Calw Weather in September
Calw in September
The short of it: Calw in September averages a high of 18 °C (65 °F) and a low of 8 °C (47 °F), with 73 mm (2.9 in) of rain and about 12 h 30 min of daylight. Rated 3 of 5 for a visit; the best months are August and July. Source: TerraClimate climate normals, 1991–2020.
Average high 18° · low 8° · rain 73 mm · daylight 12 h 30 min
✦✦✦ Fair for a visit · best months: August & July
Thirty years of records give Calw an average September high of 18°, a low of 8° and some 73 mm of rain. Highs fall 5° against August, to near 18°; nights run about 8°. Wet spells are common — about 73 mm, the 11th wettest month.
The sun is up for about 12 h 30 min in mid-September, 110 minutes less than a month before.
For the traveller: pack layers, a wool coat and stout boots, and an oilskin besides. The Almanac rates September 3 of 5 for a visit; the finest months here are August and July.
Against its neighbours, Calw runs cooler than most and wetter than most in September. Herrenberg, 16 km to the SE, is 1° warmer by day.
September in Calw, by the numbers
- Warmth rank
- 4th warmest of 12
- Rain rank
- 11th wettest of 12
- Versus August
- 5° colder, 1.0 mm less rain
- Versus October
- 5° warmer
- Day–night spread
- 10°
- Snow season
- Dec–Mar
- Daylight, mid-month
- 12 h 30 min
- Average wind
- 9 km/h
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| HerrenbergBaden-Wurttemberg | 16 km SE | 19° | 8° | 64 mm |
| PforzheimBaden-Wurttemberg | 19 km N | 20° | 9° | 68 mm |
| BöblingenBaden-Wurttemberg | 20 km E | 19° | 9° | 63 mm |
| SindelfingenBaden-Wurttemberg | 20 km E | 19° | 9° | 63 mm |
| LeonbergBaden-Wurttemberg | 22 km ENE | 19° | 9° | 59 mm |
| MühlackerBaden-Wurttemberg | 27 km NNE | 20° | 9° | 62 mm |
| Vaihingen an der EnzBaden-Wurttemberg | 29 km NNE | 20° | 9° | 60 mm |
| RottenburgBaden-Wurttemberg | 30 km SSE | 20° | 8° | 58 mm |