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Hazardous Heat in the Western U.S.; Heavy Rain and Flooding Potential in the Southern Rockies

Widespread high temperatures in the 90s with heat indices exceeding 100 degrees will persist across the western U.S. this weekend into next week. Some daily high temperature records are forecast to be tied or broken. Monsoon conditions continue to linger across the Southern Rockies posing a heavy rainfall threat which may lead to additional flash flooding concerns. Read More >


Recent Temperatures & Precipitation in Missoula, MT and Kalispell, MT


Graphs of daily average temperatures, their departures from normal, as well as daily maximum and daily minimum temperatures over the past 30, 90, and 365 days. Shading reflects daily departures from normal using standard convention: red for warmer than normal, blue for colder than normal.


Graphs of precipitation departures from normal (top chart) with daily accumulation (bottom chart) over 30, 90, and 365 days are shown here. Shading for rainfall departures follows standard convention: green for wetter than normal, brown for drier than normal.


Flathead Lake Climatology

Flathead Lake level (in ft) and lake temperature (in degrees F) graphs. Lake level observations were taken from Salish Point near Polson and lake temperatures were provide by Flathead Lake Biological Station.

Temperature and precipitation outlooks for the 6-10 day and 8-14 day periods. Issued daily by the NOAA/NWS Climate Prediction Center. Click for explanation of Temperature or Precipitation.

6-10 Day Outlook



8-14 Day Outlook


One Month and Three-Month temperature and precipitation outlooks. The outlooks are issued by the Climate Prediction Center on the last day of each month (valid for the following month), with an update to the outlook on the third Thursday of the following month.

One Month Outlook

Two Week Lead Time Forecast


Zero Lead Time Forecast



Three Month Outlook

Links to annual observed and mean high, low and average temperature (in degrees F) as well as precipitation and snowfall (in inches) for Missoula, Kalispell and Butte. Values are based on the 1981-2010 normals.

These Graphs Can Be Found At:

Northern Rockies Climate Facts

Montana Idaho

Missoula, MT Climatology for Holidays and Other Significant Dates


Kalispell, MT Climatology for Holidays and Other Significant Dates


Butte, MT Climatology for Holidays and Other Significant Dates


Orofino, ID Climatology for Holidays and Other Significant Dates

Historical Map


If the map will not load, allow browser to load unsafe script or go to Historical Map.

NOWData (NOAA Online Weather Data) is a user interface available to access a variety of location-based climate information and records for NWS Missoula's area of responsibility.

Here are some step-by-step instructions for using NOWData:
  1. Location >>
    • Select a location by simply clicking on a location name in the list, or press the "View Map" button to bring up a map of locations.
    • NOTE: For Missoula, MT climate, it is recommended that users use the "Missoula Area" location, which includes climate records prior to 1948.
  2. Product >>
    • Select one of nine available climate products using the radio buttons. A description of each product can be found in the yellow "Product Description" section.
  3. Options >>
    • Select from a host of options that will be available to you. Options will vary depending on which product you chose in Step 2.
    • For products which have a "Year Range:", typing in the phrase "por" for a starting range will return information across that location's period of record.
  4. View >>
    • Press the "Go" button, and a seperate window will pop open to view your specified climate product, location and options.


Annual Precipitation Maps



Northern Rockies Northwest Montana
Southwest Montana North Central Idaho
Lemhi Idaho



Monthly Precipitation Maps



January February
March April
May June
July August
September October
November December



Astronomical Data


Sun and Moon


Tides and Currents




The U.S. Naval Observatory (USNO) computes astronomical data. Therefore, the NWS does not record, certify, or authenticate astronomical data. Computed times of sunrise, sunset, moonrise, moonset; and twilight, moon phases and other astronomical data are available from USNO's Astronomical Applications Department ( See for information on using these data for legal purposes.