Rain

Rain has been studied in 4 papers since 2016: 3 observational studies in people, 1 in animals; 1 in the past year. The newest paper, Jul 6, 2026: “Forecasting fractures: Weather-associated variability in hip fracture and isolated distal radius fracture incidence”.

4 papers study it3 findingsUpdated Jul 6, 2026

“For HFs, rain days correlated with higher incidence in older and geriatric adults, while snow days were strongest in younger adults.”

None of its findings points the other way.

What did studies of Rain find?

Studies of Rain measured 1 outcome; the most studied are reproductive probability (1 study).

Reproductive probability

upin E. ferus1

1 study

Rain increases reproductive probability in E. ferus.
“increased amounts of late-summer rain during this early age together with more late-summer rain during the females' current pregnancy led to an increased reproductive probability in 2-3-year-olds.”
Animalsfemales
Age-specific effects of density and weather on body condition and birth rates in a large herbivore, the Przewalski's horse
OecologiaNov 16, 2023

Studies link Rain with 2 measures, most often distal radius fracture (1 study) and hip fracture (1).

Distal radius fracture

upin humans1

1 study

Rain is linked with a higher risk of distal radius fracture in humans.
“For DRFs, rain and snow days increased incidence in both age groups, especially < 65 years.”
Humans
Forecasting fractures: Weather-associated variability in hip fracture and isolated distal radius fracture incidence
International journal of biometeorologyJul 6, 2026