Weather in Siam, TN
Siam, Sunday, 11 October, 05:00
Overcast. Feels like 67°. High 72°, low 63°.
Monthly outlook for Siam, TN: average high 66.5°, average low 46.4°. That is 0.5° above the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 15 October (79.6°), the coolest 19 October (25.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 66.9° | 66.5° | +0.2° |
| 21 October – 30 October | 65.8° | 63.4° | +1.4° |
| 31 October – 9 November | at normal | 60.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Johnson City (13 mi).
0.03
Siam, Monday, 12 October
Light rain. High 75°, low 61°.
0
Siam, Tuesday, 13 October
Clear. High 78°, low 58°.
0Siam, Wednesday, 14 October
Clear. High 78°, low 60°.
0
Siam, Thursday, 15 October
Mostly clear. High 80°, low 61°.
0.16Siam, Friday, 16 October
Rain. High 77°, low 51°.
0.17
Siam, Saturday, 17 October
Snow. High 48°, low 34°.
0.15Siam, Sunday, 18 October
Light snow. High 43°, low 28°.
0
Siam, Monday, 19 October
Partly cloudy. High 55°, low 25°.
0Siam, Tuesday, 20 October
Clear. High 63°, low 35°.
0Siam, Wednesday, 21 October
Clear. High 71°, low 42°.
0Siam, Thursday, 22 October
Overcast. High 67°, low 45°.
0Siam, Friday, 23 October
Clear. High 69°, low 46°.
0Siam, Saturday, 24 October
Overcast. High 71°, low 49°.
0Siam, Sunday, 25 October
Overcast. High 61°, low 46°.
0Siam, Monday, 26 October
Clear. High 57°, low 39°.
0.15
Siam, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.13Siam, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.12Siam, Thursday, 29 October
Climate normal for this date — 60-year average.
0.13Siam, Friday, 30 October
Climate normal for this date — 60-year average.
0.08Siam, Saturday, 31 October
Climate normal for this date — 60-year average.
0.09Siam, Sunday, 1 November
Climate normal for this date — 60-year average.
0.15Siam, Monday, 2 November
Climate normal for this date — 60-year average.
0.08Siam, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.14Siam, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.13Siam, Thursday, 5 November
Climate normal for this date — 60-year average.
0.06Siam, Friday, 6 November
Climate normal for this date — 60-year average.
0.14Siam, Saturday, 7 November
Climate normal for this date — 60-year average.
0.1Siam, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Siam, Monday, 9 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 Siam, TN 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 Siam, TN 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
45°Weather in Annapolis, MD65°Weather in Atlanta, GA63°Weather in Augusta, ME
41°Weather in Austin, TX72°Weather in Baton Rouge, LA63°Weather in Bismarck, ND50°Weather in Boise, ID48°Weather in Boston, MA46°Weather in Carson City, NV50°Weather in Charleston, WV58°Weather in Charlotte Amalie, VI79°Weather in Cheyenne, WY60°Weather in Columbia, SC75°Weather in Columbus, OH57°Weather in Concord, NH40°Weather in Denver, CO66°Weather in Des Moines, IA66°Weather in Dover, DE65°Weather in Frankfort, KY
61°Weather in Harrisburg, PA56°Weather in Hartford, CT46°Weather in Helena, MT31°Weather in Honolulu, HI76°Weather in Indianapolis, IN59°Weather in Jackson, MS65°Weather in Jefferson City, MO55°Weather in Juneau, AK30°Weather in Lansing, MI54°Weather in Lincoln, NE70°Weather in Little Rock, AR62°Weather in Madison, WI57°Weather in Montgomery, AL60°Weather in Montpelier, VT35°Weather in Nashville, TN63°Weather in Oklahoma City, OK68°Weather in Olympia, WA41°Weather in Phoenix, AZ76°Weather in Pierre, SD57°Weather in Providence, RI47°Weather in Raleigh, NC70°Weather in Richmond, VA67°Weather in Sacramento, CA53°Weather in Salem, OR42°Weather in Salt Lake City, UT61°Weather in San Juan, PR77°Weather in Santa Fe, NM57°Weather in Springfield, IL55°Weather in St. Paul, MN71°Weather in Tallahassee, FL70°Weather in Topeka, KS67°Weather in Trenton, NJ58°Weather in Washington, DC62°60°Weather in Union Heights, TN62°Weather in Union Temple, TN62°Weather in Unity, TN61°Weather in Upper Shell Creek, TN62°Weather in Uptonville, TN61°Weather in Vale, TN62°Weather in Valley Creek, TN64°Weather in Valley Forge, TN64°Weather in Valley View Heights, TN64°Weather in Valleyview Subdivision, TN62°Weather in Van Buren, TN61°Weather in Vanntown, TN62°Weather in Vasper, TN65°Weather in Venable Spring, TN63°Weather in Verdun, TN60°Weather in Vernon Heights, TN63°Weather in Verona, TN63°Weather in Vesta, TN62°Weather in Vestal, TN64°