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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 Dorchester, Iowa, is a freezing cold winter month, with an average temperature ranging between max 21.7°F (-5.7°C) and min 8.8°F (-12.9°C). January is the month when Dorchester, Iowa, experiences its coldest temperatures, averaging a high of 21.7°F (-5.7°C) and a low of 8.8°F (-12.9°C). Weather in January »
Weather in February
February, the last month of the winter in Dorchester, is also a subzero cold month, with an average temperature fluctuating between 25.7°F (-3.5°C) and 12.4°F (-10.9°C). Dorchester observes an average high-temperature of a still freezing cold 25.7°F (-3.5°C) in February, barely different from 21.7°F (-5.7°C) in January. Weather in February »
Weather in March
March, the first month of the spring in Dorchester, is a cold month, with an average temperature ranging between min 26.1°F (-3.3°C) and max 41°F (5°C). The onset of March marks a clear increase in the average high-temperature, escalating from a freezing cold 25.7°F (-3.5°C) in February to a cold 41°F (5°C). Weather in March »
Weather in April
April is a cool spring month in Dorchester, Iowa, with temperature in the range of an average high of 54°F (12.2°C) and an average low of 36.3°F (2.4°C). As Dorchester, Iowa, welcomes April, the average high-temperature sees a rise, transitioning from a cold 41°F (5°C) in March to a fresh 54°F (12.2°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Dorchester, Iowa, with an average temperature ranging between min 47.8°F (8.8°C) and max 65.8°F (18.8°C). The shift into May brings an increase in the average high-temperature, moving from a fresh 54°F (12.2°C) in April to an enjoyable 65.8°F (18.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Dorchester, Iowa, with an average temperature fluctuating between 74.8°F (23.8°C) and 57.6°F (14.2°C). The onset of June marks an increase in the average high-temperature, moving from a refreshing 65.8°F (18.8°C) in May to a warm 74.8°F (23.8°C). Weather in June »
Weather in July
July, like June, in Dorchester, Iowa, is a moderately hot summer month, with an average temperature ranging between max 79.3°F (26.3°C) and min 61.3°F (16.3°C). Dorchester's temperature records reveal July as the warmest month, marked by average highs of 79.3°F (26.3°C) and lows of 61.3°F (16.3°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Dorchester, Iowa, with an average temperature ranging between min 58.6°F (14.8°C) and max 77.9°F (25.5°C). The start of August sees the average high-temperature at a still moderately hot 77.9°F (25.5°C), showing little difference from July's 79.3°F (26.3°C). Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Dorchester, Iowa, with an average temperature varying between 71.1°F (21.7°C) and 51.3°F (10.7°C). In September, the meteorological conditions change slightly, with the average high-temperature moving from a moderately hot 77.9°F (25.5°C) in August to an agreeable 71.1°F (21.7°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Dorchester, Iowa, with an average temperature varying between 56.3°F (13.5°C) and 40.3°F (4.6°C). The arrival of October brings a distinct temperature shift, with the average high-temperature dropping from an agreeable 71.1°F (21.7°C) in September to a mild 56.3°F (13.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is also an icy month in Dorchester, Iowa, with an average temperature varying between 28.9°F (-1.7°C) and 41.9°F (5.5°C). As Dorchester steps into November, a marked temperature drop is observed, with the average high-temperature reducing from October's moderate 56.3°F (13.5°C) to a cold 41.9°F (5.5°C). Weather in November »
Weather in December
December, the first month of the winter in Dorchester, is still a freezing cold month, with temperature in the range of an average high of 27.9°F (-2.3°C) and an average low of 17.1°F (-8.3°C). The beginning of December marks a decrease in the average high-temperature, transitioning from a wintry 41.9°F (5.5°C) in November to a freezing cold 27.9°F (-2.3°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Dorchester?
Dorchester, Iowa, notes the coldest temperatures in January, with a average high of 21.7°F (-5.7°C) and a low of 8.8°F (-12.9°C).
What is the most humid month in Dorchester?
January is the most humid month, with an average relative humidity of 90%.
What is the driest month in Dorchester?
The month with the least rainfall in Dorchester is January, when the rain falls for 3.3 days and typically collects 0.87" (22mm) of precipitation.
How much does it rain in Dorchester?
Throughout the year, there are 130.5 rainfall days, and 26.5" (673mm) of precipitation is accumulated.
When does it snow in Dorchester?
Months with snowfall in Dorchester, Iowa, are January through May, October through December.
How many days does it snow in Dorchester?
Throughout the year, in Dorchester, Iowa, there are 51.4 snowfall days, and 22.2" (564mm) of snow is accumulated.
What is the month with the least sunshine in Dorchester?
The month with the least sunshine in Dorchester is January, with an average of 3.4h of sunshine.
What is the month with the lowest UV index in Dorchester?
The months with the lowest UV index in Dorchester, Iowa, are January, February, November and December, with an average maximum UV index of 1.
What is the snowiest month in Dorchester?
The month with the most snowfall is February, when snow falls for 11.4 days and typically aggregates up to 5.71" (145mm) of snow.
When is Daylight Saving Time (DST) in Dorchester?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Dorchester, 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 Dorchester?
June is the month with the most rainfall. Rain falls for 18 days and accumulates 4.61" (117mm) of precipitation.
When it does not snow in Dorchester?
In Dorchester, Iowa, snow does not fall in June through September.
When are the longest days in Dorchester?
With an average of 15h and 24min of daylight, June has the longest days of the year.
What time of the year is the hottest in Dorchester?
July is the month when Dorchester, Iowa, experiences its warmest temperatures, averaging a high of 79.3°F (26.3°C) and a low of 61.3°F (16.3°C).
What is the month with the highest UV index in Dorchester?
With an average maximum UV index of 6, July is the month with the highest UV index in Dorchester.
What month has the most sunshine in Dorchester?
The month with the most sunshine in Dorchester is August, with an average of 9.8h of sunshine.
What is the least humid month in Dorchester?
October is the least humid month, with an average relative humidity of 76%.
What is the month with the shortest days in Dorchester?
The month with the shortest days in Dorchester is December, with an average of 9h and 0min of daylight.
Average temperature
Dorchester, IA
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (21.7°F).
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (8.8°F).
Average pressure
Dorchester, IA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Dorchester, IA
- Average wind speed in January:
9.3mph - Average wind speed in February:
9.2mph - Average wind speed in March:
9.1mph - Average wind speed in April:
9.6mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.2mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.4mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.3mph - Average wind speed in December:
8.9mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity
Dorchester, IA
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (76%).
Average rainfall
Dorchester, IA
- Average rainfall in January:
0.87" - Average rainfall in February:
1.02" - Average rainfall in March:
1.46" - Average rainfall in April:
2.8" - Average rainfall in May:
3.54" - Average rainfall in June:
4.61"
- Average rainfall in July:
2.95" - Average rainfall in August:
2.36" - Average rainfall in September:
2.2" - Average rainfall in October:
2.01" - Average rainfall in November:
1.22" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is June (4.61").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days
Dorchester, IA
- Average rainfall days in January:
3.3 days - Average rainfall days in February:
3 days - Average rainfall days in March:
9.3 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
18 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
12.9 days - Average rainfall days in September:
12.1 days - Average rainfall days in October:
10.7 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
4.7 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (3 days).
Average snowfall
Dorchester, IA
- Average snowfall in January:
4.49" - Average snowfall in February:
5.71" - Average snowfall in March:
2.72" - Average snowfall in April:
2.48" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Dorchester, IA
- Average snowfall days in January:
12 days - Average snowfall days in February:
11.4 days - Average snowfall days in March:
7.4 days - Average snowfall days in April:
3.3 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:
1.1 days - Average snowfall days in November:
4.8 days - Average snowfall days in December:
11.1 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Dorchester, IA
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
3h and 2min - Average sunshine in February:
3h and 3min - Average sunshine in March:
5h and 4min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 1min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 1min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days
Dorchester, IA
- Average sunshine days in January:
17.7 days - Average sunshine days in February:
15.2 days - Average sunshine days in March:
15.6 days - Average sunshine days in April:
11.4 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
9.8 days
- Average sunshine days in July:
10.3 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
16.5 days
The month with the most sunshine days is January (17.7 days).
The month with the least sunshine days is June (9.8 days).
Average UV index
Dorchester, IA
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover
Dorchester, IA
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Dorchester, IA
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, March, July, August, September and December (5mi).
Dorchester, Iowa, USA
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