Climate and monthly weather forecastSantiago, PA
Climate and monthly weather forecast
Weather in January
January, like December, in Santiago, Pennsylvania, is an icy winter month, with temperature in the range of an average low of 20.3°F (-6.5°C) and an average high of 32.9°F (0.5°C). January, noted for its average high-temperature of 32.9°F (0.5°C) and an average low-temperature of 20.3°F (-6.5°C), is considered the coldest month. Weather in January »Weather in February
The last month of the winter, February, is another cold month in Santiago, Pennsylvania, with temperature in the range of an average low of 22.6°F (-5.2°C) and an average high of 37°F (2.8°C). Santiago, Pennsylvania, marks the arrival of February with an average high-temperature of a still cold 37°F (2.8°C), hardly different from January's 32.9°F (0.5°C). Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Santiago, Pennsylvania, with an average temperature varying between 47.1°F (8.4°C) and 31.1°F (-0.5°C). In March, the average high-temperature increases from a cold 37°F (2.8°C) in February to a chilly 47.1°F (8.4°C). Weather in March »Weather in April
April is a mild spring month in Santiago, Pennsylvania, with an average temperature ranging between max 60.3°F (15.7°C) and min 41°F (5°C). In Santiago, stepping into April brings a temperature increase, moving up from March's chilly 47.1°F (8.4°C) to a refreshing 60.3°F (15.7°C). Weather in April »Weather in May
May, the last month of the spring in Santiago, is an agreeable month, with an average temperature ranging between min 50.9°F (10.5°C) and max 72°F (22.2°C). An upsurge in temperatures occurs as April gives way to May, with average highs shifting from a refreshing 60.3°F (15.7°C) to an agreeable 72°F (22.2°C). Weather in May »Weather in June
June, the first month of the summer in Santiago, is a warm month, with an average temperature varying between 79°F (26.1°C) and 58.1°F (14.5°C). June signifies a subtle uplift in the average high-temperature, adjusting from a pleasant 72°F (22.2°C) in May to a warm 79°F (26.1°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Santiago, Pennsylvania, with an average temperature ranging between min 61.9°F (16.6°C) and max 83.5°F (28.6°C). In Santiago, temperatures reach their average annual highs in July, measuring 83.5°F (28.6°C) and a minimum average of 61.9°F (16.6°C). For July, the heat index is calculated to be a hot 91.4°F (33°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Santiago, Pennsylvania, with an average temperature ranging between max 82°F (27.8°C) and min 60.4°F (15.8°C). Santiago marks the onset of August with an average high-temperature of a still warm 82°F (27.8°C), a subtle shift from July's 83.5°F (28.6°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Santiago, Pennsylvania, with an average temperature ranging between min 55.6°F (13.1°C) and max 75.4°F (24.1°C). A modest decline in the average high-temperature is seen during September, decreasing from a moderately hot 82°F (27.8°C) in August to a still warm 75.4°F (24.1°C). Weather in September »Weather in October
October, like September, in Santiago, Pennsylvania, is another comfortable autumn month, with an average temperature fluctuating between 45.3°F (7.4°C) and 61.7°F (16.5°C). In October, the meteorological conditions alter, with the average high-temperature shifting from a warm 75.4°F (24.1°C) in September to an enjoyable 61.7°F (16.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Santiago, Pennsylvania, with temperature in the range of an average low of 33.8°F (1°C) and an average high of 48.7°F (9.3°C). In Santiago, entering November brings a temperature decrement, reducing from October's refreshing 61.7°F (16.5°C) to a chilly 48.7°F (9.3°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Santiago, Pennsylvania, with temperature in the range of an average high of 39°F (3.9°C) and an average low of 28°F (-2.2°C). With December's onset, the weather shows a temperature decrease, transitioning from a chilly 48.7°F (9.3°C) in November to a cold 39°F (3.9°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Santiago, PA
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (32.9°F).
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure
Santiago, PA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.99"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Santiago, PA
- Average wind speed in January:
8.1mph - Average wind speed in February:
7.7mph - Average wind speed in March:
7.3mph - Average wind speed in April:
7.5mph - Average wind speed in May:
6mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.7mph - Average wind speed in September:
5.2mph - Average wind speed in October:
6.3mph - Average wind speed in November:
6.9mph - Average wind speed in December:
7.4mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity
Santiago, PA
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (75%).
Average rainfall
Santiago, PA
- Average rainfall in January:
1.22" - Average rainfall in February:
1.38" - Average rainfall in March:
1.5" - Average rainfall in April:
2.24" - Average rainfall in May:
2.24" - Average rainfall in June:
2.28"
- Average rainfall in July:
2.36" - Average rainfall in August:
1.73" - Average rainfall in September:
1.73" - Average rainfall in October:
1.61" - Average rainfall in November:
1.34" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is July (2.36").
The driest month (with the least rainfall) is January (1.22").
Average rainfall days
Santiago, PA
- Average rainfall days in January:
8.1 days - Average rainfall days in February:
8.2 days - Average rainfall days in March:
11.7 days - Average rainfall days in April:
15.1 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
16.2 days
- Average rainfall days in July:
16.9 days - Average rainfall days in August:
15.3 days - Average rainfall days in September:
13.1 days - Average rainfall days in October:
13.4 days - Average rainfall days in November:
9.2 days - Average rainfall days in December:
10.1 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.1 days).
Average snowfall
Santiago, PA
The month with the highest snowfall is February (2.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Santiago, PA
- Average snowfall days in January:
14.3 days - Average snowfall days in February:
11.8 days - Average snowfall days in March:
6.9 days - Average snowfall days in April:
1.8 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:
0.2 days - Average snowfall days in November:
4.1 days - Average snowfall days in December:
10.5 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Santiago, 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:
9h and 54min - Average daylight in December:
9h and 18min
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 18min).
- Average sunshine in January:
2h and 54min - Average sunshine in February:
3h and 36min - Average sunshine in March:
5h and 12min - Average sunshine in April:
7h and 24min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 18min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 12min - Average sunshine in October:
5h and 12min - Average sunshine in November:
4h and 48min - Average sunshine in December:
3h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days
Santiago, PA
- Average sunshine days in January:
11.8 days - Average sunshine days in February:
10.7 days - Average sunshine days in March:
13 days - Average sunshine days in April:
12 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
12.2 days
- Average sunshine days in July:
11.5 days - Average sunshine days in August:
13.6 days - Average sunshine days in September:
14.1 days - Average sunshine days in October:
15 days - Average sunshine days in November:
16.6 days - Average sunshine days in December:
12.9 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is February (10.7 days).
Average UV index
Santiago, PA
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Santiago, PA
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility
Santiago, PA
The months with the highest visibility are April, June, August and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September, October and December (5mi).





