unseasonable

adjective

un·​sea·​son·​able

ˌən-ˈsēz-nə-bəl, 

-ˈsē-zᵊn-ə- 

1

: occurring at other than the proper time : untimely

… she made several excursions over to Canterbury to see me, and always at unseasonable hours …

—Charles Dickens

2

: not being in season

3

a

: not normal for the season of the year

unseasonable weather

b

: marked by unseasonable weather

an unseasonable summer

unseasonableness noun

unseasonably

ˌən-ˈsēz-nə-blē, 

-ˈsē-zᵊn-ə- 

adverb

Synonyms of unseasonable

• early
• unexpected
• sudden
• untimely
• premature
• precocious
• inopportune

Examples of unseasonable in a Sentence

an unseasonable snowstorm in early November

Recent Examples on the Web

The breeze should calm some on Saturday, when overcast skies and an unseasonable chill is expected. —Julia James, Dallas Morning News, 27 Mar. 2026

Gabi Rae, a spokesperson for the town, said Erie was perilously close to having taps run dry because so many residents had started watering their lawns early amid the unseasonable heat. —Evan Bush, NBC news, 27 Mar. 2026

As an unseasonable heatwave descended last week, auto mechanic Gustavo Gonzalez, 44, sat on a couch at his lot beneath an oak tree. —Grant Stringer, Mercury News, 26 Mar. 2026

There's a high-pressure system in the atmosphere causing unseasonable heat over Western states. —Ray Stern, AZCentral.com, 25 Mar. 2026

Word History

First Known Use

15th century, in the meaning defined at sense 1

Rhymes for unseasonable

• reasonable
• seasonable
• treasonable

Kids Definition

unseasonable

adjective

un·​sea·​son·​able ˌən-ˈsēz-nə-bəl 

-ˈsēz-ᵊn-ə-

1

: happening or coming at the wrong time : untimely

an unseasonable visit

2

: not normal for the season of the year

unseasonable weather

unseasonably

-blē 

adverb