Boulder Weather Forecast

Today 15 Sep
- 11
- 22
Cloudy
Wed 16 Sep
- 13
- 26
Partly cloudy
Thu 17 Sep
- 13
- 32
Sunny
Fri 18 Sep
- 19
- 33
Partly cloudy
Sat 19 Sep
- 13
- 24
Morning shower or two
Sun 20 Sep
- 9
- 25
Sunny
Mon 21 Sep
- 12
- 31
Mostly sunny

Today 15 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 16 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 17 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
Fri 18 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 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
Sun 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
Mon 21 Sep
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm

Today 15 Sep Kalgoorlie

Cloudy. Slight chance of a shower. The chance of a thunderstorm during the morning and afternoon. Winds east to southeasterly 20 to 30 km/h.

Boulder Temperature Statistics View More

September Temperature

Kalgoorlie-Boulder Airport (3km)

Lowest 29 July, 2026
0.2 °C
Average 2026
18.1 °C
Highest 4 January, 2026
45 °C
Lowest 12 August, 2026
1.1 °C
Average August
13.7 °C
Highest 31 August, 2026
29.5 °C
Lowest 5 September, 2026
4.9 °C
Average September
14.4 °C
Highest 12 September, 2026
27.3 °C

Climate (2021–2026)

Kalgoorlie-Boulder Airport (3km)

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Average Low 2021–2026
12.6 °C
Average 2021–2026
19.2 °C
Average High 2021–2026
26.2 °C

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