Climate and monthly weather forecastWest Branch, IA
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in West Branch, Iowa, with an average temperature fluctuating between 15.4°F (-9.2°C) and 27.3°F (-2.6°C). January is the coldest month, exhibiting average temperatures of 27.3°F (-2.6°C) at the peak and 15.4°F (-9.2°C) at the base. Weather in January »Weather in February
February, the last month of the winter in West Branch, is another freezing cold month, with an average temperature ranging between min 19°F (-7.2°C) and max 31.5°F (-0.3°C). The ushering in of February brings an average high-temperature of a still subzero cold 31.5°F (-0.3°C), closely mirroring the 27.3°F (-2.6°C) of January. Weather in February »Weather in March
March, the first month of the spring in West Branch, is a chilly month, with an average temperature ranging between max 46.2°F (7.9°C) and min 31.5°F (-0.3°C). A clear rise in the average high-temperature is observed during March, increasing from a freezing cold 31.5°F (-0.3°C) in February to a chilly 46.2°F (7.9°C). Weather in March »Weather in April
April in West Branch, Iowa, is a refreshing spring month, with an average temperature varying between 42.3°F (5.7°C) and 58.6°F (14.8°C). West Branch sees an increase in average high-temperatures during April, moving from a frosty 46.2°F (7.9°C) in March to a refreshing 58.6°F (14.8°C). Weather in April »Weather in May
May, the last month of the spring in West Branch, is a pleasant month, with temperature in the range of an average low of 52.7°F (11.5°C) and an average high of 69.6°F (20.9°C). May sees a rise in the average high-temperature, climbing from a refreshing 58.6°F (14.8°C) in April to a pleasant 69.6°F (20.9°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in West Branch, Iowa, with an average temperature varying between 78.8°F (26°C) and 62.1°F (16.7°C). An increase in the average high-temperature marks June, moving from May's pleasant 69.6°F (20.9°C) to a warm 78.8°F (26°C). Weather in June »Weather in July
July, like June, in West Branch, Iowa, is a moderately hot summer month, with an average temperature ranging between min 64.6°F (18.1°C) and max 81°F (27.2°C). West Branch reaches its highest average temperatures in July, measuring 81°F (27.2°C) at the peak and 64.6°F (18.1°C) at the lowest. For most parts of July, the heat index 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 another warm month in West Branch, Iowa, with temperature in the range of an average high of 80.4°F (26.9°C) and an average low of 62.2°F (16.8°C). West Branch experiences an average high-temperature of a still warm 80.4°F (26.9°C) with the onset of August, subtly varied from July's 81°F (27.2°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in West Branch, Iowa, with an average temperature fluctuating between 75.2°F (24°C) and 55.4°F (13°C). The transition into September is marked with an average high-temperature of a still moderately hot 75.2°F (24°C), showing an insignificant shift from August's 80.4°F (26.9°C). Weather in September »Weather in October
October, the same as September, in West Branch, Iowa, is another mild autumn month, with an average temperature fluctuating between 44.8°F (7.1°C) and 60.3°F (15.7°C). In West Branch, the onset of October is marked by a decreased average high-temperature, declining from September's moderately hot 75.2°F (24°C) to a moderate 60.3°F (15.7°C). Weather in October »Weather in November
November, the last month of the autumn in West Branch, is also a frosty month, with an average temperature ranging between min 32.5°F (0.3°C) and max 46.2°F (7.9°C). November is characterized by a reduction in the average high-temperature, from a refreshing 60.3°F (15.7°C) in October to a chilly 46.2°F (7.9°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in West Branch, Iowa, with an average temperature varying between 33.8°F (1°C) and 23°F (-5°C). Transition into December marks a drop in the average high-temperature, moving from a chilly 46.2°F (7.9°C) in November to an icy 33.8°F (1°C). Weather in December »Updated: Feb 12, 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
January is the month that records the lowest temperatures in West Branch, with averages ranging from a high of 27.3°F (-2.6°C) to a low of 15.4°F (-9.2°C).
January is the month with the least rainfall. Rain falls for 4.4 days and accumulates 1.3" (33mm) of precipitation.
In West Branch, during the entire year, the rain falls for 139.1 days and collects up to 29.57" (751mm) of precipitation.
January through April, October through December are months with snowfall in West Branch.
The month with the most snowfall in West Branch, Iowa, is January, when snow falls for 9.4 days and typically aggregates up to 5.24" (133mm) of snow.
In West Branch, Iowa, during the entire year, snow falls for 34.5 days and aggregates up to 16.85" (428mm) of snow.
The month with the least sunshine is January, with an average of 4.1h of sunshine.
January and December, with an average maximum UV index of 1, are months with the lowest UV index in West Branch.
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.
The month with the most rainfall is May, when the rain falls for 18.7 days and typically aggregates up to 4.61" (117mm) of precipitation.
In West Branch, 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 in West Branch.
June and July, with an average maximum UV index of 6, are months with the highest UV index in West Branch, Iowa.
The warmest month is July, with an average high-temperature of 81°F (27.2°C) and an average low-temperature of 64.6°F (18.1°C).
July is the most humid month, with an average relative humidity of 84%.
With an average of 10.1h of sunshine, July has the most sunshine of the year.
With an average relative humidity of 72%, October is the least humid month in West Branch.
The month with the shortest days in West Branch, Iowa, is December, with an average of 9h and 12min of daylight.
Average temperature
West Branch, IA
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (27.3°F).
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure
West Branch, IA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.9"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:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
West Branch, IA
- Average wind speed in January:
10.5mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.8mph - Average wind speed in September:
7.9mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.3mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity
West Branch, IA
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
West Branch, IA
- Average rainfall in January:
1.3" - Average rainfall in February:
1.34" - Average rainfall in March:
1.97" - Average rainfall in April:
3.11" - Average rainfall in May:
4.61" - Average rainfall in June:
4.21"
- Average rainfall in July:
2.99" - Average rainfall in August:
2.01" - Average rainfall in September:
2.44" - Average rainfall in October:
2.48" - Average rainfall in November:
1.69" - Average rainfall in December:
1.42"
The wettest month (with the highest rainfall) is May (4.61").
The driest month (with the least rainfall) is January (1.3").
Average rainfall days
West Branch, IA
- Average rainfall days in January:
4.4 days - Average rainfall days in February:
4.8 days - Average rainfall days in March:
10.6 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
18.7 days - Average rainfall days in June:
18.5 days
- Average rainfall days in July:
16.7 days - Average rainfall days in August:
13.1 days - Average rainfall days in September:
12.2 days - Average rainfall days in October:
10.9 days - Average rainfall days in November:
7.8 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (4.4 days).
Average snowfall
West Branch, IA
The month with the highest snowfall is January (5.24").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
West Branch, IA
- Average snowfall days in January:
9.4 days - Average snowfall days in February:
8.4 days - Average snowfall days in March:
4.7 days - Average snowfall days in April:
1.3 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:
2.8 days - Average snowfall days in December:
7.3 days
The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
West Branch, IA
- 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 36min - Average daylight in June:
15h and 12min
- 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 48min - Average daylight in December:
9h and 12min
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 12min).
- Average sunshine in January:
4h and 6min - Average sunshine in February:
4h and 18min - Average sunshine in March:
6h and 36min - Average sunshine in April:
7h and 48min - Average sunshine in May:
8h and 48min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
9h and 54min - Average sunshine in September:
9h and 24min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
West Branch, IA
- Average sunshine days in January:
18.2 days - Average sunshine days in February:
15.7 days - Average sunshine days in March:
15.7 days - Average sunshine days in April:
12.7 days - Average sunshine days in May:
9.7 days - Average sunshine days in June:
9.2 days
- Average sunshine days in July:
10.8 days - Average sunshine days in August:
14.4 days - Average sunshine days in September:
16.8 days - Average sunshine days in October:
18.6 days - Average sunshine days in November:
19 days - Average sunshine days in December:
18.6 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is June (9.2 days).
Average UV index
West Branch, 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 December (UV index 1).
Average cloud cover
West Branch, IA
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
West Branch, IA
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
