Cornwall Weather Forecast

Today 20 Jul
- 5
- 15
Partly cloudy
Tue 21 Jul
- 6
- 15
Partly cloudy
Wed 22 Jul
- 8
- 14
Shower or two
Thu 23 Jul
- 1
- 11
Possible shower
Fri 24 Jul
- 3
- 11
Partly cloudy
Sat 25 Jul
- 6
- 15
Partly cloudy
Sun 26 Jul
- 4
- 15
Partly cloudy

Today 20 Jul
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Tue 21 Jul
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Wed 22 Jul
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Thu 23 Jul
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Fri 24 Jul
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Sat 25 Jul
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Sun 26 Jul
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm

Today 20 Jul East Coast

Partly cloudy. Winds northwesterly 15 to 25 km/h. Daytime maximum temperatures between 11 and 16.

Cornwall Temperature Statistics View More

July Temperature

St Helens Aerodrome (27km)

Lowest 22 June, 2026
2.6 °C
Average 2026
14.4 °C
Highest 7 January, 2026
33.6 °C
Lowest 22 June, 2026
2.6 °C
Average June
10.8 °C
Highest 10 June, 2026
18.4 °C
Lowest 11 July, 2026
3.4 °C
Average July
9.5 °C
Highest 16 July, 2026
17.2 °C

Climate (2021–2026)

St Helens Aerodrome (27km)

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Average Low 2021–2026
9.4 °C
Average 2021–2026
13.4 °C
Average High 2021–2026
18.3 °C

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