Climate and monthly weather forecastDerby, IN
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Derby, Indiana, with an average temperature varying between 39.7°F (4.3°C) and 26.6°F (-3°C). The coldest time of the year is January, with temperatures averaging a high of 39.7°F (4.3°C) and a low of 26.6°F (-3°C). Weather in January »Weather in February
The last month of the winter, February, is a frosty month in Derby, Indiana, with an average temperature varying between 44.4°F (6.9°C) and 30.2°F (-1°C). The transition into February reveals an average high-temperature of a frosty 44.4°F (6.9°C), mirroring a close resemblance to January. Weather in February »Weather in March
The first month of the spring, March, is a cool month in Derby, Indiana, with an average temperature ranging between max 55°F (12.8°C) and min 38.8°F (3.8°C). The onset of March marks an increase in the average high-temperature, moving from a chilly 44.4°F (6.9°C) in February to a fresh 55°F (12.8°C). Weather in March »Weather in April
April is a comfortable spring month in Derby, Indiana, with an average temperature ranging between max 66.2°F (19°C) and min 48°F (8.9°C). April's onset brings a temperature rise, moving from a cool 55°F (12.8°C) in March to a comfortable 66.2°F (19°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Derby, Indiana, with an average temperature ranging between min 57.4°F (14.1°C) and max 75.6°F (24.2°C). Derby's weather in May presents a rise in the average high-temperature, moving from an enjoyable 66.2°F (19°C) in April to a warm 75.6°F (24.2°C). Weather in May »Weather in June
The first month of the summer, June, is also a moderately hot month in Derby, Indiana, with temperature in the range of an average high of 83.8°F (28.8°C) and an average low of 64.8°F (18.2°C). Observing a slight rise in June, the average high-temperature shifts from May's warm 75.6°F (24.2°C) to a still moderately hot 83.8°F (28.8°C). Weather in June »Weather in July
July is a hot summer month in Derby, Indiana, with an average temperature ranging between min 67.6°F (19.8°C) and max 86.5°F (30.3°C). July, characterized by an average high temperature of 86.5°F (30.3°C) and a low temperature of 67.6°F (19.8°C), is generally the warmest month. July's heat index is appraised at a torrid 100.4°F (38°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Derby, Indiana, with an average temperature fluctuating between 65.7°F (18.7°C) and 85.6°F (29.8°C). August's arrival brings an average high-temperature of a warm 85.6°F (29.8°C), demonstrating subtle variation from the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Derby, is also a moderately hot month, with temperature in the range of an average low of 60.1°F (15.6°C) and an average high of 79.7°F (26.5°C). The transition into September subtly indicates a reduction in the average high-temperature, down to a still warm 79.7°F (26.5°C) from August's moderately hot 85.6°F (29.8°C). Weather in September »Weather in October
October, like September, in Derby, Indiana, is another enjoyable autumn month, with an average temperature ranging between max 67.1°F (19.5°C) and min 49.1°F (9.5°C). Observing a mild shift, the average high-temperature during October reduces from September's warm 79.7°F (26.5°C) to a comfortable 67.1°F (19.5°C). Weather in October »Weather in November
November, the last month of the autumn in Derby, is also a fresh month, with an average temperature ranging between min 38.5°F (3.6°C) and max 53.6°F (12°C). Derby's weather in November involves a decrease in the average high-temperature, moving down from October's refreshing 67.1°F (19.5°C) to a fresh 53.6°F (12°C). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Derby, Indiana, with temperature in the range of an average low of 32.9°F (0.5°C) and an average high of 44.6°F (7°C). Start of December brings a shift in the average high-temperature, falling from November's cool 53.6°F (12°C) to a chilly 44.6°F (7°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 stands out as Derby's coldest month, with an average high-temperature of 39.7°F (4.3°C) and a low-temperature of 26.6°F (-3°C).
In Derby, during the entire year, the rain falls for 133.4 days and collects up to 17.99" (457mm) of precipitation.
January through April, October through December are months with snowfall in Derby, Indiana.
January is the month with the most snowfall. Snow falls for 5.7 days and accumulates 1.3" (33mm) of snow.
In Derby, during the entire year, snow falls for 20.2 days and aggregates up to 4.02" (102mm) of snow.
The months with the least sunshine in Derby are January and February, with an average of 4.3h of sunshine.
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.
February and May, with an average relative humidity of 80%, are most humid months in Derby.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Derby, 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 in Derby, Indiana, is April, when the rain falls for 12.9 days and typically aggregates up to 2.13" (54mm) of precipitation.
May through September are months without snowfall in Derby, Indiana.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
With an average of 14h and 48min of daylight, June has the longest days of the year.
July is Derby's warmest month, registering average high temperatures of 86.5°F (30.3°C) and lows of 67.6°F (19.8°C).
With an average of 10.5h of sunshine, August has the most sunshine of the year.
September is the month with the least rainfall in Derby. Rain falls for 11 days and accumulates 0.75" (19mm) of precipitation.
The least humid month in Derby is October, with an average relative humidity of 73%.
With an average of 9h and 36min of daylight, December has the shortest days of the year.
Average temperature
Derby, IN
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (39.7°F).
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure
Derby, IN
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.15"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Derby, IN
- Average wind speed in January:
8.1mph - Average wind speed in February:
8.1mph - Average wind speed in March:
8mph - Average wind speed in April:
8.1mph - Average wind speed in May:
6.7mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5mph - Average wind speed in August:
5.1mph - Average wind speed in September:
5.6mph - Average wind speed in October:
7mph - Average wind speed in November:
7.3mph - Average wind speed in December:
7.6mph
The windiest months (with the highest average wind speed) are January, February and April (8.1mph).
The calmest month (with the lowest average wind speed) is July (5mph).
Average humidity
Derby, IN
The months with the highest relative humidity are February and May (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Derby, IN
- Average rainfall in January:
1.18" - Average rainfall in February:
1.89" - Average rainfall in March:
1.46" - Average rainfall in April:
2.13" - Average rainfall in May:
1.93" - Average rainfall in June:
1.65"
- Average rainfall in July:
1.57" - Average rainfall in August:
1.42" - Average rainfall in September:
0.75" - Average rainfall in October:
1.26" - Average rainfall in November:
1.42" - Average rainfall in December:
1.34"
The wettest month (with the highest rainfall) is April (2.13").
The driest month (with the least rainfall) is September (0.75").
Average rainfall days
Derby, IN
- Average rainfall days in January:
9 days - Average rainfall days in February:
8.8 days - Average rainfall days in March:
12.2 days - Average rainfall days in April:
12.9 days - Average rainfall days in May:
15.1 days - Average rainfall days in June:
12.6 days
- Average rainfall days in July:
13.3 days - Average rainfall days in August:
12.1 days - Average rainfall days in September:
11 days - Average rainfall days in October:
8.4 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
9.5 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is October (8.4 days).
Average snowfall
Derby, IN
The month with the highest snowfall is January (1.3").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Derby, IN
- Average snowfall days in January:
5.7 days - Average snowfall days in February:
6.1 days - Average snowfall days in March:
2.3 days - Average snowfall days in April:
0.6 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:
3.6 days
The month with the highest number of snowfall days is February (6.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Derby, IN
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 18min - Average sunshine in February:
4h and 18min - Average sunshine in March:
6h and 0min - Average sunshine in April:
8h and 36min - Average sunshine in May:
9h and 6min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 30min - Average sunshine in September:
8h and 42min - Average sunshine in October:
6h and 54min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).
Average sunshine days
Derby, IN
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
14.9 days - Average sunshine days in April:
14.6 days - Average sunshine days in May:
12.5 days - Average sunshine days in June:
13.3 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
16 days - Average sunshine days in September:
16.3 days - Average sunshine days in October:
20 days - Average sunshine days in November:
19.8 days - Average sunshine days in December:
17.5 days
The month with the most sunshine days is October (20 days).
The month with the least sunshine days is May (12.5 days).
Average UV index
Derby, IN
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover
Derby, IN
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
Derby, IN
The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are May and July (5mi).
