US National Weather Service Riverton Wyoming

US National Weather Service Riverton Wyoming Serving Western and Central Wyoming. Posts do not always reflect the most recent info. For current info visit weather.gov/riw
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Warm and dry conditions continue across western and central Wyoming into the upcoming weekend. Temperatures each day rea...
09/11/2026

Warm and dry conditions continue across western and central Wyoming into the upcoming weekend. Temperatures each day reach the upper 70s to mid 80s, with partly to mostly sunny skies. Elevated fire weather concerns continue, with gusty west winds each afternoon.

09/10/2026

A quick-moving weather system over northern Nevada, southeast Oregon, and southern Idaho will reach Wyoming Thursday evening and cross the state by around midday Friday. The increased cloud cover will keep temperatures a bit warmer overnight. There could be a few light showers or virga late Thursday evening until around sunrise Friday, mainly across far west Wyoming. Most areas should see more sun by Friday afternoon along with increasing westerly wind. Highs Friday will range from 75 to 85 degrees.

Elevated to critical fire weather conditions continue across the area today. Red Flag Warnings remain in effect from sou...
09/10/2026

Elevated to critical fire weather conditions continue across the area today. Red Flag Warnings remain in effect from southwestern portions of the state to Natrona County and include the Absaroka and Wind River Mountains. Winds are not expected to be as strong today, with gusts of 25 to 30 mph in place by mid-afternoon.

Warm and dry conditions continue the rest of the week, with elevated fire weather concerns. A cold front will move throu...
09/10/2026

Warm and dry conditions continue the rest of the week, with elevated fire weather concerns. A cold front will move through this weekend, bringing cooler and wetter weather across the state.

Above normal temperatures and gusty westerly wind Thursday give way to a cold front Friday. The front pushes south Frida...
09/09/2026

Above normal temperatures and gusty westerly wind Thursday give way to a cold front Friday. The front pushes south Friday across areas east of the Continental Divide during the day and early evening. If you have outdoor plans Friday evening, be prepared for it to be a bit chilly, especially across the northern Bighorn Basin.

Elevated to critical fire weather conditions will be in place again for many lower elevation areas. Red Flag Warnings ar...
09/09/2026

Elevated to critical fire weather conditions will be in place again for many lower elevation areas. Red Flag Warnings are in effect from southwestern portions of the state to Natrona County. Winds will be the lightest of the week, with gusts up to 25 mph in these areas. These conditions will return Thursday, but wind gusts of 25 to 35 mph will be more widespread.

Dry, warm, and breezy conditions continue through Thursday, leading to fire weather concerns each afternoon. Shower and ...
09/09/2026

Dry, warm, and breezy conditions continue through Thursday, leading to fire weather concerns each afternoon. Shower and thunderstorm chances increase on Friday ahead of a system that will usher in cooler temperatures and widespread rain potential for the weekend.

Widespread freezing temperatures are forecast for western Wyoming valleys and basins tonight. Many typically cold locati...
09/08/2026

Widespread freezing temperatures are forecast for western Wyoming valleys and basins tonight. Many typically cold locations will see a hard freeze, which will end the growing season, which is typical for this time of year.

It's that time of year where morning temperatures are starting to dip below freezing, especially across the lower elevat...
09/08/2026

It's that time of year where morning temperatures are starting to dip below freezing, especially across the lower elevations of western Wyoming. Here is a look at low temperatures from this morning. Expect similar temperatures again tonight into Wednesday morning. Note: The 72° on the eastern Wind River Range is incorrect.

Elevated to critical fire weather conditions will be in place again for many lower elevation areas. Red Flag Warnings ar...
09/08/2026

Elevated to critical fire weather conditions will be in place again for many lower elevation areas. Red Flag Warnings are in effect for portions east of the Divide as a result. Another cold front will move across the area this evening. Otherwise, conditions will remain dry with seasonal temperatures with clear skies today.

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Riverton, WY
82501

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