unseasonable

adjective

un·​sea·​son·​able

ˌən-ˈsēz-nə-bəl,

-ˈsē-zᵊn-ə- 

1

: occurring at other than the proper time : untimely

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

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

Examples of unseasonable in a Sentence

an unseasonable snowstorm in early November

Recent Examples on the Web

For potted geraniums, consider bringing them indoors if an unseasonable chilly night is forecasted. —Andy Wilcox, Better Homes & Gardens, 20 June 2025

An unseasonable series of thunderstorms were sweeping across Southern California on Tuesday, bringing with them the potential for fire-starting lightning strikes in areas with limited rainfall. —Clara Harter, Los Angeles Times, 4 June 2025

It’s been a record-hot May in Iceland, while parts of Greenland and Arctic Canada have also been feeling unseasonable heat. —Mary Gilbert, CNN Money, 21 May 2025

On our last morning, though, the sun finally emerged, melting the unseasonable snow. —Jeff Chu, Travel + Leisure, 13 Apr. 2025

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