Climate and monthly weather forecastSwan, IN
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Swan, Indiana, with an average temperature fluctuating between 18.7°F (-7.4°C) and 30.2°F (-1°C). The coldest temperatures occur during January, when averages reach a peak of 30.2°F (-1°C) and a low of 18.7°F (-7.4°C). Weather in January »Weather in February
February, the last month of the winter in Swan, is a wintry month, with an average temperature varying between 21.6°F (-5.8°C) and 34.2°F (1.2°C). In February, Swan notes an average high-temperature of a wintry 34.2°F (1.2°C), hardly different from the preceding month. Weather in February »Weather in March
March, the first month of the spring in Swan, is a frosty month, with an average temperature fluctuating between 31.1°F (-0.5°C) and 45.7°F (7.6°C). The shift from February to March sees an increase in the average high-temperature, transitioning from a cold 34.2°F (1.2°C) to a chilly 45.7°F (7.6°C). Weather in March »Weather in April
April in Swan, Indiana, is a moderate spring month, with an average temperature varying between 57.7°F (14.3°C) and 40.6°F (4.8°C). As April begins, there is an increase in the average high-temperature, moving from a frosty 45.7°F (7.6°C) in March to a refreshing 57.7°F (14.3°C). Weather in April »Weather in May
May, the last month of the spring in Swan, is a pleasant month, with an average temperature fluctuating between 69.4°F (20.8°C) and 52.3°F (11.3°C). The beginning of May signals a rise in the average high-temperature, moving from a mild 57.7°F (14.3°C) in April to a pleasant 69.4°F (20.8°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Swan, Indiana, with an average temperature varying between 77.5°F (25.3°C) and 60.4°F (15.8°C). June brings a slight rise in Swan's average high-temperature, moving from an agreeable 69.4°F (20.8°C) in May to a moderately hot 77.5°F (25.3°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Swan, Indiana, with an average temperature fluctuating between 80.2°F (26.8°C) and 63.3°F (17.4°C). July, with average temperatures reaching a high of 80.2°F (26.8°C) and a low of 63.3°F (17.4°C), is the warmest month. Weather in July »Weather in August
August, the last month of the summer in Swan, is another warm month, with an average temperature varying between 78.6°F (25.9°C) and 61.3°F (16.3°C). Swan notes an average high-temperature of a still warm 78.6°F (25.9°C) in August, hardly diverging from July. Weather in August »Weather in September
September, the first month of the autumn in Swan, is still a pleasant month, with an average temperature varying between 55.2°F (12.9°C) and 73°F (22.8°C). In September, the average high-temperature marginally decreases from a moderately hot 78.6°F (25.9°C) in August to a pleasant 73°F (22.8°C). Weather in September »Weather in October
October, like September, is a moderate autumn month in Swan, Indiana, with an average temperature varying between 60.6°F (15.9°C) and 45.1°F (7.3°C). October brings a decrease in the average high-temperature, falling from September's pleasant 73°F (22.8°C) to a mild 60.6°F (15.9°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Swan, Indiana, with an average temperature varying between 46.9°F (8.3°C) and 34.3°F (1.3°C). Swan's November weather comes with a decrease in average high-temperatures, moving from a moderate 60.6°F (15.9°C) in October to a frosty 46.9°F (8.3°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Swan, Indiana, with temperature in the range of an average high of 36°F (2.2°C) and an average low of 26.2°F (-3.2°C). December's onset brings a slight change in high-temperatures, falling from a chilly 46.9°F (8.3°C) in November to a cold 36°F (2.2°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Swan, IN
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30.2°F).
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure
Swan, IN
- Average pressure in January:
30.11"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:
30.01"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.1"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Swan, IN
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.7mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.5mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity
Swan, IN
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is October (76%).
Average rainfall
Swan, IN
- Average rainfall in January:
0.75" - Average rainfall in February:
0.67" - Average rainfall in March:
1.14" - Average rainfall in April:
1.65" - Average rainfall in May:
1.69" - Average rainfall in June:
1.5"
- Average rainfall in July:
1.26" - Average rainfall in August:
1.18" - Average rainfall in September:
0.91" - Average rainfall in October:
0.79" - Average rainfall in November:
0.87" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is May (1.69").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days
Swan, IN
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
4.9 days - Average rainfall days in March:
10.2 days - Average rainfall days in April:
13.2 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
14.5 days
- Average rainfall days in July:
14.1 days - Average rainfall days in August:
12.1 days - Average rainfall days in September:
10.9 days - Average rainfall days in October:
10.4 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
7.4 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is February (4.9 days).
Average snowfall
Swan, IN
The month with the highest snowfall is February (1.69").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Swan, IN
- Average snowfall days in January:
8.8 days - Average snowfall days in February:
7.5 days - Average snowfall days in March:
4.4 days - Average snowfall days in April:
1.2 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:
0.4 days - Average snowfall days in November:
3 days - Average snowfall days in December:
7.1 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Swan, IN
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
3h and 18min - Average sunshine in February:
4h and 18min - Average sunshine in March:
5h and 54min - Average sunshine in April:
6h and 54min - Average sunshine in May:
8h and 36min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
9h and 36min - Average sunshine in September:
8h and 0min - Average sunshine in October:
6h and 12min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days
Swan, IN
- Average sunshine days in January:
19.2 days - Average sunshine days in February:
17.1 days - Average sunshine days in March:
17.9 days - Average sunshine days in April:
14.2 days - Average sunshine days in May:
12.6 days - Average sunshine days in June:
12.4 days
- Average sunshine days in July:
12 days - Average sunshine days in August:
14.9 days - Average sunshine days in September:
16.1 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
18.9 days - Average sunshine days in December:
18.8 days
The month with the most sunshine days is January (19.2 days).
The month with the least sunshine days is July (12 days).
Average UV index
Swan, IN
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Swan, IN
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility
Swan, IN
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).





