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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, the same as December, in Lewis, Iowa, is another subzero cold winter month, with an average temperature ranging between max 28.4°F (-2°C) and min 15.1°F (-9.4°C). Lewis's January weather, with an average high temperature of 28.4°F (-2°C) and an average low temperature of 15.1°F (-9.4°C), tends to be the coldest of the year. Weather in January »
Weather in February
February, the last month of the winter in Lewis, is a cold month, with an average temperature fluctuating between 18.1°F (-7.7°C) and 32°F (0°C). Lewis records a slight change with February's average high-temperatures adjusting to an icy 32°F (0°C) from January's 28.4°F (-2°C). Weather in February »
Weather in March
March, the first month of the spring in Lewis, is a chilly month, with an average temperature ranging between min 32.5°F (0.3°C) and max 47.8°F (8.8°C). Lewis's weather experiences a significant temperature rise with the arrival of March, soaring from a cold 32°F (0°C) in February to a frosty 47.8°F (8.8°C). Weather in March »
Weather in April
April is a mild spring month in Lewis, Iowa, with temperature in the range of an average high of 59.5°F (15.3°C) and an average low of 42.4°F (5.8°C). April's onset witnesses a shift in the average high-temperature, moving from a frosty 47.8°F (8.8°C) in March to a refreshing 59.5°F (15.3°C). Weather in April »
Weather in May
May, the last month of the spring in Lewis, is a pleasant month, with temperature in the range of an average low of 52.9°F (11.6°C) and an average high of 69.6°F (20.9°C). The rise of average high-temperatures is seen in May, with an increase from a moderate 59.5°F (15.3°C) in April to an agreeable 69.6°F (20.9°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Lewis, Iowa, with temperature in the range of an average high of 79.9°F (26.6°C) and an average low of 63.1°F (17.3°C). With the beginning of June, Lewis's average high-temperature sees an increase, transitioning from a pleasant 69.6°F (20.9°C) in May to a warm 79.9°F (26.6°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Lewis, Iowa, with an average temperature ranging between max 82.6°F (28.1°C) and min 65.1°F (18.4°C). With an average high-temperature of 82.6°F (28.1°C) and an average low-temperature of 65.1°F (18.4°C), July is the warmest month. For most parts of July, the heat index is computed to be a hot 89.6°F (32°C). Weather in July »
Weather in August
August, the last month of the summer in Lewis, is also a moderately hot month, with an average temperature varying between 81.1°F (27.3°C) and 62.2°F (16.8°C). The onset of August brings with it an average high-temperature of a still warm 81.1°F (27.3°C), showing a negligible variation from the month before. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Lewis, Iowa, with an average temperature varying between 55.9°F (13.3°C) and 75°F (23.9°C). Lewis's September weather shows a modest shift in high-temperatures, falling from August's 81.1°F (27.3°C) to a still warm 75°F (23.9°C). Weather in September »
Weather in October
October, the same as September, in Lewis, Iowa, is another refreshing autumn month, with an average temperature fluctuating between 60.4°F (15.8°C) and 43.7°F (6.5°C). October signals a considerable drop in Lewis's average high-temperature, reducing from a moderately hot 75°F (23.9°C) in September to a refreshing 60.4°F (15.8°C). Weather in October »
Weather in November
November, the last month of the autumn in Lewis, is another chilly month, with an average temperature fluctuating between 47.1°F (8.4°C) and 32.4°F (0.2°C). November's arrival coincides with a drop in the average high-temperature, decreasing from October's refreshing 60.4°F (15.8°C) to a chilly 47.1°F (8.4°C). Weather in November »
Weather in December
December, the first month of the winter in Lewis, is also a wintry month, with an average temperature ranging between max 33.4°F (0.8°C) and min 21°F (-6.1°C). December's onset corresponds with a shift in the average high-temperature, moving from a chilly 47.1°F (8.4°C) in November to a wintry 33.4°F (0.8°C). Weather in December »
Updated: Aug 23, 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 month is the coldest?
In Lewis, January is the coldest month, with temperatures averaging a high of 28.4°F (-2°C) and a low of 15.1°F (-9.4°C).
What is the most humid month?
January is the most humid month, with an average relative humidity of 82%.
What is the driest month?
January is the month with the least rainfall. Rain falls for 3.8 days and accumulates 0.59" (15mm) of precipitation.
How much does it rain?
In Lewis, during the entire year, the rain falls for 118.7 days and collects up to 20.79" (528mm) of precipitation.
When does it snow?
January through May, October through December are months with snowfall in Lewis.
How many days does it snow?
Throughout the year, there are 32.3 snowfall days, and 9.41" (239mm) of snow is accumulated.
What is the month with the least sunshine in Lewis?
January has the least sunshine of the year, with an average of 4.5h of sunshine.
When is the lowest UV index?
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index.
When does it snow the most?
February is the month with the most snowfall. Snow falls for 7.7 days and accumulates 2.36" (60mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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?
June is the month with the most rainfall. Rain falls for 16.4 days and accumulates 3.7" (94mm) of precipitation.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
June has the longest days of the year, with an average of 15h and 6min of daylight.
What are the months with the highest UV index?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What time of the year is the hottest?
July is the month that records the highest temperatures, with averages ranging from a high of 82.6°F (28.1°C) to a low of 65.1°F (18.4°C).
What month has the most sunshine?
July has the most sunshine of the year, with an average of 10.4h of sunshine.
What is the least humid month?
October is the least humid month, with an average relative humidity of 69%.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
Lewis, IA
The warmest month (with the highest average high temperature) is July (82.6°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
Lewis, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.92"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed
Lewis, IA
- Average wind speed in January:
10.5mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.6mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8.4mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7.3mph - Average wind speed in September:
8.4mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity
Lewis, IA
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (69%).
Average rainfall
Lewis, IA
- Average rainfall in January:
0.59" - Average rainfall in February:
0.67" - Average rainfall in March:
1.14" - Average rainfall in April:
1.73" - Average rainfall in May:
3.15" - Average rainfall in June:
3.7"
- Average rainfall in July:
2.05" - Average rainfall in August:
2.48" - Average rainfall in September:
2.13" - Average rainfall in October:
1.42" - Average rainfall in November:
0.79" - Average rainfall in December:
0.94"
The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days
Lewis, IA
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
3.1 days - Average rainfall days in March:
9.3 days - Average rainfall days in April:
13.6 days - Average rainfall days in May:
16.2 days - Average rainfall days in June:
16.4 days
- Average rainfall days in July:
14 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
10.7 days - Average rainfall days in October:
8.6 days - Average rainfall days in November:
5.8 days - Average rainfall days in December:
4.4 days
The month with the highest number of rainy days is June (16.4 days).
The month with the least rainy days is February (3.1 days).
Average snowfall
Lewis, IA
- Average snowfall in January:
2.09" - Average snowfall in February:
2.36" - Average snowfall in March:
1.54" - Average snowfall in April:
0.59" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is February (2.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Lewis, IA
- Average snowfall days in January:
8.7 days - Average snowfall days in February:
7.7 days - Average snowfall days in March:
4.9 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0.3 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:
2.5 days - Average snowfall days in December:
6.4 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Lewis, 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 2min
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:
4h and 3min - Average sunshine in February:
5h and 1min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 5min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days
Lewis, IA
- Average sunshine days in January:
18.9 days - Average sunshine days in February:
17.3 days - Average sunshine days in March:
16.9 days - Average sunshine days in April:
14.3 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
12.6 days - Average sunshine days in August:
14.9 days - Average sunshine days in September:
16.6 days - Average sunshine days in October:
20.7 days - Average sunshine days in November:
20.7 days - Average sunshine days in December:
21.2 days
The month with the most sunshine days is December (21.2 days).
The month with the least sunshine days is June (10.8 days).
Average UV index
Lewis, IA
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
Lewis, IA
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility
Lewis, IA
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).
Lewis, Iowa, USA
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