Climate and monthly weather forecastCarlisle, PA
Climate and monthly weather forecast
The climate of Carlisle
Located in the US State Pennsylvania, Carlisle is subjected to a Humid subtropical climate, categorised as 'Cfa' under the Köppen climate classification. This signifies that temperatures are high enough to sustain a tropical ecosystem throughout the year, with no dedicated dry season.When analysing the general climate profile, it is evident that the temperature spectrum varies remarkably between the seasons. The average highest temperatures touch 83.8°F (28.8°C) during July and plummet to a chilly 35.1°F (1.7°C) in January. Correspondingly, the lowest temperatures range from 63.7°F (17.6°C) in July to a freezing 22.3°F (-5.4°C) in January.
Taking precipitation into account, the relative humidity oscillates between a maximum average of 80% in February to a minimum average of 75% in April and July. The city experiences a generous rain distribution over the year, but a noticeable increase in rainfall is seen during May which averages at 1.34" (34mm). A dry spell is never far away though, thanks to February and December when rainfall measures at 0.75" (19mm), on average.
Carlisle also witnesses a varying degree of sunlight hours and cloud cover percentage throughout the year. Notably, June boasts the maximum average daylight hours, calculated at 15 hours, while the sunshine hours top at 10.5 amid July.
The best time to visit Carlisle
The advisability of visiting Carlisle, Pennsylvania U.S.A, leans predominantly towards the period between May and September. This is when the temperature, although warm in the range of 70.5°F (21.4°C) to 81.3°F (27.4°C), is manageable and perfect for outdoor ventures. These months average moderate relative humidity figures between 76% and 76%, reducing participants' discomfort while participating in outdoor activities. Rainfall is modestly spaced across this period, limiting any disruptions caused by sudden showers.The worst time to visit Carlisle
Planning on visiting Carlisle during the months from the end of November to the beginning of March is not highly recommended. This period records the lowest temperatures, dropping to an average low of 22.3°F (-5.4°C) in January. The chill is further intensified by snowfall registered in the months from December to March, making outdoor activities challenging.Spring weather in Carlisle
The spring season in Carlisle, occurring from March to May, witnesses a swift rise in temperatures from 47.8°F (8.8°C) to 70.5°F (21.4°C). The nights are considerably cooler, with temperatures fluctuating between 31.6°F (-0.2°C) and 51.8°F (11°C). While April registers the highest rainfall amounts this season, it remains manageable at 1.14" (29mm). Daily sunshine gradually increases from 6.4 hours in March to 8.5 hours in May.Summer weather in Carlisle
The summer months of June through August in Carlisle are characterised by high temperatures averaging between 78.6°F (25.9°C) and 83.8°F (28.8°C). However, the evenings bring relief with the mercury dipping between 58.6°F (14.8°C) and 63.7°F (17.6°C). This period offers abundant sunlight hours and retains relatively lower humidity ranging between 34% and 31%.Autumn weather in Carlisle
Carlisle experiences a calming transition towards cooler temperatures during autumn from September through November. Average high temperatures recede from 74.3°F (23.5°C) to 50°F (10°C), while the lows drift from 55.4°F (13°C) to 35.1°F (1.7°C). Rainfall remains moderate through this period, averaging around 1.14" (29mm) in October.Winter weather in Carlisle
The winter season from December through February in Carlisle experiences the coldest temperatures. The average high temperature ranges from 35.1°F (1.7°C) to 41°F (5°C) while the low dips between 22.3°F (-5.4°C) and 29.5°F (-1.4°C). Additionally, December and January witness an average of 0.51" (13mm) and 1.38" (35mm) of snowfall, respectively. The percentage of cloud cover is around 49%, on average, during these months.Weather in January
The weather in Carlisle in January is characterized by rather cold conditions, with temperatures hitting a low of 22.3°F (-5.4°C) and not venturing much higher, reaching only up to 35.1°F (1.7°C). The chilly conditions persist from December without much relief. Weather in January »Weather in February
The February weather in Carlisle, Pennsylvania, is relatively consistent with the lingering winter chill of January, albeit with a slight increase in temperature, the range moves from 23.9°F (-4.5°C) to 38.5°F (3.6°C). The cold nights persist, and even though March is around the corner, the warmth of spring is still far away. Weather in February »Weather in March
Change starts to manifest itself in Carlisle's March weather, as the cold grip of winter begins to loosen slightly. The city sees an uptick in temperature, sighting figures between 31.6°F (-0.2°C) and 47.8°F (8.8°C), signaling the onset of spring. Weather in March »Weather in April
In Carlisle, April marks a noticeable difference in weather conditions from the previous month. With the advent of spring's warmer weather, temperatures rise above 60°F (15.6°C) during the daytime. However, the transition is not completely smooth, with cooler temperatures still felt at night time. Weather in April »Weather in May
May in Carlisle provides relief from the cooler months that have passed, as the weather becomes significantly warmer. The pleasant climate manifests with temperatures spanning from 51.8°F (11°C) to 70.5°F (21.4°C), indicating the nearing summer. Weather in May »Weather in June
June ushers in the summer season in Carlisle, bringing sun-filled days and warm temperatures. Ranging from 58.6°F (14.8°C) to 78.6°F (25.9°C), the weather gears up towards the peak of summer in July. The increased intensity of sunlight lifts the UV index. Weather in June »Weather in July
The weather in Carlisle peaks in heat during July, with temperatures soaring high between 63.7°F (17.6°C) and 83.8°F (28.8°C). This month distinguishes itself as the warmest period of the year. However, respite is in sight with a subtle drop expected in August. Weather in July »Weather in August
August in Carlisle brings a slight decrease in temperature from the previous month's peak, staying between 61.7°F (16.5°C) and 81.3°F (27.4°C). Still deeply entrenched in summer, there's a gentle nudge towards transition as September approaches with milder conditions. Weather in August »Weather in September
Carlisle’s September weather, ranging from 55.8°F (13.2°C) to 74.3°F (23.5°C), signifies a brief, pleasant interlude between summer and the approaching season of fall in October. The break from the intense heat of summer is welcomed by many. Weather in September »Weather in October
October in Carlisle witnesses a shift in weather conditions as fall starts to settle in earnest. The temperatures dip from the September range to lie between 45.9°F (7.7°C) and 62.8°F (17.1°C). As November draws closer, the approaching winter climate becomes more evident. Weather in October »Weather in November
November’s arrival in Carlisle underscores the gradual transition from fall to winter. As temperatures descend between 35.1°F (1.7°C) and 50°F (10°C), the chill in the air grows more pervasive. The imminent arrival of December signals the imminent arrival of colder, snowy weather. Weather in November »Weather in December
December weather in Carlisle ushers in the winter season, with temperatures plunging down from 29.5°F (-1.4°C) to 41°F (5°C). Following the pattern of November, the cooling trend continues, bringing along with it an increased incidence of snowfall. Weather in December »Updated: Aug 2, 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
Carlisle notes the coldest temperatures in January, with a average high of 35.1°F (1.7°C) and a low of 22.3°F (-5.4°C).
The months with the least rainfall are January and February Rain falls for 5.3 days and accumulates 0.75" (19mm) of rain.
In Carlisle, during the entire year, the rain falls for 123.7 days and collects up to 12.09" (307mm) of precipitation.
January through April, October through December are months with snowfall.
In Carlisle, during the entire year, snow falls for 22.3 days and aggregates up to 4.72" (120mm) of snow.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The most humid month is February, with an average relative humidity of 80%.
The month with the most snowfall is February, when snow falls for 6.3 days and typically aggregates up to 1.5" (38mm) of snow.
February has the least sunshine of the year, with an average of 4.5h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
The months with the lowest humidity are April and July, with an average relative humidity of 75%.
May is the month with the most rainfall. Rain falls for 14.7 days and accumulates 1.34" (34mm) of precipitation.
May through September are months without snowfall.
May through July, with an average maximum UV index of 6, are months with the highest UV index.
The month with the longest days is June, with an average of 15h and 0min of daylight.
July, marked by an average high-temperature of 83.8°F (28.8°C) and a low-temperature of 63.7°F (17.6°C), is the warmest month.
July has the most sunshine of the year, with an average of 10.5h of sunshine.
The month with the shortest days is December, with an average of 9h and 24min of daylight.
Average temperature
Carlisle, PA
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.1°F).
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure
Carlisle, PA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Carlisle, PA
- Average wind speed in January:
8mph - Average wind speed in February:
8mph - Average wind speed in March:
8.1mph - Average wind speed in April:
8mph - Average wind speed in May:
6.3mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.3mph - Average wind speed in October:
6.6mph - Average wind speed in November:
7mph - Average wind speed in December:
7.5mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity
Carlisle, PA
The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall
Carlisle, PA
- Average rainfall in January:
0.75" - Average rainfall in February:
0.75" - Average rainfall in March:
0.83" - Average rainfall in April:
1.14" - Average rainfall in May:
1.34" - Average rainfall in June:
1.1"
- Average rainfall in July:
1.26" - Average rainfall in August:
1.26" - Average rainfall in September:
0.79" - Average rainfall in October:
1.14" - Average rainfall in November:
0.87" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is May (1.34").
The driest months (with the least rainfall) are January and February (0.75").
Average rainfall days
Carlisle, PA
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
9.1 days - Average rainfall days in April:
12.5 days - Average rainfall days in May:
14.7 days - Average rainfall days in June:
12.9 days
- Average rainfall days in July:
13.3 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
10.4 days - Average rainfall days in October:
9.6 days - Average rainfall days in November:
7.2 days - Average rainfall days in December:
8.1 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (5.3 days).
Average snowfall
Carlisle, PA
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Carlisle, PA
- Average snowfall days in January:
7.7 days - Average snowfall days in February:
6.3 days - Average snowfall days in March:
3.6 days - Average snowfall days in April:
0.5 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:
0.1 days - Average snowfall days in November:
0.7 days - Average snowfall days in December:
3.3 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Carlisle, PA
- 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:
4h and 36min - Average sunshine in February:
4h and 30min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 18min - Average sunshine in May:
8h and 30min - Average sunshine in June:
10h and 0min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 54min - Average sunshine in October:
5h and 24min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days
Carlisle, PA
- Average sunshine days in January:
19.9 days - Average sunshine days in February:
16.8 days - Average sunshine days in March:
18.1 days - Average sunshine days in April:
15.3 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
14.4 days
- Average sunshine days in July:
14.9 days - Average sunshine days in August:
15.6 days - Average sunshine days in September:
17.7 days - Average sunshine days in October:
18.6 days - Average sunshine days in November:
21.5 days - Average sunshine days in December:
20.5 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is May (13.8 days).
Average UV index
Carlisle, PA
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Carlisle, PA
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility
Carlisle, PA
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
