.1°C) and 64.4°F (18°C) respectively, July is Boston's warmest month. July's mean heat index is appraised at a tropical 86°F (30°C). Weather in July »Weather in August
August, the last month of the summer in Boston, is another warm month, with an average temperature fluctuating between 62.1°F (16.7°C) and 79.3°F (26.3°C). August's onset sees an average high-temperature of a still moderately hot 79.3°F (26.3°C), exhibiting a slight fluctuation from the previous month. Weather in August »Weather in September
September, the first month of the autumn in Boston, is also a moderately hot month, with an average temperature varying between 56.7°F (13.7°C) and 74.7°F (23.7°C). The beginning of September reveals an average high-temperature of a still moderately hot 74.7°F (23.7°C), showing minimal deviation from the previous month. Weather in September »Weather in October
October, like September, in Boston, Indiana, is another refreshing autumn month, with temperature in the range of an average high of 62.1°F (16.7°C) and an average low of 46°F (7.8°C). In Boston, the average high-temperature in October decreases from a moderately hot 74.7°F (23.7°C) in September to a comfortable 62.1°F (16.7°C). Weather in October »Weather in November
November, the last month of the autumn in Boston, is also a frosty month, with temperature in the range of an average high of 48.9°F (9.4°C) and an average low of 34.7°F (1.5°C). Boston's November weather features a mild decline in high-temperatures, reducing from a comfortable 62.1°F (16.7°C) in October to a chilly 48.9°F (9.4°C). Weather in November »Weather in December
December, the first month of the winter in Boston, is also a wintry month, with temperature in the range of an average low of 28.2°F (-2.1°C) and an average high of 38.1°F (3.4°C). The arrival of December signals a shift in temperature, down from a frosty 48.9°F (9.4°C) in November to an icy 38.1°F (3.4°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Boston, IN
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (32.5°F).
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure
Boston, IN
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.1"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:
30.03"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.12"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Boston, IN
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.2mph - Average wind speed in March:
9.8mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
5.9mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.5mph - Average wind speed in October:
8.4mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.5mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity
Boston, IN
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (75%).
Average rainfall
Boston, IN
- Average rainfall in January:
1.57" - Average rainfall in February:
1.57" - Average rainfall in March:
2.17" - Average rainfall in April:
2.28" - Average rainfall in May:
3.11" - Average rainfall in June:
2.52"
- Average rainfall in July:
2.13" - Average rainfall in August:
2.01" - Average rainfall in September:
1.57" - Average rainfall in October:
1.57" - Average rainfall in November:
1.5" - Average rainfall in December:
1.73"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days
Boston, IN
- Average rainfall days in January:
8.1 days - Average rainfall days in February:
7.4 days - Average rainfall days in March:
13.3 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
19.3 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
14.5 days - Average rainfall days in September:
13.3 days - Average rainfall days in October:
12.5 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
9.8 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (7.4 days).
Average snowfall
Boston, IN
The month with the highest snowfall is December (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Boston, IN
- Average snowfall days in January:
9.2 days - Average snowfall days in February:
7.3 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
1 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:
0.4 days - Average snowfall days in November:
2.8 days - Average snowfall days in December:
7.9 days
The month with the highest number of snowfall days is January (9.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Boston, IN
- 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:
3h and 42min - Average sunshine in February:
4h and 54min - Average sunshine in March:
5h and 54min - Average sunshine in April:
7h and 24min - Average sunshine in May:
8h and 42min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 6min - Average sunshine in October:
6h and 30min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Boston, IN
- Average sunshine days in January:
15.1 days - Average sunshine days in February:
14.5 days - Average sunshine days in March:
13.5 days - Average sunshine days in April:
13.1 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
11.6 days
- Average sunshine days in July:
10.7 days - Average sunshine days in August:
13 days - Average sunshine days in September:
13.9 days - Average sunshine days in October:
16.7 days - Average sunshine days in November:
18.7 days - Average sunshine days in December:
15.4 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (9.8 days).
Average UV index
Boston, IN
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, October, November and December (UV index 2).
Average cloud cover
Boston, IN
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Boston, IN
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).





