St Johns Weather Forecast

Today 19 May
- 8
- 16
Partly cloudy
Wed 20 May
- 7
- 17
Shower or two
Thu 21 May
- 7
- 18
Partly cloudy
Fri 22 May
- 7
- 18
Partly cloudy
Sat 23 May
- 9
- 18
Partly cloudy
Sun 24 May
- 7
- 16
Shower or two
Mon 25 May
- 7
- 16
Shower or two

Today 19 May
1. 12 am
2. 3 am
3. 6 am
4. 9 am
5. 12 pm
6. 3 pm
7. 6 pm
8. 9 pm
Wed 20 May
1. 12 am
2. 3 am
3. 6 am
4. 9 am
5. 12 pm
6. 3 pm
7. 6 pm
8. 9 pm
Thu 21 May
1. 12 am
2. 3 am
3. 6 am
4. 9 am
5. 12 pm
6. 3 pm
7. 6 pm
8. 9 pm
Fri 22 May
1. 12 am
2. 3 am
3. 6 am
4. 9 am
5. 12 pm
6. 3 pm
7. 6 pm
8. 9 pm
Sat 23 May
1. 12 am
2. 3 am
3. 6 am
4. 9 am
5. 12 pm
6. 3 pm
7. 6 pm
8. 9 pm
Sun 24 May
1. 12 am
2. 3 am
3. 6 am
4. 9 am
5. 12 pm
6. 3 pm
7. 6 pm
8. 9 pm
Mon 25 May
1. 12 am
2. 3 am
3. 6 am
4. 9 am
5. 12 pm
6. 3 pm
7. 6 pm
8. 9 pm

Today 19 May Mount Lofty Ranges

Partly cloudy. Slight chance of a shower about the southern Fleurieu Peninsula, near zero chance elsewhere. Winds southwesterly 15 to 25 km/h.

St Johns Temperature Statistics View More

May Temperature

Nuriootpa (PIRSA Research Centre) (12km)

Lowest 14 April, 2026
3.9 °C
Average 2026
19.6 °C
Highest 26 January, 2026
45.5 °C
Lowest 14 April, 2026
3.9 °C
Average April
16.4 °C
Highest 21 April, 2026
30.1 °C
Lowest 7 May, 2026
5 °C
Average May
14.3 °C
Highest 1 May, 2026
27.9 °C

Climate (2021–Present)

Nuriootpa (PIRSA Research Centre) (12km)

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Average Low 2021–2026
9.4 °C
Average 2021–2026
15.2 °C
Average High 2021–2026
21.9 °C

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