Climate - Piacenza (Emilia Romagna)

In Piacenza, there is a semi-continental climate. Winters are quite cold and damp, while summers are hot and muggy.
The city is located in northern Italy, at 45 degrees north latitude. Just north of the city flows the river Po. About 15 km (9 mi) to the south begin the first hills of the Ligurian Apennines. We are in the western part of the Emilia-Romagna region, where the climate takes on the characteristics of the Po valley, while the eastern part is influenced by the Adriatic Sea.



Winter, from December to February, is cold, humid and dull. Temperatures can remain around 0 °C (32 °F) even during the day, especially in December and January, and the sky remains overcast for many days.
Fog, which in the past was fairly frequent, has become rarer in recent decades, to the point that now, it only occurs in periods when the Atlantic high pressure system dominates.
Snow in Piacenza generally falls at least once every year. In fact, Piacenza is the snowiest provincial capital in Emilia-Romagna, being the furthest from the sea. On average, almost 45 cm (18 in) of snow fall per year. In January 1911 and January 1985, snow reached one meter (40 inches) of depth.
During cold spells, which are becoming rarer due to global warming, the temperature can drop to -10 °C (14 °F) or below. In January 1985 it dropped to -22 °C (-7.5 °F).

Summer, from June to August, is hot and muggy, and generally sunny.
The air feels hotter because of humidity and poor ventilation, conditions typical of the Po Valley.
During heat waves, which are becoming more frequent, the temperature can reach 36/37 °C (97/99 °F) or above. In August 2003, it reached 40.4 °C (104.5 °F).
Sometimes there may be some rainy days even in summer, or thunderstorms may break out in the afternoon or in the evening.

Best Time

The best times to visit Piacenza are spring and early summer, particularly from mid-April to mid-June. September is also a good month. However, some rainy days must be taken into account in both periods.
Summer can be very hot, although it can give some acceptable days, especially in June. You have to take into account, in summer and sometimes in May, some afternoon or evening thunderstorms.

Piacenza - Climate data

In Piacenza, the average temperature of the coldest month (January) is of 2.8 °C (37.0 °F), that of the warmest month (August) is of 23.9 °C (75.0 °F). Here are the average temperatures.
In Piacenza, precipitation amounts to 725 millimeters (28.5 inches) per year: so, it is at an intermediate level. It ranges from 25 mm (1 in) in the driest month (July) to 115 mm (4.5 in) in the wettest one (November). Here is the average precipitation.
In Piacenza, there are on average around 2135 sunshine hours per year. Here are the average hours of sunshine per day.

Piacenza - Weather by month

Based on the period 1991-2020

---

In January, the coldest month of the year, the weather in Piacenza is usually cold. The average temperature is of 2.8 °C (37 °F), with a minimum of -0.7 °C (30.7 °F) and a maximum of 6.3 °C (43.3 °F).
On the coldest nights of the month, the temperature usually drops to around -6 °C (21 °F). However, it dropped to -10.7 °C (12.7 °F) in January 1997.
On the warmest days of the month, the temperature usually reaches around 14 °C (57 °F). However, it reached 24 °C (75.2 °F) in January 2007.
Precipitation amounts to 45 mm (1.8 in), distributed over 6 days.
The day lasts on average 9 hours and 10 minutes.
There are on average 2.5 hours of sunshine per day. So, the sun shines 29% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).

---

In February, the weather in Piacenza is usually quite cold. The average temperature is of 4.2 °C (39 °F), with a minimum of -0.5 °C (31.1 °F) and a maximum of 8.8 °C (47.8 °F).
On the coldest nights of the month, the temperature usually drops to around -6.5 °C (20.5 °F). However, it dropped to -15 °C (5 °F) in February 1991.
On the warmest days of the month, the temperature usually reaches around 16.5 °C (61.5 °F). However, it reached 22 °C (71.6 °F) in February 1998.
Precipitation amounts to 65 mm (2.6 in), distributed over 8 days.
The day lasts on average 10 hours and 25 minutes.
There are on average 4 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 6 kph (4 mph).

---

In March, the weather in Piacenza is usually quite mild. The average temperature is of 8.5 °C (47 °F), with a minimum of 2.8 °C (37 °F) and a maximum of 14.2 °C (57.6 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -3 °C (26.5 °F). However, it dropped to -13 °C (8.6 °F) in March 2005.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 22 °C (72 °F). However, it reached 28 °C (82.4 °F) in March 2002.
Precipitation amounts to 60 mm (2.4 in), distributed over 7 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 43% of the time.
The average humidity is 69%.
The average wind speed is 8 kph (5 mph).

---

In April, the weather in Piacenza is usually mild. The average temperature is of 12.4 °C (54 °F), with a minimum of 6.7 °C (44.1 °F) and a maximum of 18.1 °C (64.6 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 0.5 °C (33 °F). However, it dropped to -3.4 °C (25.9 °F) in April 2003.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 25 °C (77 °F). However, it reached 29.4 °C (84.9 °F) in April 2011.
Precipitation amounts to 70 mm (2.8 in), distributed over 8 days.
The day lasts on average 13 hours and 35 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 70%.
The average wind speed is 9 kph (6 mph).

---

In May, the weather in Piacenza is usually very mild. The average temperature is of 17.3 °C (63 °F), with a minimum of 11.4 °C (52.5 °F) and a maximum of 23.2 °C (73.8 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 6.5 °C (43.5 °F). However, it dropped to 3 °C (37.4 °F) in May 1991.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 29.5 °C (85 °F). However, it reached 34.2 °C (93.6 °F) in May 2001.
Precipitation amounts to 70 mm (2.8 in), distributed over 7 days.
The day lasts on average 14 hours and 55 minutes. So the days are long.
There are on average 7.5 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 68%.
The average wind speed is 8 kph (5 mph).

---

In June, the weather in Piacenza is usually warm. The average temperature is of 21.6 °C (71 °F), with a minimum of 15.5 °C (59.9 °F) and a maximum of 27.6 °C (81.7 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 10.5 °C (50.5 °F). However, it dropped to 6.4 °C (43.5 °F) in June 2006.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 33.5 °C (92 °F). However, it reached 38.2 °C (100.8 °F) in June 2019.
Precipitation amounts to 60 mm (2.4 in), distributed over 6 days.
The day lasts on average 15 hours and 35 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 9 hours of sunshine per day. So, the sun shines 56% of the time.
The average humidity is 66%.
The average wind speed is 8 kph (5 mph).

---

In July, the weather in Piacenza is usually warm to hot. The average temperature is of 23.8 °C (75 °F), with a minimum of 17.6 °C (63.7 °F) and a maximum of 30.1 °C (86.2 °F).
On the coldest nights of the month, the temperature usually drops to around 13 °C (55 °F). However, it dropped to 8.8 °C (47.8 °F) in July 2007.
On the warmest days of the month, the temperature usually reaches around 34.5 °C (94 °F). However, it reached 36.8 °C (98.2 °F) in July 2009.
Precipitation amounts to 25 mm (1 in), distributed over 3 days.
The day lasts on average 15 hours and 10 minutes. So the days are long.
There are on average 9.5 hours of sunshine per day. So, the sun shines 64% of the time.
The average humidity is 63%.
The average wind speed is 8 kph (5 mph).

---

In August, the warmest month of the year, the weather in Piacenza is usually warm to hot. The average temperature is of 23.9 °C (75 °F), with a minimum of 17.8 °C (64 °F) and a maximum of 30 °C (86 °F).
On the coldest nights of the month, the temperature usually drops to around 12 °C (54 °F). However, it dropped to 8 °C (46.4 °F) in August 1995.
On the warmest days of the month, the temperature usually reaches around 34.5 °C (94 °F). However, it reached 40.4 °C (104.7 °F) in August 2003.
Precipitation amounts to 45 mm (1.8 in), distributed over 4 days.
The day lasts on average 14 hours and 0 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 64% of the time.
The average humidity is 65%.
The average wind speed is 8 kph (5 mph).

---

In September, the weather in Piacenza is usually warm. The average temperature is of 19.2 °C (66 °F), with a minimum of 13.6 °C (56.5 °F) and a maximum of 24.7 °C (76.5 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 8 °C (47 °F). However, it dropped to 2.3 °C (36.1 °F) in September 1995.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 30.5 °C (86.5 °F). However, it reached 34 °C (93.2 °F) in September 2008.
Precipitation amounts to 60 mm (2.4 in), distributed over 4 days.
The day lasts on average 12 hours and 30 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is 8 kph (5 mph).

---

In October, the weather in Piacenza is usually mild. The average temperature is of 13.8 °C (57 °F), with a minimum of 9.9 °C (49.8 °F) and a maximum of 17.8 °C (64 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 3.5 °C (38.5 °F). However, it dropped to -5 °C (23 °F) in October 1997.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 24.5 °C (76.5 °F). However, it reached 30 °C (86 °F) in October 1997.
Precipitation amounts to 65 mm (2.6 in), distributed over 6 days.
The day lasts on average 10 hours and 55 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 85%. Hence, the air is normally humid.
The average wind speed is 6 kph (4 mph).

---

In November, the weather in Piacenza is usually quite mild. The average temperature is of 8.2 °C (47 °F), with a minimum of 5.1 °C (41.2 °F) and a maximum of 11.3 °C (52.3 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -1 °C (30 °F). However, it dropped to -6.2 °C (20.8 °F) in November 1998.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 18 °C (64 °F). However, it reached 21.4 °C (70.5 °F) in November 2004.
Precipitation amounts to 115 mm (4.5 in), distributed over 10 days.
The day lasts on average 9 hours and 30 minutes.
There are on average 2.5 hours of sunshine per day. So, the sun shines 27% of the time.
The average humidity is 90%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).

---

In December, the weather in Piacenza is usually cold. The average temperature is of 3.5 °C (38 °F), with a minimum of 0.4 °C (32.7 °F) and a maximum of 6.6 °C (43.9 °F).
On the coldest nights of the month, the temperature usually drops to around -6 °C (21.5 °F). However, it dropped to -11.8 °C (10.8 °F) in December 2005.
On the warmest days of the month, the temperature usually reaches around 13.5 °C (56.5 °F). However, it reached 20 °C (68 °F) in December 1991.
Precipitation amounts to 40 mm (1.6 in), distributed over 5 days.
The day lasts on average 8 hours and 50 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 2.5 hours of sunshine per day. So, the sun shines 28% of the time.
The average humidity is 89%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).