FORECAST CITY
Sign in
Shaded-relief map of Trafalgar, Indiana: rivers, roads, the city limits and where the water drains.
INDIANA · JOHNSON COUNTY

Trafalgar

1,607 people, 840 ft above sea level in Johnson County.

840 ftElevation, city center
1,607People, 2024 estimate
3 sq miLand area
Clear 41°
Clear now Dew point 28° · NW 5 mph · high 41°
City of Trafalgar River Interstate 2 miles
Explore the plate Order a print

The Trafalgar plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Trafalgar

NWS forecast and National Blend of Models · updated 6:00 PM EST
RIGHT NOW Columbus / Bakalar (KBAK) · 5:45 PM
Clear
41° Clear Feels like 38° · high of 41° near 6 PM
WindNW 5 mphno gusts
Humidity61%rising to 100% by morning
Pressure30.24 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 28° · Dry40° by Tuesday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Clear
Not this weeknone in the forecast for a week
LIKELY AMOUNT—nothing expected
LAST RAINNov. 120.47 in · 2 dry days
ALERTS & OUTLOOKS
No watches or warnings for Johnson County
NWS Indianapolis and the Storm Prediction Center · checked 6:46 PM
SUN & MOON
↑ 7:27 AM5:30 PM ↓
10 h 3 m of daylight, 2 minutes less than yesterday
Waxing crescent, 26% lit. Next full moon: Nov. 24.
AIR & POLLEN
10
GOODAir quality index · fine particles
No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
SATURDAY, NOV. 14
SUNDAY, NOV. 15
MONDAY, NOV. 16
TUESDAY, NOV. 17
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
mostly clear night
mostly cloudy night
partly cloudy night
mostly clear night
partly cloudy day
partly cloudy day
partly cloudy day
partly cloudy day
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy day
mostly sunny
mostly sunny
clear day
clear night
clear night
mostly clear night
mostly clear night
mostly sunny
clear day
clear day
clear day
TEMPERATURE °F
41°
31°
50°
30°
51°
30°
CHANCE OF RAIN
50%
WIND, MPH
3
2
1
1
1
1
3
3
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
HOW IT FEELS · DEW POINT
Dry: dew points 30 to 39° ↑ Humid air returns More humid: 38° by Tuesday

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 80° / 62°
SAT Nov. 14 Partly cloudy Partly cloudy
41° 31°
0% rain — WNW 2 A
SUN Nov. 15 Partly cloudy; warmer Partly cloudy; warmer
52° 30°
0% rain — N 2 B
MON Nov. 16 Mostly sunny Mostly sunny
55° 30°
0% rain — ENE 0 A
TUE Nov. 17 Sunny Sunny
58° 32°
0% rain — SSE 1 A
WED Nov. 18 Mostly sunny Mostly sunny
61° 37°
0% rain — SSE 3 A
THU Nov. 19 Mostly sunny Mostly sunny
64° 44°
0% rain — SSW 3 B
FRI Nov. 20 Mostly sunny Mostly sunny
67° 44°
0% rain — SE 2 B
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

The air arriving over Trafalgar about 5,000 feet above the ground was over the Canadian Prairies three days ago, and over the northern Plains a day ago, about 1,740 miles back along its path. It rose from near the ground on the way. Near the ground the air came from British Columbia; at 10,000 feet, from the Canadian Prairies. It has stayed over land, which is why it feels dry. Traced back 72 hours through NOAA’s hourly RAP analyses, nine paths at each of three heights.

THIS WEEK, SEVEN YEARS AGO Nov. 13, 2019

The coldest this week has been

4° on Nov. 13, 2019, the coldest reading for this week of the year since 1922. Next is 5° in 1959.

5°
4°
19592019
Source: NOAA RCC-ACIS, the Martinsville 2 SW record since 1922.
MILE2
THE GROUND

What Trafalgar stands on

Trafalgar’s center stands about 840 ft above sea level. Within three miles the land runs from 750 ft to 920 ft, a difference of 170 ft: gently rolling country. The highest named summit within 15 miles is Bearwallow Hill, about 1,070 ft, 12 miles south-southwest.

Under the town center the state geologic map shows Borden Group (siltstone), from the Carboniferous, 324 to 359 million years old.

The section below crosses 2 rock units mapped at the surface.

Trafalgar, cut in half from south to north

A section south to north, 24 miles through the town center
700 ft800 ft900 ft1,000 ft TRAFALGAR840 ftNorth Fork Salt Creekabout 650 ftZion Hill890 ftHigh point of the line1,030 ft ← SGreenwood · N →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 50×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.

Rock at the surface along the line

Borden Group

Siltstone. Age: Carboniferous, 324 to 359 million years old. About 23 mi of the line.

New Albany Shale

Black-shale. Age: Devonian to Carboniferous, 324 to 422 million years old. About 1 mi of the line.

From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.

Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.

MILE3
THE WATER

Where Trafalgar’s rain goes

A raindrop that lands in Trafalgar reaches the Gulf of America by way of South Prong Stotts Creek, Stotts Creek, the White River, Big Bayou, the Wabash River Old Channel, the Old Channel Wabash, the Ohio and the Mississippi: about 1,400 river miles.

THE WAY DOWN, TO SCALE
Trafalgar≈ 1,400 mi · the Gulf of America
FROM THE CENTER OF TRAFALGAR ≈ 1,400 mi to the Gulf of America South Prong Stotts Creek → Stotts Creek → … → Old Channel Wabash → Ohio → Mississippi

970 miles of the trip are on the Mississippi.

Traced down the USGS NHDPlus V2.1 river network from the Census center point of Trafalgar; river miles along the main stem, rounded.

MILE5
THE ALMANAC

Trafalgar’s year

1991–2020 normals · records since 1922 · Martinsville 2 SW, 16 mi west

Trafalgar has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 19° in January. A normal year brings about 17 inches of snow; with the rain, that comes to about 46 inches of water.

36°19°41°21°51°29°63°40°73°50°81°60°84°63°83°61°78°53°66°41°52°32°41°24° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 TODAY TRAFALGAR 45.5 in rain and snowmelt
Normal high to low, by month Record high to low, by day Rain by month Freezing
July, average84° / 63°high / low, the warmest month
January, average36° / 19°high / low, the coldest month
Rain and melted snow45.5 inwettest months: June and May
Snow a year16.7 insnowiest: January
Hottest on record105°FJuly 19, 1954
Coldest on record−35°FJanuary 19, 1994
Wettest day on record8.02 inJune 7, 2008
Snowiest day on record10.0 inMarch 20, 1996
90° days a year12very few reach 100°
Nights at or below 32°128and 29 days that stay below freezing
Climate typeHot-summer humid continentalKöppen Dfa

AROUND THE RING

1Freeze seasonfrom the first fall freeze, about Oct. 14, to the last in spring, about April 25 (median dates)
2Lows below freezingNov. 12 to March 27; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Trafalgar normally reaches 53° and falls to 32°. The record high is 78°, in 1955; the record low 4°, in 2019. The most rain on this date, 3.40 in, fell in 1993.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high36°41°51°63°73°81°84°83°78°66°52°41°
Normal low19°21°29°40°50°60°63°61°53°41°32°24°
Rain and melt, in3.162.433.554.834.975.314.083.443.523.473.613.12
Snow, inches6.33.82.10.10.00.00.00.00.00.10.43.9
Record high70° (1960)75° (2024)88° (2026)88° (1989)94° (1956)104° (1954)105° (1954)100° (1988)103° (1954)92° (1954)81° (1999)75° (1982)
Record low−35° (1994)−20° (1982)−15° (1980)12° (1982)26° (2020)35° (1992)42° (1960)38° (1986)28° (1995)15° (1952)−2° (1958)−22° (1989)

Normals 1991–2020 and records since 1922 at Martinsville 2 SW, 16 miles west, 250 ft lower. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Trafalgar on the Forecast Network

Neighboring plates

Indianapolis IN · 25 MI 25 miles north Fishers IN · 39 MI 39 miles north Louisville KY · 90 MI 90 miles south Lexington-Fayette urban county KY · 132 MI 132 miles southeast Columbus OH · 173 MI 173 miles east Chicago IL · 186 MI 186 miles northwest
FORECASTCITY
Map of Trafalgar, Indiana. Explore the plate
INDIANA · JOHNSON

Trafalgar

1,607 people, 840 ft above sea level in Johnson County.

840 ftElevation
1,607People
3 sq miLand
Clear 41°
ClearDew point 28°
1

Today in Trafalgar

NEXT 15 HOURS
Now mostly clear night 41° 0%
9p partly cloudy night 37° 0%
12a partly cloudy night 34° 0%
3a mostly clear night 32° 0%
6a partly cloudy night 31° 0%
9a partly cloudy day 37° 0%
Clear
NEXT RAINNone this week
→
Sat0%
Partly cloudy Partly cloudy
31
41
A
Sun0%
Partly cloudy; warmer Partly cloudy; warmer
30
52
B
Mon0%
Mostly sunny Mostly sunny
30
55
A
Tue0%
Sunny Sunny
32
58
A
Wed0%
Mostly sunny Mostly sunny
37
61
A
Thu0%
Mostly sunny Mostly sunny
44
64
B
Fri0%
Mostly sunny Mostly sunny
44
67
B
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK, SEVEN YEARS AGO · NOV. 13, 2019

4°, the coldest this week of the year has been since 1922.

2

What Trafalgar stands on

Trafalgar’s center stands about 840 ft above sea level. Within three miles the land runs from 750 ft to 920 ft, a difference of 170 ft: gently rolling country. The highest named summit within 15 miles is Bearwallow Hill, about 1,070 ft, 12 miles south-southwest.

Trafalgar, south to north Trafalgar840 ftNorth Fork Salt Creekabout 650 ftZion Hill890 ft ← SN → 24 miles through the town center; vertical exaggeration about 96×. Colors: rock at the surface.
Elevation, center840 ft
Within 3 miles750 to 920 ft
Lie of the landGently rolling (170 ft of relief)
High point nearbyBearwallow Hill, 1,070 ft, 12 mi south-southwest
Rock at the surfaceBorden Group
Its ageCarboniferous, 324 to 359 million years old
5

Trafalgar’s year

Trafalgar has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 19° in January. A normal year brings about 17 inches of snow; with the rain, that comes to about 46 inches of water.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 45.5 in
July, average84° / 63° · high / low, the warmest month
January, average36° / 19° · high / low, the coldest month
Rain and melted snow45.5 in · wettest months: June and May
Snow a year16.7 in · snowiest: January
Hottest on record105°F · July 19, 1954
Coldest on record−35°F · January 19, 1994
Wettest day on record8.02 in · June 7, 2008
Snowiest day on record10.0 in · March 20, 1996
90° days a year12 · very few reach 100°
Nights at or below 32°128 · and 29 days that stay below freezing
Climate typeHot-summer humid continental · Köppen Dfa
1Freeze season · from the first fall freeze, about Oct. 14, to the last in spring, about April 25 (median dates)
2Lows below freezing · Nov. 12 to March 27; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Trafalgar normally reaches 53° and falls to 32°. The record high is 78°, in 1955; the record low 4°, in 2019. The most rain on this date, 3.40 in, fell in 1993.

Normals 1991–2020 and records since 1922 at Martinsville 2 SW, 16 miles west, 250 ft lower. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 1,400 mito the Gulf of AmericaSouth Prong Stotts Creek → Stotts Creek → … → Old Channel Wabash → Ohio → Mississippi

A raindrop that lands in Trafalgar reaches the Gulf of America by way of South Prong Stotts Creek, Stotts Creek, the White River, Big Bayou, the Wabash River Old Channel, the Old Channel Wabash, the Ohio and the Mississippi: about 1,400 river miles.

970 miles of the trip are on the Mississippi.