Watering gardens in St Louis, Missouri

Water today

It is over a fortnight since any rain reached the roots.

Updated this morning
Today

Has it rained enough in St Louis?

The last rain heavy enough to soak in fell over a week ago. What has fallen since wet the leaves and no more.

St Louis has had 14.5mm of rain in the last 30 days. A normal October here brings 90.6mm, so that is about 16% of what the ground usually gets — and the driest October in 30 years was 9.9mm.

Rain reaching the roots · 14 days
17 OctToday
Thirty years

Rain in St Louis through a normal year

Across a normal year St Louis gets about 1131.7mm of rain, most of it in May (134.6mm) and least in February (64mm).

A normal October in St Louis has rain on 11 days. Only 8 of them bring enough to reach a root.

That makes St Louis one of the drier places this site covers in the United States in October — 16th of 30, against Seattle at the wet end (131.5mm) and Las Vegas at the dry end (8.4mm).

JFebMAMayJJASOND
Average rainfall by month, 1995–2024
What it means

What that means for what you grow

  • Pots and hanging basketsWorst hit, and first to suffer. Very little soil, fully exposed, and nothing to fall back on — in this weather they can empty in a day.
  • Salad and leafy vegShallow-rooted and quick to bolt once they run dry. First priority of anything in the ground.
  • Beds and bordersA long soak that reaches the roots is worth more than a daily sprinkle, which only wets the surface and is gone by lunchtime.
  • Established shrubs and treesFine as they are. They draw from far deeper than a dry spell reaches.