Weather in Altona, CO
Altona, Tuesday, 20 October, 16:40
Mostly clear. Feels like 67°. High 68°, low 43°.
Monthly outlook for Altona, CO: average high 54.6°, average low 38°. That is 1.1° below the climate normal for October. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 4 days and 0.9 inches. The warmest day looks like 23 October (69.8°), the coolest 27 October (30.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 53.5° | 59.1° | -3.1° |
| 30 October – 8 November | 56.3° | 52.8° | +1.9° |
| 9 November – 18 November | at normal | 49.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Boulder (7 mi).
0
Altona, Wednesday, 21 October
Partly cloudy. High 69°, low 43°.
0
Altona, Thursday, 22 October
Overcast. High 66°, low 44°.
0.08
Altona, Friday, 23 October
Rain. High 70°, low 47°.
0.54Altona, Saturday, 24 October
Rain. High 45°, low 36°.
0.07Altona, Sunday, 25 October
Light rain. High 40°, low 35°.
0.19
Altona, Monday, 26 October
Snow. High 39°, low 33°.
0.13Altona, Tuesday, 27 October
Light snow. High 39°, low 30°.
0
Altona, Wednesday, 28 October
Clear. High 50°, low 32°.
0Altona, Thursday, 29 October
Overcast. High 49°, low 32°.
0.02Altona, Friday, 30 October
Light rain. High 57°, low 42°.
0.01Altona, Saturday, 31 October
Light rain. High 56°, low 40°.
0Altona, Sunday, 1 November
Mostly clear. High 57°, low 38°.
0Altona, Monday, 2 November
Clear. High 53°, low 32°.
0Altona, Tuesday, 3 November
Partly cloudy. High 61°, low 40°.
0Altona, Wednesday, 4 November
Clear. High 53°, low 38°.
0.03Altona, Thursday, 5 November
Climate normal for this date — 60-year average.
0.04Altona, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Altona, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Altona, Sunday, 8 November
Climate normal for this date — 60-year average.
0.08Altona, Monday, 9 November
Climate normal for this date — 60-year average.
0.04Altona, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.04Altona, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.04Altona, Thursday, 12 November
Climate normal for this date — 60-year average.
0.04Altona, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Altona, Saturday, 14 November
Climate normal for this date — 60-year average.
0.05Altona, Sunday, 15 November
Climate normal for this date — 60-year average.
0.03Altona, Monday, 16 November
Climate normal for this date — 60-year average.
0.05Altona, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.03Altona, 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 Altona, CO 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 Altona, CO 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
58°Weather in Annapolis, MD66°Weather in Atlanta, GA74°Weather in Augusta, ME55°Weather in Austin, TX82°Weather in Baton Rouge, LA80°Weather in Bismarck, ND73°Weather in Boise, ID73°Weather in Boston, MA56°Weather in Carson City, NV69°Weather in Charleston, WV62°Weather in Charlotte Amalie, VI
81°Weather in Cheyenne, WY64°Weather in Columbia, SC72°Weather in Columbus, OH66°Weather in Concord, NH55°Weather in Denver, CO71°Weather in Des Moines, IA72°Weather in Dover, DE62°Weather in Frankfort, KY71°Weather in Harrisburg, PA63°Weather in Hartford, CT63°Weather in Helena, MT61°Weather in Honolulu, HI79°Weather in Indianapolis, IN69°Weather in Jackson, MS78°Weather in Jefferson City, MO73°Weather in Juneau, AK41°Weather in Lansing, MI65°Weather in Lincoln, NE74°Weather in Little Rock, AR76°Weather in Madison, WI66°Weather in Montgomery, AL76°Weather in Montpelier, VT49°Weather in Nashville, TN75°Weather in Oklahoma City, OK75°Weather in Olympia, WA64°Weather in Phoenix, AZ91°Weather in Pierre, SD75°Weather in Providence, RI57°Weather in Raleigh, NC69°Weather in Richmond, VA65°Weather in Sacramento, CA69°Weather in Salem, OR72°Weather in Salt Lake City, UT73°Weather in San Juan, PR81°Weather in Santa Fe, NM68°Weather in Springfield, IL70°Weather in St. Paul, MN68°Weather in Tallahassee, FL74°Weather in Topeka, KS71°Weather in Trenton, NJ64°Weather in Washington, DC67°68°Weather in Lester, CO68°Weather in Monson, CO68°Weather in Rouse, CO68°Weather in Rugby, CO68°Weather in Reilly Canyon, CO66°Weather in Vallorso, CO68°Weather in Earl, CO72°Weather in Zamara, CO66°Weather in Parras Plaza, CO64°Weather in Cordova Plaza, CO67°Weather in Medina Plaza, CO67°Weather in Beshoar, CO71°Weather in Engleville, CO69°Weather in Tercio, CO64°Weather in Velasquez Plaza, CO67°Weather in Morley, CO69°Weather in Barela, CO73°Weather in Abeyta, CO73°Weather in Wootton, CO69°