Weather statistics, phenology and records

Monthly averages, climate normals, phenology, growing degree days and weather records for Pontedera (PI) - ITALY.

Highest temperature
41.0 C
13 Aug
Lowest temperature
-2.8 C
08 Jan
Total precipitation
293.2 mm
26 Rain days
Strongest wind gust
69.0 km/h
09 Jan

Monthly averages

Month Avg temp Max temp Min temp Precipitation Rain days
Jan 7.5 C 16.1 C -2.8 C 161.1 mm 12
Feb 10.2 C 19.1 C 0.7 C 112.2 mm 13
Mar -- -- -- -- --
Apr -- -- -- -- --
May -- -- -- -- --
Jun -- -- -- -- --
Jul 28.3 C 39.0 C 19.0 C 19.9 mm 1
Aug 29.7 C 41.0 C 21.0 C 0.0 mm 0
Sep -- -- -- -- --
Oct -- -- -- -- --
Nov -- -- -- -- --
Dec -- -- -- -- --

Season Tracker 2026

🌸 Spring days
60
Days with T_max ≥ 15°C
☀️ Summer days
45
Days with T_max ≥ 25°C
🔥 Tropical days
44
Days with T_max ≥ 30°C
❄️ Frost days
6
Days with T_min < 0°C
🧊 Ice days
0
Days with T_max < 0°C
🌧️ Precipitation days
26
Days with rain ≥ 0.1 mm

Seasonal milestones

Milestone 2026 Difference
🌸 First spring day 06 Feb 33 days earlier
☀️ First summer day 01 Jul 55 days later
🌡️ First tropical day 01 Jul 40 days later
❄️ Last spring frost 22 Jan 12 days earlier
🍂 First autumn frost — —
🧊 First ice day — —

Growing Degree Days (base 10 °C) — Total GDD: 883

Peak GDD period

Shows daily GDD bars and a 14-day rolling total so warm stretches stand out.

Best 14-day period
1 Aug – 14 Aug
283.4 GDD
Average per day: 20.2 GDD

What are Growing Degree Days?

Growing Degree Days (GDD) measure accumulated heat above a base temperature — not calendar days.

GDD = max(0, (Tmax + Tmin) / 2 − 10)

Each day contributes a value equal to how many degrees the average temperature exceeds 10 °C. A day with a high of 26 °C and a low of 12 °C contributes (26 + 12) / 2 − 10 = 9 GDD.

The total GDD for a year is the sum of all daily values. A warm summer can easily produce 1 000 – 1 500 GDD, which is why the total is much larger than 365.

Base temperature: 10 °C (growing threshold for most plants in temperate climates).

All-time records

Highest temperature
41.1 C 23 Aug 2023
#2
41.0 C 13 Aug 2026
#3
40.5 C 30 Jun 2025
#4
40.3 C 24 Aug 2023
#5
40.0 C 18 Jul 2022
Lowest temperature
-3.2 C 10 Feb 2023
#2
-3.1 C 09 Mar 2022
#3
-2.9 C 22 Jan 2024
#4
-2.8 C 08 Jan 2026
#5
-2.5 C 11 Feb 2023
Warmest day (avg)
35.0 C 18 Jul 2022
#2
32.9 C 30 Jun 2025
#3
31.7 C 14 Aug 2026
#4
31.3 C 21 Aug 2023
#5
31.1 C 01 Jul 2025
Coldest day (avg)
1.4 C 08 Jan 2026
#2
2.7 C 01 Jan 2026
#3
3.1 C 12 Jan 2026
#4
3.1 C 22 Dec 2024
#5
3.3 C 12 Jan 2021
Largest daily range
22.5 C 23 Mar 2022
#2
20.6 C 26 Mar 2022
#3
20.3 C 14 Apr 2022
#4
20.1 C 18 Jun 2024
#5
20.0 C 13 Aug 2026
Most precipitation (day)
178.6 mm 02 Nov 2023
#2
69.3 mm 08 Sep 2024
#3
66.9 mm 05 Apr 2022
#4
56.0 mm 30 Oct 2025
#5
44.7 mm 25 Nov 2025
Highest rain rate
83.4 mm 26 Jul 2026
#2
0.0 mm 14 Aug 2026
#3
0.0 mm 28 Jul 2026
#4
0.0 mm 01 Aug 2026
#5
0.0 mm 02 Aug 2026
Strongest wind gust
144.0 km/h 18 Aug 2022
#2
144.0 km/h 10 Nov 2023
#3
144.0 km/h 02 Dec 2023
#4
144.0 km/h 20 Dec 2024
#5
140.0 km/h 25 Jun 2024
Highest average wind
25.5 km/h 14 Aug 2026
#2
25.0 km/h 07 Aug 2026
#3
25.0 km/h 10 Aug 2026
#4
24.0 km/h 06 Aug 2026
#5
24.0 km/h 08 Aug 2026
Highest pressure
1035 hPa 17 Dec 2023
#2
1034 hPa 13 Feb 2023
#3
1034 hPa 16 Dec 2023
#4
1034 hPa 16 Dec 2024
#5
1033 hPa 10 Feb 2023
Lowest pressure
981 hPa 17 Jan 2023
#2
982 hPa 12 Feb 2026
#3
983 hPa 22 Nov 2022
#4
983 hPa 03 Nov 2023
#5
984 hPa 06 Feb 2026
Highest humidity
99% 02 Jan 2026
#2
99% 09 Jan 2026
#3
99% 24 Jan 2026
#4
99% 25 Jan 2026
#5
99% 26 Jan 2026
Lowest humidity
13% 28 Mar 2022
#2
15% 23 Mar 2022
#3
15% 27 Mar 2022
#4
16% 15 Mar 2023
#5
17% 22 Mar 2022
Highest UV index
8 02 Jul 2026
#2
7 01 Jul 2026
#3
7 03 Jul 2026
#4
7 04 Jul 2026
#5
7 05 Jul 2026
Highest solar radiation
882 W/m² 02 Jul 2026
#2
815 W/m² 03 Jul 2026
#3
784 W/m² 01 Jul 2026
#4
782 W/m² 06 Jul 2026
#5
781 W/m² 05 Jul 2026
Most sunshine hours
3.2 h 14 Aug 2026

Compare periods

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