greek letter. It looks like a thunder flash.

black sun with rays

cloudy Weather

umbrella or rainy wheater

snowman

comet

sun

white sun with rays

first quarter moon

last quarter moon

earth

hot springs

snowflake

tight trifoliate snowflake

heavy chevron snowflake

White Sun Behind Cloud with Rain

White Sun Behind Cloud

Sun Behind Cloud

White Sun with Small Cloud

Cloud with Lightning

Thunder Cloud and Rain

Cloud with Rain

Cloud

Snowflake

High Voltage Sign

Sun with Face

Black Sun with Rays

Wind Blowing Face

Snowman Without Snow

Snowman

Cloud with Snow

Rainbow

Fog

Cloud with Tornado

Dash Symbol

Water Wave

Splashing Sweat Symbol

Droplet

Umbrella with Rain Drops

Umbrella

Closed Umbrella

Gloves

Freezing Face

Overheated Face

High Brightness Symbol

Low Brightness Symbol

Ice Cube

Scarf