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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 Swan, Iowa, with an average temperature varying between 28.4°F (-2°C) and 15.1°F (-9.4°C). Swan witnesses the coldest weather in January, with temperatures averaging a high of 28.4°F (-2°C) and a low of 15.1°F (-9.4°C). Weather in January »
Weather in February
The last month of the winter, February, is a wintry month in Swan, Iowa, with an average temperature ranging between max 32.5°F (0.3°C) and min 18.7°F (-7.4°C). As Swan welcomes February, the average high-temperature records at a wintry 32.5°F (0.3°C), marking an insignificant deviation from the prior month. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Swan, Iowa, with an average temperature fluctuating between 47.7°F (8.7°C) and 32.5°F (0.3°C). As March sets, the average high-temperature displays a significant increase, moving up from a cold 32.5°F (0.3°C) in February to a frosty 47.7°F (8.7°C). Weather in March »
Weather in April
April in Swan, Iowa, is a refreshing spring month, with an average temperature ranging between min 42.4°F (5.8°C) and max 59.7°F (15.4°C). Entering April, Swan sees a temperature rise, with the average high-temperature advancing from March's frosty 47.7°F (8.7°C) to a mild 59.7°F (15.4°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Swan, Iowa, with an average temperature fluctuating between 52.9°F (11.6°C) and 69.8°F (21°C). Swan's weather in May presents a rise in the average high-temperature, moving from a mild 59.7°F (15.4°C) in April to a pleasant 69.8°F (21°C). Weather in May »
Weather in June
June, the first month of the summer in Swan, is a warm month, with an average temperature fluctuating between 79.3°F (26.3°C) and 63.1°F (17.3°C). The shift from May to June brings an increase in the average high-temperature, moving from a pleasant 69.8°F (21°C) to a moderately hot 79.3°F (26.3°C). Weather in June »
Weather in July
July, like June, in Swan, Iowa, is another warm summer month, with an average temperature ranging between max 82.9°F (28.3°C) and min 65.1°F (18.4°C). July is the warmest month, exhibiting average temperatures of 82.9°F (28.3°C) at the peak and 65.1°F (18.4°C) at the base. The heat index in July is appraised at a hot 91.4°F (33°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Swan, Iowa, with an average temperature fluctuating between 81.3°F (27.4°C) and 62.6°F (17°C). Swan notes an average high-temperature of a still moderately hot 81.3°F (27.4°C) in August, displaying minor variation from July. Weather in August »
Weather in September
September, the first month of the autumn in Swan, is still a warm month, with an average temperature fluctuating between 75.7°F (24.3°C) and 56.1°F (13.4°C). The arrival of September correlates with a minor temperature reduction, down from August's 81.3°F (27.4°C) to a still moderately hot 75.7°F (24.3°C). Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Swan, Iowa, with an average temperature ranging between min 45°F (7.2°C) and max 60.8°F (16°C). October signals a clear decrease in the average high-temperature, dropping from September's warm 75.7°F (24.3°C) to a comfortable 60.8°F (16°C). Weather in October »
Weather in November
November, the last month of the autumn in Swan, is another chilly month, with an average temperature ranging between max 47.1°F (8.4°C) and min 32.9°F (0.5°C). A shift in the average high-temperature occurs in November, reducing from a refreshing 60.8°F (16°C) in October to a frosty 47.1°F (8.4°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Swan, Iowa, with temperature in the range of an average low of 22.8°F (-5.1°C) and an average high of 34.3°F (1.3°C). With the beginning of December, the average high-temperature shows a decrease, transitioning from a frosty 47.1°F (8.4°C) in November to a cold 34.3°F (1.3°C). Weather in December »
[Resources]Frequently asked questions
What part of the year is the coldest in Swan?
Swan's coldest month, January, generally records average temperatures ranging from a high of 28.4°F (-2°C) to a low of 15.1°F (-9.4°C).
What is the most humid month in Swan?
With an average relative humidity of 83%, January is the most humid month.
What is the driest month in Swan?
The months with the least rainfall are January and December Rain falls for 3.8 days and accumulates 0.39" (10mm) of rain.
How much does it rain in Swan?
Throughout the year, in Swan, there are 109.9 rainfall days, and 12.72" (323mm) of precipitation is accumulated.
When does it snow in Swan?
Months with snowfall in Swan, Iowa, are January through April, October through December.
What is the snowiest month in Swan?
January is the month with the most snowfall. Snow falls for 8.8 days and accumulates 1.97" (50mm) of snow.
How many days does it snow in Swan?
Throughout the year, there are 28.4 snowfall days, and 5.71" (145mm) of snow is accumulated.
What is the month with the least sunshine in Swan?
January has the least sunshine of the year, with an average of 4.2h of sunshine.
What is the month with the lowest UV index in Swan?
With an average maximum UV index of 1, January is the month with the lowest UV index.
When is Daylight Saving Time (DST) in Swan?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Swan, Iowa, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the wettest month in Swan?
The month with the most rainfall in Swan, Iowa, is May, when the rain falls for 15.3 days and typically aggregates up to 2.28" (58mm) of precipitation.
When it does not snow in Swan?
May through September are months without snowfall.
When are the longest days in Swan?
With an average of 15h and 6min of daylight, June has the longest days of the year in Swan, Iowa.
When is the highest UV index in Swan?
The months with the highest UV index in Swan, Iowa, are June through August, with an average maximum UV index of 6.
What is the warmest month in Swan?
July, on average, is the warmest month in Swan, registering a high temperature of 82.9°F (28.3°C) and a low of 65.1°F (18.4°C).
What month has the most sunshine in Swan?
July has the most sunshine of the year in Swan, Iowa, with an average of 10.5h of sunshine.
What is the least humid month in Swan?
With an average relative humidity of 71%, October is the least humid month in Swan.
What is the month with the shortest days in Swan?
With an average of 9h and 12min of daylight, December has the shortest days of the year.
Average temperature
Swan, IA
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (28.4°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 (15.1°F).
Average pressure
Swan, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Swan, IA
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.9mph
- Average wind speed in July:
7mph - Average wind speed in August:
6.8mph - Average wind speed in September:
7.9mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.2mph - Average wind speed in December:
9.9mph
The windiest months (with the highest average wind speed) are January and April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity
Swan, IA
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Swan, IA
- Average rainfall in January:
0.39" - Average rainfall in February:
0.43" - Average rainfall in March:
0.83" - Average rainfall in April:
1.1" - Average rainfall in May:
2.28" - Average rainfall in June:
2.05"
- Average rainfall in July:
1.22" - Average rainfall in August:
1.26" - Average rainfall in September:
1.42" - Average rainfall in October:
0.75" - Average rainfall in November:
0.59" - Average rainfall in December:
0.39"
The wettest month (with the highest rainfall) is May (2.28").
The driest months (with the least rainfall) are January and December (0.39").
Average rainfall days
Swan, IA
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
3.3 days - Average rainfall days in March:
9.3 days - Average rainfall days in April:
11.9 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
14.6 days
- Average rainfall days in July:
12.3 days - Average rainfall days in August:
11.5 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
7.8 days - Average rainfall days in November:
6.1 days - Average rainfall days in December:
4.5 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (3.3 days).
Average snowfall
Swan, IA
The month with the highest snowfall is January (1.97").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Swan, IA
- Average snowfall days in January:
8.8 days - Average snowfall days in February:
7.2 days - Average snowfall days in March:
4.1 days - Average snowfall days in April:
0.8 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:
1.8 days - Average snowfall days in December:
5.1 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, IA
- 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 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
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 12min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days
Swan, IA
- Average sunshine days in January:
20.7 days - Average sunshine days in February:
19.2 days - Average sunshine days in March:
18.2 days - Average sunshine days in April:
15.9 days - Average sunshine days in May:
12.8 days - Average sunshine days in June:
10.9 days
- Average sunshine days in July:
15 days - Average sunshine days in August:
16.4 days - Average sunshine days in September:
17.9 days - Average sunshine days in October:
21.3 days - Average sunshine days in November:
21.7 days - Average sunshine days in December:
22.7 days
The month with the most sunshine days is December (22.7 days).
The month with the least sunshine days is June (10.9 days).
Average UV index
Swan, IA
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Swan, IA
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July, August and September (Cloud cover 29).
Average visibility
Swan, IA
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Swan, Iowa, USA
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