Guide · Rain and thunderstorms

Walking your dog in rain and thunderstorms: when to go, when to wait

Guideline values for a healthy dog, not veterinary advice. Last updated: October 1, 2026.

In short: Rain is a comfort question, not a risk. A thunderstorm is a risk. In between lies the wind: from gusts of 37 mph (60 km/h) it gets unpleasant, from 50 mph (80 km/h) branches come down.

Most showers pass in 20 to 40 minutes. If you read the radar, you walk in the gap, not in the rain.

Rain: uncomfortable, not dangerous

A healthy dog comes to no harm in rain. The walk rating therefore puts rain at yellow at most, never red, and only for heavy rain from 0.4 inches (10 mm) per hour. Everything below that is drizzle to ordinary steady rain: have a towel ready and go.

Two caveats: short-coated, small, and old dogs cool down fast when wet, especially below 50°F (10°C) and in wind. A rain jacket helps, and the walk may be shorter. And a dog that simply dislikes rain is allowed to; in steady rain the essentials are enough.

Finding the dry gap

A look out the window tells you whether it is raining now. The radar tells you how much longer. On the radar a shower is a cell that moves with the wind; from its direction and speed you can tell when it will have passed your spot. That lets you plan:

A cell is passing over you right now: wait 20 to 40 minutes, then it is usually through.
A cell arrives in 30 minutes: a short walk right now, back before the rain.
Steady rain, a sheet instead of cells: no gap in sight. Jacket on, short walk, towel.

The radar for the United States comes from NOAA's MRMS system and updates every two minutes; the hourly forecast for the next 24 hours comes from the National Blend of Models. Both have gaps: at the edge of a radar's range and in the mountains the radar does not see everything, and a hole in the picture means "no data," not "no rain."

Thunderstorms: stay inside

In a thunderstorm the walk rating is red, regardless of temperature and rain. Two reasons: lightning strikes dogs outdoors too, and many dogs panic at thunder. A dog that tears loose in panic is the more common danger than the lightning itself.

When thunder roars, go indoors. That is the National Weather Service rule, and it has no exception for a quick walk. If you can hear thunder, lightning is close enough to strike.
Wait 30 minutes after the last thunder before starting the walk. Lightning also strikes at the edge of a cell.
Go before. Thunderstorms show up on the radar as rapidly growing, intense cells. The short walk beforehand saves the panic in the middle of it.
For a fearful dog: harness, no retractable leash, a safe spot at home. A frightened dog needs calm, not consolation mid-panic.

Wind and storms

Wind is rarely a problem for the dog itself, but it is for the route. From gusts above 37 mph (60 km/h) the rating is yellow, from above 50 mph (80 km/h) red: then branches fall, and the woods are no place for a walk. When the National Weather Service issues a wind warning, the official alert applies.

After the walk

Towel off, especially the belly, paws, and ears. Wet fur keeps cooling the dog for hours.
Check the paws. Softened pads tear more easily; mud between the toes irritates the skin.
No drinking from puddles after heavy rain. Washed-off road salt, oil, and fertilizer end up exactly there.

In the app

PawWeather tells you before it starts to drip.

NOAA's radar every two minutes for your exact spot. The rain timeline shows as a line when it starts and when it is dry again. With notifications, the app alerts you before the cell reaches you and when the next dry window opens. Thunderstorms and gusts are in the same rating. Radar and rating are free, no account.