Weather in Chelsea, MT
Chelsea, Tuesday, 20 October, 12:41
Clear. Feels like 57°. High 62°, low 36°.
Monthly outlook for Chelsea, MT: average high 53.8°, average low 35.7°. That is 1.6° above the climate normal for October. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 22 October (66.7°), the coolest 27 October (23.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 52.6° | 53.1° | -0.3° |
| 30 October – 8 November | 55.7° | 46.3° | +5.2° |
| 9 November – 18 November | at normal | 40.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Poplar (7 mi).
0
Chelsea, Wednesday, 21 October
Mostly clear. High 63°, low 35°.
0Chelsea, Thursday, 22 October
Clear. High 67°, low 44°.
0.23
Chelsea, Friday, 23 October
Rain. High 65°, low 44°.
0Chelsea, Saturday, 24 October
Clear. High 48°, low 34°.
0.01Chelsea, Sunday, 25 October
Light rain. High 42°, low 31°.
0Chelsea, Monday, 26 October
Mostly clear. High 38°, low 28°.
0
Chelsea, Tuesday, 27 October
Overcast. High 47°, low 24°.
0
Chelsea, Wednesday, 28 October
Partly cloudy. High 47°, low 33°.
0Chelsea, Thursday, 29 October
Clear. High 47°, low 31°.
0Chelsea, Friday, 30 October
Partly cloudy. High 56°, low 31°.
0Chelsea, Saturday, 31 October
Overcast. High 46°, low 35°.
0Chelsea, Sunday, 1 November
Clear. High 56°, low 33°.
0Chelsea, Monday, 2 November
Overcast. High 62°, low 44°.
0Chelsea, Tuesday, 3 November
Clear. High 59°, low 45°.
0Chelsea, Wednesday, 4 November
Partly cloudy. High 54°, low 42°.
0.02Chelsea, Thursday, 5 November
Climate normal for this date — 60-year average.
0.02Chelsea, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Chelsea, Saturday, 7 November
Climate normal for this date — 60-year average.
0.03Chelsea, Sunday, 8 November
Climate normal for this date — 60-year average.
0.04Chelsea, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Chelsea, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.01Chelsea, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.03Chelsea, Thursday, 12 November
Climate normal for this date — 60-year average.
0.02Chelsea, Friday, 13 November
Climate normal for this date — 60-year average.
0.03Chelsea, Saturday, 14 November
Climate normal for this date — 60-year average.
0.02Chelsea, Sunday, 15 November
Climate normal for this date — 60-year average.
0.02Chelsea, Monday, 16 November
Climate normal for this date — 60-year average.
0.02Chelsea, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.03Chelsea, Wednesday, 18 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Chelsea, MT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Chelsea, MT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
64°Weather in Annapolis, MD69°Weather in Atlanta, GA74°Weather in Augusta, ME62°Weather in Austin, TX80°Weather in Baton Rouge, LA79°Weather in Bismarck, ND62°Weather in Boise, ID65°Weather in Boston, MA63°Weather in Carson City, NV64°Weather in Charleston, WV69°Weather in Charlotte Amalie, VI88°Weather in Cheyenne, WY67°Weather in Columbia, SC74°Weather in Columbus, OH68°Weather in Concord, NH67°Weather in Denver, CO65°Weather in Des Moines, IA69°Weather in Dover, DE69°Weather in Frankfort, KY72°Weather in Harrisburg, PA68°Weather in Hartford, CT67°Weather in Helena, MT51°Weather in Honolulu, HI77°Weather in Indianapolis, IN70°Weather in Jackson, MS74°Weather in Jefferson City, MO73°Weather in Juneau, AK39°Weather in Lansing, MI67°Weather in Lincoln, NE72°Weather in Little Rock, AR73°Weather in Madison, WI67°Weather in Montgomery, AL72°Weather in Montpelier, VT62°Weather in Nashville, TN74°Weather in Oklahoma City, OK72°Weather in Olympia, WA53°Weather in Phoenix, AZ85°Weather in Pierre, SD68°Weather in Providence, RI63°Weather in Raleigh, NC72°Weather in Richmond, VA71°Weather in Sacramento, CA59°Weather in Salem, OR59°Weather in Salt Lake City, UT68°Weather in San Juan, PR87°Weather in Santa Fe, NM63°Weather in Springfield, IL71°Weather in St. Paul, MN66°Weather in Tallahassee, FL75°Weather in Topeka, KS69°Weather in Trenton, NJ68°Weather in Washington, DC71°56°Weather in Thurlow, MT64°Weather in Tiber, MT54°Weather in Tiber Dam Camp, MT53°Weather in Tobacco, MT55°Weather in Toluca, MT65°Weather in Toole, MT55°Weather in Top O'Deep, MT49°Weather in Truly, MT50°Weather in Tunis, MT55°Weather in Tusler, MT62°Weather in Ulmer, MT62°Weather in Valleytown, MT57°Weather in Vendome, MT54°Weather in Verona, MT51°Weather in Vincent, MT55°Weather in Virden, MT49°Weather in Waco, MT64°Weather in Wade, MT61°Weather in Ware, MT57°