Avalon Weather Records (USC00230371)

Record envelope, standing records and threshold days for Avalon (USC00230371), Missouri, United States, with 30 years of record.

Key Facts for Avalon

Avalon (USC00230371) is a weather station in Missouri, United States at 39.67 latitude and -93.50 longitude, 235 m (770 ft) above sea level.
The station reports from 1896 to 1925, 30 years of record.
1,464 records set at Avalon still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Missouri, United States, 39.67 latitude, -93.50 longitude.
Elevation: 235 m (770 ft).
Period of record: 1896 to 1925, 30 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Avalon. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Avalon, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	22.2 C (72.0 F)	-31.7 C (-25.1 F)	n/a	n/a
Feb	22.8 C (73.0 F)	-32.8 C (-27.0 F)	n/a	n/a
Mar	32.8 C (91.0 F)	-22.2 C (-8.0 F)	n/a	n/a
Apr	33.9 C (93.0 F)	-12.2 C (10.0 F)	n/a	n/a
May	34.4 C (93.9 F)	-5.6 C (21.9 F)	n/a	n/a
Jun	40.0 C (104.0 F)	4.4 C (39.9 F)	n/a	n/a
Jul	43.9 C (111.0 F)	9.4 C (48.9 F)	n/a	n/a
Aug	43.9 C (111.0 F)	6.7 C (44.1 F)	n/a	n/a
Sep	41.7 C (107.1 F)	-1.7 C (28.9 F)	n/a	n/a
Oct	35.6 C (96.1 F)	-13.3 C (8.1 F)	n/a	n/a
Nov	27.8 C (82.0 F)	-17.8 C (0.0 F)	n/a	n/a
Dec	20.0 C (68.0 F)	-29.4 C (-20.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Avalon still stand. 1901 holds the most, with 85.

Standing records at Avalon by the year they were set
Year set	Standing records
1896	27
1897	48
1898	42
1899	61
1900	36
1901	85
1902	47
1903	42
1904	35
1905	36
1906	52
1907	44
1908	45
1909	46
1910	60
1911	62
1912	59
1913	72
1914	50
1915	72
1916	41
1917	70
1918	76
1919	31
1920	29
1921	35
1922	29
1923	38
1924	51
1925	43

Wettest Day of Each Month

Sep: 165.4 mm (6.5 in)

The wettest day on record for each calendar month at Avalon. The most was 165.4 mm (6.5 in) on 9 September 1903.

Record daily precipitation for each month at Avalon
Month	Record daily precipitation (mm)	Date
Jan	76.2 mm (3.0 in)	20 January 1916
Feb	41.9 mm (1.6 in)	18 February 1909
Mar	114.3 mm (4.5 in)	24 March 1920
Apr	57.7 mm (2.3 in)	30 April 1911
May	92.7 mm (3.6 in)	26 May 1915
Jun	99.1 mm (3.9 in)	26 June 1898
Jul	115.8 mm (4.6 in)	12 July 1915
Aug	73.7 mm (2.9 in)	9 August 1923
Sep	165.4 mm (6.5 in)	9 September 1903
Oct	105.9 mm (4.2 in)	1 October 1911
Nov	45.7 mm (1.8 in)	7 November 1918
Dec	48.0 mm (1.9 in)	24 December 1918

Period of Record Coverage

1896 to 1925

30 years of record at Avalon, 1896 to 1925. 3 years have data for under 90 percent of days and are left out of rankings: 1896, 1897, 1898.

Days with data per year at Avalon
Year	Days with data	Share of year	Complete
1896	95	26%	No
1897	286	78%	No
1898	321	88%	No
1899	361	99%	Yes
1900	360	99%	Yes
1901	352	96%	Yes
1902	350	96%	Yes
1903	334	92%	Yes
1904	352	96%	Yes
1905	364	100%	Yes
1906	364	100%	Yes
1907	359	98%	Yes
1908	361	99%	Yes
1909	363	99%	Yes
1910	362	99%	Yes
1911	362	99%	Yes
1912	362	99%	Yes
1913	362	99%	Yes
1914	360	99%	Yes
1915	364	100%	Yes
1916	336	92%	Yes
1917	360	99%	Yes
1918	357	98%	Yes
1919	356	98%	Yes
1920	361	99%	Yes
1921	361	99%	Yes
1922	362	99%	Yes
1923	351	96%	Yes
1924	364	99%	Yes
1925	361	99%	Yes

Latest Records

No records were set at this station in the latest data.

Climate Trend

25 complete years, 1899 to 1925

One stripe for each of 25 complete years at Avalon, 1899 to 1925. Blue stripes are years cooler than the station's own mean of 12.3 C (54.1 F); red stripes are warmer. The coolest year was 1904, at 10.8 C (51.4 F), and the warmest was 1921, at 14.0 C (57.2 F). The strongest colour marks a difference of 1.8 C (3.2 F).

Annual mean temperature at Avalon as warming stripes, 1899 to 1925
Year	Annual mean temperature	Difference from the station mean
1899	11.2 C	-1.03 C
1900	12.4 C	+0.14 C
1901	12.9 C	+0.64 C
1902	11.9 C	-0.40 C
1904	10.8 C	-1.48 C
1905	11.1 C	-1.19 C
1906	11.9 C	-0.36 C
1907	12.1 C	-0.15 C
1908	12.9 C	+0.59 C
1909	11.7 C	-0.53 C
1910	12.0 C	-0.23 C
1911	12.9 C	+0.60 C
1912	10.9 C	-1.37 C
1913	12.7 C	+0.41 C
1914	13.0 C	+0.77 C
1915	12.6 C	+0.30 C
1917	11.9 C	-0.39 C
1918	13.5 C	+1.26 C
1919	12.7 C	+0.48 C
1920	12.5 C	+0.23 C
1921	14.0 C	+1.74 C
1922	13.2 C	+0.90 C
1923	12.6 C	+0.37 C
1924	11.1 C	-1.12 C
1925	12.0 C	-0.22 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1896 to 1925

Yearly extremes at Avalon: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.9 C (111.0 F)	1901	37.8 C (100.0 F)	30
Coldest night (TNn)	-32.8 C (-27.0 F)	1899	-23.3 C (-9.9 F)	30
Wettest day (Rx1day)	165.4 mm (6.5 in)	1903	64.8 mm (2.5 in)	30
Wettest five days (Rx5day)	253.4 mm (10.0 in)	1905	110.6 mm (4.4 in)	30
Longest dry spell (CDD)	43 days	1918	24 days	30

Hottest day (TXx)

The hottest day of the year at Avalon, 1896 to 1925. The record is 43.9 C (111.0 F) in 1901, marked on the chart; the median year is 37.8 C (100.0 F).

Hottest day (TXx) at Avalon by year
Year	Hottest day (TXx)
1896	26.7 C (80.1 F)
1897	37.2 C (99.0 F)
1898	35.0 C (95.0 F)
1899	36.7 C (98.1 F)
1900	38.3 C (100.9 F)
1901	43.9 C (111.0 F)
1902	37.2 C (99.0 F)
1903	38.3 C (100.9 F)
1904	35.0 C (95.0 F)
1905	36.1 C (97.0 F)
1906	37.8 C (100.0 F)
1907	36.7 C (98.1 F)
1908	36.7 C (98.1 F)
1909	37.8 C (100.0 F)
1910	38.3 C (100.9 F)
1911	42.8 C (109.0 F)
1912	38.9 C (102.0 F)
1913	41.7 C (107.1 F)
1914	40.6 C (105.1 F)
1915	33.9 C (93.0 F)
1916	40.0 C (104.0 F)
1917	38.9 C (102.0 F)
1918	43.9 C (111.0 F)
1919	39.4 C (102.9 F)
1920	38.3 C (100.9 F)
1921	37.8 C (100.0 F)
1922	37.8 C (100.0 F)
1923	36.1 C (97.0 F)
1924	35.6 C (96.1 F)
1925	38.9 C (102.0 F)

Coldest night (TNn)

The coldest night of the year at Avalon, 1896 to 1925. The record is -32.8 C (-27.0 F) in 1899, marked on the chart; the median year is -23.3 C (-9.9 F).

Coldest night (TNn) at Avalon by year
Year	Coldest night (TNn)
1896	-17.8 C (0.0 F)
1897	-23.3 C (-9.9 F)
1898	-22.2 C (-8.0 F)
1899	-32.8 C (-27.0 F)
1900	-21.1 C (-6.0 F)
1901	-29.4 C (-20.9 F)
1902	-25.0 C (-13.0 F)
1903	-26.1 C (-15.0 F)
1904	-27.8 C (-18.0 F)
1905	-32.8 C (-27.0 F)
1906	-20.6 C (-5.1 F)
1907	-22.8 C (-9.0 F)
1908	-17.8 C (0.0 F)
1909	-23.3 C (-9.9 F)
1910	-23.3 C (-9.9 F)
1911	-23.3 C (-9.9 F)
1912	-31.7 C (-25.1 F)
1913	-22.2 C (-8.0 F)
1914	-23.9 C (-11.0 F)
1915	-27.8 C (-18.0 F)
1916	-25.0 C (-13.0 F)
1917	-26.1 C (-15.0 F)
1918	-30.0 C (-22.0 F)
1919	-24.4 C (-11.9 F)
1920	-17.8 C (0.0 F)
1921	-16.1 C (3.0 F)
1922	-18.3 C (-0.9 F)
1923	-18.9 C (-2.0 F)
1924	-28.9 C (-20.0 F)
1925	-21.1 C (-6.0 F)

Wettest day (Rx1day)

The wettest day of the year at Avalon, 1896 to 1925. The record is 165.4 mm (6.5 in) in 1903, marked on the chart; the median year is 64.8 mm (2.5 in).

Wettest day (Rx1day) at Avalon by year
Year	Wettest day (Rx1day)
1896	46.2 mm (1.8 in)
1897	63.5 mm (2.5 in)
1898	99.1 mm (3.9 in)
1899	49.8 mm (2.0 in)
1900	79.0 mm (3.1 in)
1901	30.5 mm (1.2 in)
1902	76.2 mm (3.0 in)
1903	165.4 mm (6.5 in)
1904	66.0 mm (2.6 in)
1905	83.3 mm (3.3 in)
1906	35.6 mm (1.4 in)
1907	71.1 mm (2.8 in)
1908	50.8 mm (2.0 in)
1909	63.5 mm (2.5 in)
1910	76.2 mm (3.0 in)
1911	105.9 mm (4.2 in)
1912	58.4 mm (2.3 in)
1913	50.8 mm (2.0 in)
1914	77.5 mm (3.1 in)
1915	115.8 mm (4.6 in)
1916	86.4 mm (3.4 in)
1917	45.7 mm (1.8 in)
1918	48.3 mm (1.9 in)
1919	58.4 mm (2.3 in)
1920	114.3 mm (4.5 in)
1921	127.0 mm (5.0 in)
1922	57.2 mm (2.3 in)
1923	88.9 mm (3.5 in)
1924	48.3 mm (1.9 in)
1925	63.5 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Avalon, 1896 to 1925. The record is 253.4 mm (10.0 in) in 1905, marked on the chart; the median year is 110.6 mm (4.4 in).

Wettest five days (Rx5day) at Avalon by year
Year	Wettest five days (Rx5day)
1896	46.2 mm (1.8 in)
1897	108.0 mm (4.3 in)
1898	104.4 mm (4.1 in)
1899	68.8 mm (2.7 in)
1900	130.8 mm (5.1 in)
1901	35.0 mm (1.4 in)
1902	113.8 mm (4.5 in)
1903	184.7 mm (7.3 in)
1904	100.9 mm (4.0 in)
1905	253.4 mm (10.0 in)
1906	66.4 mm (2.6 in)
1907	118.4 mm (4.7 in)
1908	100.5 mm (4.0 in)
1909	113.1 mm (4.5 in)
1910	83.3 mm (3.3 in)
1911	128.0 mm (5.0 in)
1912	63.5 mm (2.5 in)
1913	64.8 mm (2.6 in)
1914	163.9 mm (6.5 in)
1915	208.8 mm (8.2 in)
1916	125.8 mm (5.0 in)
1917	119.4 mm (4.7 in)
1918	101.6 mm (4.0 in)
1919	98.6 mm (3.9 in)
1920	158.8 mm (6.3 in)
1921	165.1 mm (6.5 in)
1922	120.8 mm (4.8 in)
1923	153.7 mm (6.1 in)
1924	78.8 mm (3.1 in)
1925	105.4 mm (4.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Avalon, 1896 to 1925. The record is 43 days in 1918, marked on the chart; the median year is 24 days.

Longest dry spell (CDD) at Avalon by year
Year	Longest dry spell (CDD)
1896	25 days
1897	32 days
1898	18 days
1899	20 days
1900	18 days
1901	20 days
1902	21 days
1903	16 days
1904	39 days
1905	21 days
1906	37 days
1907	18 days
1908	34 days
1909	27 days
1910	31 days
1911	18 days
1912	28 days
1913	20 days
1914	23 days
1915	35 days
1916	27 days
1917	27 days
1918	43 days
1919	20 days
1920	27 days
1921	18 days
1922	26 days
1923	28 days
1924	20 days
1925	19 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

25 years with a frost

Across 25 years with a frost, the median last spring frost at Avalon falls on 17 April and the median first autumn frost on 12 October, which leaves a median of 185 days between them.

Fitted over all years, the growing season changes by +6.1 days per decade at this station.

Frost dates and growing season at Avalon
Measure	Median, all years	Earliest period	Recent period (1899 to 1925)	Recent against earliest	Fitted trend
Last spring frost	17 April	n/a	17 April	n/a	-1.6 days per decade
First autumn frost	12 October	n/a	12 October	n/a	+4.5 days per decade
Growing days	185 days	n/a	185 days	n/a	+6.1 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Download the Data

Data for Avalon standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Avalon threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).