Grahamstown Lake Weather Forecast

Today 17 Dec
- 18
- 28
Clear
Thu 18 Dec
- 15
- 35
Sunny
Fri 19 Dec
- 21
- 39
Sunny morning. Possible storm
Sat 20 Dec
- 20
- 33
Possible shower or storm
Sun 21 Dec
- 20
- 40
Mostly sunny
Mon 22 Dec
- 23
- 33
Shower or two
Tue 23 Dec
- 21
- 31
Shower or two

Today 17 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Thu 18 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Fri 19 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Sat 20 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Sun 21 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Mon 22 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Tue 23 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm

Today 17 Dec Hunter

Clear. Winds northeast to southeasterly 15 to 20 km/h becoming light in the late evening.

Grahamstown Lake Temperature Statistics View More

December Temperature

Williamtown RAAF Base (5km)

Lowest 17 July, 2025
2.3 °C
Average 2025
18.4 °C
Highest 28 January, 2025
40.7 °C
Lowest 12 November, 2025
8.3 °C
Average November
21.7 °C
Highest 26 November, 2025
37.7 °C
Lowest 2 December, 2025
11.3 °C
Average December
22.6 °C
Highest 6 December, 2025
40.2 °C

Climate (2020–Present)

Williamtown RAAF Base (5km)

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Average Low 2020–2025
13.3 °C
Average 2020–2025
18 °C
Average High 2020–2025
23.7 °C

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