Climate and monthly weather forecastArthur, IA
Climate and monthly weather forecast
Weather in January
January, the same as December, in Arthur, Iowa, is a freezing cold winter month, with an average temperature varying between 13.3°F (-10.4°C) and 25.5°F (-3.6°C). The month of January sees the lowest average temperatures, reaching 25.5°F (-3.6°C) at the peak and 13.3°F (-10.4°C) at the low. Weather in January »Weather in February
February, the last month of the winter in Arthur, is another freezing cold month, with an average temperature fluctuating between 29.5°F (-1.4°C) and 16.7°F (-8.5°C). With the advent of February, Arthur's high-temperatures adjust to a still freezing cold 29.5°F (-1.4°C), closely aligning with the preceding month. Weather in February »Weather in March
March, the first month of the spring in Arthur, is a chilly month, with temperature in the range of an average high of 45.3°F (7.4°C) and an average low of 30.6°F (-0.8°C). Arthur's transition into March is marked by a clear rise in the average high-temperature, advancing from a subzero cold 29.5°F (-1.4°C) in February to a frosty 45.3°F (7.4°C). Weather in March »Weather in April
April in Arthur, Iowa, is a mild spring month, with an average temperature ranging between max 57.9°F (14.4°C) and min 41.5°F (5.3°C). April witnesses an increase in the average high-temperature, moving from a frosty 45.3°F (7.4°C) in March to a mild 57.9°F (14.4°C). Weather in April »Weather in May
May, the last month of the spring in Arthur, is an agreeable month, with an average temperature fluctuating between 69.4°F (20.8°C) and 52.3°F (11.3°C). In Arthur, the average high-temperature in May increases from a mild 57.9°F (14.4°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 Arthur, Iowa, with an average temperature varying between 78.6°F (25.9°C) and 62.8°F (17.1°C). As June sets, the average high-temperature shows an increase, moving up from an agreeable 69.4°F (20.8°C) in May to a moderately hot 78.6°F (25.9°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Arthur, Iowa, with an average temperature fluctuating between 81.9°F (27.7°C) and 64.8°F (18.2°C). July, with its average high-temperature of 81.9°F (27.7°C) and an average low-temperature of 64.8°F (18.2°C), holds the record as the warmest month. The heat index value for July is calculated to be a tropical 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Arthur, Iowa, with an average temperature fluctuating between 61.3°F (16.3°C) and 79.5°F (26.4°C). The onset of August brings an average high-temperature of a still warm 79.5°F (26.4°C), nearly matching the July temperature. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Arthur, Iowa, with an average temperature varying between 55.8°F (13.2°C) and 74.1°F (23.4°C). A subtle shift in Arthur's weather is observed as August turns into September, with the average high temperature reducing from 79.5°F (26.4°C) to a still warm 74.1°F (23.4°C). Weather in September »Weather in October
October, like September, is another mild autumn month in Arthur, Iowa, with an average temperature fluctuating between 58.6°F (14.8°C) and 43.5°F (6.4°C). October's arrival sees a clear drop in the average high-temperature, decreasing from September's warm 74.1°F (23.4°C) to a moderate 58.6°F (14.8°C). Weather in October »Weather in November
November, the last month of the autumn in Arthur, is also a frosty month, with an average temperature varying between 45.1°F (7.3°C) and 31.8°F (-0.1°C). November's arrival corresponds with a decrease in average high-temperatures, from October's mild 58.6°F (14.8°C) to a frosty 45.1°F (7.3°C). Weather in November »Weather in December
December, the first month of the winter in Arthur, is still a freezing cold month, with an average temperature ranging between max 30.2°F (-1°C) and min 19.9°F (-6.7°C). A distinct shift in the average high-temperature is signaled in December, moving down from a frosty 45.1°F (7.3°C) in November to a subzero cold 30.2°F (-1°C). Weather in December »Updated: Aug 25, 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
The coldest temperatures occur during January, when averages reach a peak of 25.5°F (-3.6°C) and a low of 13.3°F (-10.4°C).
With an average relative humidity of 84%, January is the most humid month in Arthur.
The month with the least rainfall is January, when the rain falls for 2.3 days and typically collects 0.24" (6mm) of precipitation.
In Arthur, during the entire year, the rain falls for 97 days and collects up to 10.12" (257mm) of precipitation.
January through April, October through December are months with snowfall.
Throughout the year, there are 30.1 snowfall days, and 4.49" (114mm) of snow is accumulated.
The month with the least sunshine is January, with an average of 4.2h of sunshine.
The months with the lowest UV index are January and February, with an average maximum UV index of 1.
The month with the most snowfall is February, when snow falls for 6.7 days and typically aggregates up to 1.26" (32mm) of snow.
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.
April and October, with an average relative humidity of 67%, are the least humid months.
The month with the most rainfall is May, when the rain falls for 13.8 days and typically aggregates up to 1.57" (40mm) of precipitation.
In Arthur, snow does not fall in May through September.
With an average of 15h and 12min of daylight, June has the longest days of the year.
The months with the highest UV index are June and July, with an average maximum UV index of 6.
Arthur records the warmest temperatures in July, averaging a high of 81.9°F (27.7°C) and a low of 64.8°F (18.2°C).
The month with the most sunshine is July, with an average of 10.5h of sunshine.
With an average of 9h and 6min of daylight, December has the shortest days of the year.
Average temperature
Arthur, IA
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (25.5°F).
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure
Arthur, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.15"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.93"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"Hg - Average pressure in November:
30.08"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
Arthur, IA
- Average wind speed in January:
11mph - Average wind speed in February:
10.9mph - Average wind speed in March:
10.9mph - Average wind speed in April:
11.2mph - Average wind speed in May:
9.6mph - Average wind speed in June:
8.8mph
- Average wind speed in July:
7.5mph - Average wind speed in August:
7.7mph - Average wind speed in September:
8.8mph - Average wind speed in October:
10.1mph - Average wind speed in November:
10.6mph - Average wind speed in December:
10.6mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity
Arthur, IA
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are April and October (67%).
Average rainfall
Arthur, IA
- Average rainfall in January:
0.24" - Average rainfall in February:
0.31" - Average rainfall in March:
0.59" - Average rainfall in April:
0.98" - Average rainfall in May:
1.57" - Average rainfall in June:
1.54"
- Average rainfall in July:
0.94" - Average rainfall in August:
1.1" - Average rainfall in September:
1.02" - Average rainfall in October:
0.94" - Average rainfall in November:
0.35" - Average rainfall in December:
0.51"
The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days
Arthur, IA
- Average rainfall days in January:
2.3 days - Average rainfall days in February:
2.3 days - Average rainfall days in March:
8 days - Average rainfall days in April:
11.1 days - Average rainfall days in May:
13.8 days - Average rainfall days in June:
12.8 days
- Average rainfall days in July:
10.2 days - Average rainfall days in August:
12.5 days - Average rainfall days in September:
8.8 days - Average rainfall days in October:
7.6 days - Average rainfall days in November:
4.5 days - Average rainfall days in December:
3.1 days
The month with the highest number of rainy days is May (13.8 days).
The months with the least rainy days are January and February (2.3 days).
Average snowfall
Arthur, IA
The month with the highest snowfall is February (1.26").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Arthur, IA
- Average snowfall days in January:
7.7 days - Average snowfall days in February:
6.7 days - Average snowfall days in March:
4.1 days - Average snowfall days in April:
1.1 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:
1.1 days - Average snowfall days in November:
2.2 days - Average snowfall days in December:
7.2 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Arthur, IA
- Average daylight in January:
9h and 30min - 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 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 6min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
4h and 12min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
9h and 30min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 48min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 42min
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
Arthur, IA
- Average sunshine days in January:
22.4 days - Average sunshine days in February:
20.8 days - Average sunshine days in March:
19.5 days - Average sunshine days in April:
16.4 days - Average sunshine days in May:
14.2 days - Average sunshine days in June:
14.5 days
- Average sunshine days in July:
16.9 days - Average sunshine days in August:
16 days - Average sunshine days in September:
19 days - Average sunshine days in October:
21.4 days - Average sunshine days in November:
23 days - Average sunshine days in December:
22.9 days
The month with the most sunshine days is November (23 days).
The month with the least sunshine days is May (14.2 days).
Average UV index
Arthur, IA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover
Arthur, IA
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility
Arthur, 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).
