Climate and monthly weather forecastBrighton, IA
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Brighton, Iowa, with an average temperature ranging between min 16.5°F (-8.6°C) and max 28.8°F (-1.8°C). In Brighton, the lowest average temperatures are observed in January, with a high of 28.8°F (-1.8°C) and a low of 16.5°F (-8.6°C). Weather in January »Weather in February
The last month of the winter, February, is an icy month in Brighton, Iowa, with temperature in the range of an average low of 19.9°F (-6.7°C) and an average high of 33.3°F (0.7°C). The onset of February brings an average high-temperature of a cold 33.3°F (0.7°C), nearly matching the January temperature. Weather in February »Weather in March
March, the first month of the spring in Brighton, is a frosty month, with temperature in the range of an average high of 47.5°F (8.6°C) and an average low of 32.5°F (0.3°C). March comes with an increase, with the average high-temperature moving from a cold 33.3°F (0.7°C) in February to a chilly 47.5°F (8.6°C). Weather in March »Weather in April
April is a refreshing spring month in Brighton, Iowa, with an average temperature varying between 43°F (6.1°C) and 59.5°F (15.3°C). The start of April signals an increase in the average high-temperature, moving from a frosty 47.5°F (8.6°C) in March to a mild 59.5°F (15.3°C). Weather in April »Weather in May
May, the last month of the spring in Brighton, is a pleasant month, with temperature in the range of an average low of 53.8°F (12.1°C) and an average high of 70.2°F (21.2°C). Noticing a change, the average high-temperature during May moves from April's mild 59.5°F (15.3°C) to a pleasant 70.2°F (21.2°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Brighton, Iowa, with an average temperature ranging between max 79.5°F (26.4°C) and min 63.1°F (17.3°C). Brighton in June experiences an increase in the average high-temperature, moving from May's agreeable 70.2°F (21.2°C) to a moderately hot 79.5°F (26.4°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Brighton, Iowa, with an average temperature fluctuating between 65.1°F (18.4°C) and 82°F (27.8°C). The warmest temperatures occur during July, when averages reach a peak of 82°F (27.8°C) and a low of 65.1°F (18.4°C). The heat index value for July is calculated to be a hot 89.6°F (32°C). Weather in July »Weather in August
August, the last month of the summer in Brighton, is also a moderately hot month, with an average temperature ranging between max 81.1°F (27.3°C) and min 63°F (17.2°C). August is marked by an average high-temperature of a still warm 81.1°F (27.3°C), almost identical to the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Brighton, is still a warm month, with temperature in the range of an average low of 56.3°F (13.5°C) and an average high of 75.6°F (24.2°C). In Brighton, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's warm 81.1°F (27.3°C) to a still moderately hot 75.6°F (24.2°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Brighton, Iowa, with an average temperature ranging between min 45.3°F (7.4°C) and max 61.5°F (16.4°C). The beginning of October involves a decrease in the average high-temperature, transitioning from a warm 75.6°F (24.2°C) in September to a comfortable 61.5°F (16.4°C). Weather in October »Weather in November
November, the last month of the autumn in Brighton, is another chilly month, with an average temperature varying between 47.3°F (8.5°C) and 33.6°F (0.9°C). The transition into November indicates a reduction in the average high-temperature, down to a frosty 47.3°F (8.5°C) from October's comfortable 61.5°F (16.4°C). Weather in November »Weather in December
December, the first month of the winter in Brighton, is also an icy month, with an average temperature fluctuating between 34.9°F (1.6°C) and 24.1°F (-4.4°C). The arrival of December signals a shift in temperature, down from a frosty 47.3°F (8.5°C) in November to a wintry 34.9°F (1.6°C). Weather in December »Updated: Aug 31, 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
In Brighton, the lowest temperatures are generally noted in January, averaging a high of 28.8°F (-1.8°C) and a low of 16.5°F (-8.6°C).
The months with the highest humidity are January and July, with an average relative humidity of 83%.
Throughout the year, there are 123.7 rainfall days, and 18.94" (481mm) of precipitation is accumulated.
January through April, October through December are months with snowfall.
January is the month with the most snowfall in Brighton. Snow falls for 8.9 days and accumulates 2.52" (64mm) of snow.
In Brighton, during the entire year, snow falls for 29.8 days and aggregates up to 7.99" (203mm) of snow.
The month with the least sunshine in Brighton is January, with an average of 4.2h of sunshine.
The month with the lowest UV index is January, with an average maximum UV index of 1.
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 17 days and typically aggregates up to 2.91" (74mm) of precipitation.
In Brighton, snow does not fall in May through September.
With an average of 15h and 6min of daylight, June has the longest days of the year.
June and July, with an average maximum UV index of 6, are months with the highest UV index.
The highest temperatures are recorded in July, with averages reaching a high of 82°F (27.8°C) and a low of 65.1°F (18.4°C).
The month with the most sunshine is July, with an average of 10.2h of sunshine.
The least humid month in Brighton is October, with an average relative humidity of 72%.
The month with the least rainfall is December, when the rain falls for 5.8 days and typically collects 0.71" (18mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Brighton, IA
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (28.8°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 (16.5°F).
Average pressure
Brighton, IA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.07"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
Brighton, IA
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.5mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.9mph - 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:
10.4mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity
Brighton, IA
The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Brighton, IA
- Average rainfall in January:
0.79" - Average rainfall in February:
0.75" - Average rainfall in March:
1.22" - Average rainfall in April:
1.97" - Average rainfall in May:
2.91" - Average rainfall in June:
2.87"
- Average rainfall in July:
2.01" - Average rainfall in August:
1.34" - Average rainfall in September:
1.65" - Average rainfall in October:
1.54" - Average rainfall in November:
1.18" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days
Brighton, IA
- Average rainfall days in January:
4.4 days - Average rainfall days in February:
4.2 days - Average rainfall days in March:
10.9 days - Average rainfall days in April:
12.7 days - Average rainfall days in May:
17 days - Average rainfall days in June:
16.1 days
- Average rainfall days in July:
13.8 days - Average rainfall days in August:
11.8 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
10.2 days - Average rainfall days in November:
7.3 days - Average rainfall days in December:
5.8 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.2 days).
Average snowfall
Brighton, IA
The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Brighton, IA
- Average snowfall days in January:
8.9 days - Average snowfall days in February:
7.9 days - Average snowfall days in March:
4.5 days - Average snowfall days in April:
0.9 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:
0.4 days - Average snowfall days in November:
1.5 days - Average snowfall days in December:
5.7 days
The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Brighton, IA
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- 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 54min - Average daylight in December:
9h and 18min
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 12min - Average sunshine in February:
4h and 24min - Average sunshine in March:
6h and 36min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 54min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
10h and 6min - Average sunshine in September:
9h and 30min - Average sunshine in October:
5h and 36min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days
Brighton, IA
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
17 days - Average sunshine days in March:
16.6 days - Average sunshine days in April:
14 days - Average sunshine days in May:
10.9 days - Average sunshine days in June:
11 days
- Average sunshine days in July:
12.9 days - Average sunshine days in August:
15.5 days - Average sunshine days in September:
18.1 days - Average sunshine days in October:
19 days - Average sunshine days in November:
20.3 days - Average sunshine days in December:
20.5 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (10.9 days).
Average UV index
Brighton, IA
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Brighton, IA
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility
Brighton, 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).
