Climate and monthly weather forecastHerndon, KS
Climate and monthly weather forecast
Weather in January
January, like December, in Herndon, Kansas, is a wintry winter month, with an average temperature ranging between max 40.6°F (4.8°C) and min 24.3°F (-4.3°C). With the start of January, Herndon measures an average high-temperature of a still cold 40.6°F (4.8°C), not significantly differing from December's 40.1°F (4.5°C). Weather in January »Weather in February
February, the last month of the winter in Herndon, is a chilly month, with an average temperature ranging between max 43.2°F (6.2°C) and min 25.3°F (-3.7°C). As Herndon steps into February, the average high-temperature is measured at a chilly 43.2°F (6.2°C), displaying minor differences from January's 40.6°F (4.8°C). Weather in February »Weather in March
March, the first month of the spring in Herndon, is a moderate month, with an average temperature ranging between min 35.8°F (2.1°C) and max 56.5°F (13.6°C). As March sets, the average high-temperature shows an increase, moving up from a chilly 43.2°F (6.2°C) in February to a mild 56.5°F (13.6°C). Weather in March »Weather in April
April in Herndon, Kansas, is a refreshing spring month, with an average temperature ranging between max 64°F (17.8°C) and min 42.6°F (5.9°C). The shift into April brings a slight increase in the average high-temperature, moving from 56.5°F (13.6°C) in March to a still refreshing 64°F (17.8°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Herndon, Kansas, with an average temperature varying between 72.3°F (22.4°C) and 51.4°F (10.8°C). As Herndon welcomes May, the average high-temperature sees a modest rise, transitioning from an enjoyable 64°F (17.8°C) in April to a pleasant 72.3°F (22.4°C). Weather in May »Weather in June
June, the first month of the summer in Herndon, is a tropical month, with an average temperature fluctuating between 87.4°F (30.8°C) and 65.1°F (18.4°C). Herndon's June weather is characterized by a distinct upsurge in high-temperatures, soaring from May's agreeable 72.3°F (22.4°C) to a tropical 87.4°F (30.8°C). Weather in June »Weather in July
July, like June, is a hot summer month in Herndon, Kansas, with an average temperature varying between 91.9°F (33.3°C) and 69.4°F (20.8°C). July, on average, is the warmest month, registering a high temperature of 91.9°F (33.3°C) and a low of 69.4°F (20.8°C). The heat index for July is appraised at a fiery hot 100.4°F (38°C). Weather in July »Weather in August
The last month of the summer, August, is another hot month in Herndon, Kansas, with an average temperature varying between 66.2°F (19°C) and 89.1°F (31.7°C). Upon the beginning of August, Herndon's high-temperatures register at a still tropical 89.1°F (31.7°C), closely mirroring the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Herndon, is still a warm month, with an average temperature ranging between max 81°F (27.2°C) and min 59.7°F (15.4°C). As August makes way for September, Herndon's average high-temperature eases from a tropical 89.1°F (31.7°C) to a moderately hot 81°F (27.2°C). Weather in September »Weather in October
October, like September, in Herndon, Kansas, is another refreshing autumn month, with an average temperature fluctuating between 46°F (7.8°C) and 65.3°F (18.5°C). Herndon in October sees a clear temperature decline, with average high-temperatures decreasing from a warm 81°F (27.2°C) in September to an enjoyable 65.3°F (18.5°C). Weather in October »Weather in November
November, the last month of the autumn in Herndon, is another cool month, with an average temperature varying between 53.2°F (11.8°C) and 34.7°F (1.5°C). November's onset brings a slight change in high-temperatures, falling from a comfortable 65.3°F (18.5°C) in October to a fresh 53.2°F (11.8°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Herndon, Kansas, with an average temperature fluctuating between 40.1°F (4.5°C) and 24.8°F (-4°C). In Herndon, Kansas, December is the coldest month, with temperatures averaging a high of 40.1°F (4.5°C) and a low of 24.8°F (-4°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Herndon, KS
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (40.1°F).
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure
Herndon, KS
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30"Hg - Average pressure in April:
29.89"Hg - Average pressure in May:
29.89"Hg - Average pressure in June:
29.82"Hg
- Average pressure in July:
29.9"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed
Herndon, KS
- Average wind speed in January:
10.6mph - Average wind speed in February:
11mph - Average wind speed in March:
11.5mph - Average wind speed in April:
12.4mph - Average wind speed in May:
11mph - Average wind speed in June:
10.9mph
- Average wind speed in July:
9.9mph - Average wind speed in August:
9.8mph - Average wind speed in September:
10.7mph - Average wind speed in October:
11.1mph - Average wind speed in November:
10.6mph - Average wind speed in December:
10.4mph
The windiest month (with the highest average wind speed) is April (12.4mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).
Average humidity
Herndon, KS
The month with the highest relative humidity is January (67%).
The month with the lowest relative humidity is July (52%).
Average rainfall
Herndon, KS
- Average rainfall in January:
0.43" - Average rainfall in February:
0.55" - Average rainfall in March:
1.1" - Average rainfall in April:
1.42" - Average rainfall in May:
2.6" - Average rainfall in June:
2.2"
- Average rainfall in July:
1.81" - Average rainfall in August:
2.17" - Average rainfall in September:
1.06" - Average rainfall in October:
1.1" - Average rainfall in November:
0.51" - Average rainfall in December:
0.83"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days
Herndon, KS
- Average rainfall days in January:
4.3 days - Average rainfall days in February:
2.6 days - Average rainfall days in March:
8.3 days - Average rainfall days in April:
11.7 days - Average rainfall days in May:
14.7 days - Average rainfall days in June:
12.8 days
- Average rainfall days in July:
12.3 days - Average rainfall days in August:
14.1 days - Average rainfall days in September:
10.4 days - Average rainfall days in October:
7.1 days - Average rainfall days in November:
3.5 days - Average rainfall days in December:
3.5 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (2.6 days).
Average snowfall
Herndon, KS
- Average snowfall in January:
2.09" - Average snowfall in February:
2.17" - Average snowfall in March:
1.93" - Average snowfall in April:
0.08" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Herndon, KS
- Average snowfall days in January:
5 days - Average snowfall days in February:
6.5 days - Average snowfall days in March:
3.1 days - Average snowfall days in April:
0.8 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:
1.3 days - Average snowfall days in November:
2.2 days - Average snowfall days in December:
5.5 days
The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Herndon, KS
- Average daylight in January:
9h and 42min - 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 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
6h and 18min - Average sunshine in February:
7h and 42min - Average sunshine in March:
7h and 54min - Average sunshine in April:
8h and 54min - Average sunshine in May:
9h and 48min - Average sunshine in June:
11h and 18min
- Average sunshine in July:
11h and 24min - Average sunshine in August:
10h and 24min - Average sunshine in September:
9h and 0min - Average sunshine in October:
7h and 30min - Average sunshine in November:
6h and 42min - Average sunshine in December:
6h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 6h and 18min).
Average sunshine days
Herndon, KS
- Average sunshine days in January:
22.4 days - Average sunshine days in February:
18.9 days - Average sunshine days in March:
19.5 days - Average sunshine days in April:
15.1 days - Average sunshine days in May:
14 days - Average sunshine days in June:
13.1 days
- Average sunshine days in July:
14.2 days - Average sunshine days in August:
12.9 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
21.3 days - Average sunshine days in November:
23.9 days - Average sunshine days in December:
23.2 days
The month with the most sunshine days is November (23.9 days).
The month with the least sunshine days is August (12.9 days).
Average UV index
Herndon, KS
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Herndon, KS
The month with the most cloud cover is February (Cloud cover 35).
The months with the least cloud cover are June and July (Cloud cover 20).
Average visibility
Herndon, KS
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).





