St Clair Weather in December
St Clair in December
The short of it: St Clair in December averages a high of 28 °C (82 °F) and a low of 16 °C (60 °F), with 78 mm (3.1 in) of rain and about 14 h 23 min of daylight. Rated 3 of 5 for a visit; the best months are September and August. Source: TerraClimate climate normals, 1991–2020.
Average high 28° · low 16° · rain 78 mm · daylight 14 h 23 min
✦✦✦ Fair for a visit · best months: September & August
Thirty years of records give St Clair an average December high of 28°, a low of 16° and some 78 mm of rain. Much like November: highs about 28°, nights near 16°. Easy travelling weather. Wet spells are common — about 78 mm, the 5th wettest month.
The sun is up for about 14 h 23 min in mid-December, 27 minutes more than a month before.
For the traveller: pack light clothes and a jacket for the evening, and an oilskin besides. The Almanac rates December 3 of 5 for a visit; the finest months here are September and August.
Against its neighbours, St Clair runs cooler than most and about as wet in December. Mount Druitt, 5 km to the NE, is 1° warmer by day.
December in St Clair, by the numbers
- Warmth rank
- 3rd warmest of 12
- Rain rank
- 5th wettest of 12
- Versus November
- 2° warmer, 1.0 mm less rain
- Versus January
- 2° colder
- Day–night spread
- 12°
- Snow season
- seldom any
- Daylight, mid-month
- 14 h 23 min
- Average wind
- 11 km/h
Neighbouring Towns
December averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| Mount DruittNew South Wales | 5 km NE | 28° | 16° | 79 mm |
| Glenmore ParkNew South Wales | 11 km W | 28° | 16° | 86 mm |
| Quakers HillNew South Wales | 12 km NE | 28° | 16° | 72 mm |
| BlacktownNew South Wales | 13 km ENE | 28° | 16° | 71 mm |
| Seven HillsNew South Wales | 14 km E | 28° | 16° | 71 mm |
| GreystanesNew South Wales | 15 km E | 28° | 16° | 74 mm |
| GlenwoodNew South Wales | 15 km ENE | 28° | 16° | 72 mm |
| FairfieldNew South Wales | 17 km ESE | 28° | 17° | 72 mm |