Boulder Weather Forecast

Today 19 Sep
- 7
- 23
Mostly sunny
Sat 20 Sep
- 8
- 24
Sunny
Sun 21 Sep
- 9
- 26
Sunny
Mon 22 Sep
- 9
- 25
Sunny
Tue 23 Sep
- 9
- 27
Sunny
Wed 24 Sep
- 11
- 29
Sunny
Thu 25 Sep
- 11
- 32
Sunny

Today 19 Sep
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 Sep
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 Sep
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 Sep
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 Sep
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Wed 24 Sep
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 25 Sep
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm

Today 19 Sep Kalgoorlie

Mostly sunny. Light winds becoming southerly 15 to 20 km/h in the early afternoon then becoming light in the evening.

Boulder Temperature Statistics View More

September Temperature

Kalgoorlie-Boulder Airport (3km)

Lowest 11 July, 2025
-0.5 °C
Average 2025
18.7 °C
Highest 9 February, 2025
46.4 °C
Lowest 16 August, 2025
-0.2 °C
Average August
13.1 °C
Highest 13 August, 2025
28.3 °C
Lowest 17 September, 2025
3.2 °C
Average September
14 °C
Highest 13 September, 2025
30.1 °C

Climate (2020–Present)

Kalgoorlie-Boulder Airport (3km)

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Average Low 2020–2025
12.6 °C
Average 2020–2025
19.1 °C
Average High 2020–2025
26.1 °C

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