St Marys Weather Forecast

Today 21 May
- 3
- 15
Mostly sunny
Fri 22 May
- 4
- 16
Mostly sunny
Sat 23 May
- 6
- 15
Shower or two
Sun 24 May
- 10
- 17
Shower or two
Mon 25 May
- 9
- 16
Shower or two
Tue 26 May
- 8
- 15
Showers
Wed 27 May
- 9
- 16
Shower or two

Today 21 May
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 22 May
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 23 May
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 24 May
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Mon 25 May
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 26 May
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 27 May
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 21 May East Coast

Mostly sunny. Light winds. Daytime maximum temperatures between 12 and 16.

St Marys Temperature Statistics View More

May Temperature

St Helens Aerodrome (28km)

Lowest 19 April, 2026
4.3 °C
Average 2026
16 °C
Highest 7 January, 2026
33.6 °C
Lowest 19 April, 2026
4.3 °C
Average April
14.3 °C
Highest 1 April, 2026
26 °C
Lowest 20 May, 2026
5.1 °C
Average May
13.6 °C
Highest 1 May, 2026
24.9 °C

Climate (2021–Present)

St Helens Aerodrome (28km)

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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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