September weather in Granger, WA
The average temperature in Granger in September is 61.7°F (44.9°F–78.5°F). Average precipitation: 0.27 inches.
September is a fall month in Granger, and is warmer than the annual average of 50.2°F. Daily temperatures swing about 33.6°F between overnight low and afternoon high. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
78.5°F
Avg Low
44.9°F
Precipitation
0.27 in
Daylight
12h 19m
September records in Granger
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.9°F (2022) | 41.0°F (2021) | 0.11 in (2023) |
| September 2 | 96.1°F (2024) | 41.0°F (2021) | 0.04 in (2016) |
| September 3 | 97.0°F (2024) | 39.0°F (2015) | 0.00 in (2013) |
| September 4 | 95.0°F (2025) | 39.9°F (2015) | 0.00 in (2013) |
| September 5 | 91.9°F (2020) | 42.1°F (2016) | 0.03 in (2015) |
| September 6 | 91.9°F (2020) | 39.0°F (2015) | 0.25 in (2013) |
| September 7 | 93.0°F (2024) | 45.0°F (2014) | 0.11 in (2016) |
| September 8 | 89.1°F (2018) | 44.1°F (2015) | 0.10 in (2019) |
| September 9 | 90.0°F (2021) | 41.0°F (2020) | 0.03 in (2025) |
| September 10 | 90.0°F (2024) | 42.1°F (2016) | 0.04 in (2025) |
| September 11 | 89.1°F (2013) | 43.0°F (2016) | 0.68 in (2021) |
| September 12 | 91.9°F (2013) | 36.0°F (2014) | 0.00 in (2013) |
| September 13 | 96.1°F (2013) | 37.0°F (2014) | 0.01 in (2022) |
| September 14 | 93.0°F (2013) | 37.0°F (2014) | 0.09 in (2025) |
| September 15 | 91.0°F (2013) | 36.0°F (2015) | 0.00 in (2013) |
| September 16 | 90.0°F (2013) | 36.0°F (2015) | 0.01 in (2013) |
| September 17 | 88.0°F (2023) | 36.0°F (2015) | 0.00 in (2013) |
| September 18 | 86.0°F (2025) | 37.0°F (2018) | 0.18 in (2022) |
| September 19 | 87.1°F (2025) | 36.0°F (2018) | 0.07 in (2021) |
| September 20 | 87.1°F (2025) | 39.0°F (2018) | 0.01 in (2019) |
| September 21 | 88.0°F (2025) | 35.1°F (2017) | 0.06 in (2017) |
| September 22 | 86.0°F (2014) | 35.1°F (2017) | 0.07 in (2025) |
| September 23 | 82.9°F (2014) | 35.1°F (2015) | 0.07 in (2013) |
| September 24 | 86.0°F (2024) | 35.1°F (2018) | 0.02 in (2020) |
| September 25 | 88.0°F (2024) | 37.0°F (2018) | 0.38 in (2014) |
| September 26 | 84.0°F (2021) | 37.0°F (2018) | 0.03 in (2023) |
| September 27 | 84.0°F (2016) | 34.0°F (2015) | 0.11 in (2023) |
| September 28 | 84.0°F (2022) | 34.0°F (2015) | 0.31 in (2021) |
| September 29 | 82.0°F (2025) | 36.0°F (2015) | 0.05 in (2013) |
| September 30 | 80.1°F (2020) | 37.0°F (2015) | 0.09 in (2017) |