Weather in Castalia, IA
Castalia, Tuesday, 20 October, 03:49
Clear. Feels like 46°. High 69°, low 42°.
Monthly outlook for Castalia, IA: average high 54.5°, average low 37.1°. That is 0.8° above the climate normal for October. Precipitation is expected on 2 days (about 1.0 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 21 October (70°), the coolest 28 October (23.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 57.8° | 54.6° | +1.8° |
| 30 October – 8 November | 49.1° | 49.6° | -0.3° |
| 9 November – 18 November | at normal | 44.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — West Union (13 mi).
0
Castalia, Wednesday, 21 October
Clear. High 70°, low 42°.
0Castalia, Thursday, 22 October
Clear. High 68°, low 49°.
0
Castalia, Friday, 23 October
Mostly clear. High 67°, low 50°.
0.01
Castalia, Saturday, 24 October
Light rain. High 68°, low 55°.
0.07Castalia, Sunday, 25 October
Light rain. High 62°, low 49°.
0.91Castalia, Monday, 26 October
Rain. High 45°, low 36°.
0
Castalia, Tuesday, 27 October
Partly cloudy. High 39°, low 27°.
0Castalia, Wednesday, 28 October
Clear. High 40°, low 23°.
0Castalia, Thursday, 29 October
Clear. High 50°, low 29°.
0Castalia, Friday, 30 October
Partly cloudy. High 46°, low 29°.
0Castalia, Saturday, 31 October
Clear. High 49°, low 31°.
0
Castalia, Sunday, 1 November
Overcast. High 46°, low 28°.
0Castalia, Monday, 2 November
Partly cloudy. High 47°, low 29°.
0Castalia, Tuesday, 3 November
Overcast. High 50°, low 34°.
0Castalia, Wednesday, 4 November
Overcast. High 56°, low 40°.
0.08Castalia, Thursday, 5 November
Climate normal for this date — 60-year average.
0.06Castalia, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Castalia, Saturday, 7 November
Climate normal for this date — 60-year average.
0.03Castalia, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11
Castalia, Monday, 9 November
Climate normal for this date — 60-year average.
0.1Castalia, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.09Castalia, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Castalia, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Castalia, Friday, 13 November
Climate normal for this date — 60-year average.
0.02Castalia, Saturday, 14 November
Climate normal for this date — 60-year average.
0.06Castalia, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Castalia, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Castalia, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Castalia, 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 Castalia, IA 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 Castalia, IA 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
43°Weather in Annapolis, MD52°Weather in Atlanta, GA54°Weather in Augusta, ME38°Weather in Austin, TX60°Weather in Baton Rouge, LA59°Weather in Bismarck, ND44°Weather in Boise, ID52°Weather in Boston, MA42°Weather in Carson City, NV54°Weather in Charleston, WV40°Weather in Charlotte Amalie, VI79°Weather in Cheyenne, WY45°Weather in Columbia, SC44°Weather in Columbus, OH43°Weather in Concord, NH40°Weather in Denver, CO51°Weather in Des Moines, IA46°Weather in Dover, DE46°Weather in Frankfort, KY44°Weather in Harrisburg, PA45°Weather in Hartford, CT42°Weather in Helena, MT42°Weather in Honolulu, HI73°Weather in Indianapolis, IN44°Weather in Jackson, MS49°Weather in Jefferson City, MO46°Weather in Juneau, AK37°Weather in Lansing, MI39°Weather in Lincoln, NE51°Weather in Little Rock, AR
52°Weather in Madison, WI42°Weather in Montgomery, AL48°Weather in Montpelier, VT35°Weather in Nashville, TN48°Weather in Oklahoma City, OK56°Weather in Olympia, WA43°Weather in Phoenix, AZ73°Weather in Pierre, SD46°Weather in Providence, RI44°Weather in Raleigh, NC45°Weather in Richmond, VA46°Weather in Sacramento, CA55°Weather in Salem, OR51°Weather in Salt Lake City, UT59°Weather in San Juan, PR76°Weather in Santa Fe, NM50°Weather in Springfield, IL43°Weather in St. Paul, MN48°Weather in Tallahassee, FL50°Weather in Topeka, KS49°Weather in Trenton, NJ48°Weather in Washington, DC52°44°Weather in New Albin, IA43°Weather in Lansing, IA43°Weather in Fort Atkinson, IA47°Weather in Jackson Junction, IA43°Weather in Granville, IA43°Weather in Matlock, IA43°Weather in Maurice, IA45°Weather in Ireton, IA43°Weather in Meservey, IA35°Weather in Garner, IA36°Weather in Goodell, IA44°Weather in Kanawha, IA44°Weather in Klemme, IA36°Weather in Emmetsburg, IA43°Weather in Graettinger, IA38°Weather in Everly, IA43°Weather in Fostoria, IA43°Weather in Gillett Grove, IA37°Weather in Greenville, IA37°