Ulithi Weather Records (FMC00914185)

Record envelope, standing records and threshold days for Ulithi (FMC00914185), FM, Federated States of Micronesia, with 36 years of record.

Key Facts for Ulithi

Ulithi (FMC00914185) is a weather station in FM, Federated States of Micronesia at 10.03 latitude and 139.80 longitude, 2 m (6 ft) above sea level.
The station reports from 1954 to 1989, 36 years of record.
1,464 records set at Ulithi still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: FM, Federated States of Micronesia, 10.03 latitude, 139.80 longitude.
Elevation: 2 m (6 ft).
Period of record: 1954 to 1989, 36 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 Ulithi. 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 Ulithi, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	33.3 C (91.9 F)	17.2 C (63.0 F)	n/a	n/a
Feb	35.6 C (96.1 F)	17.8 C (64.0 F)	n/a	n/a
Mar	35.0 C (95.0 F)	15.0 C (59.0 F)	n/a	n/a
Apr	36.7 C (98.1 F)	18.9 C (66.0 F)	n/a	n/a
May	36.7 C (98.1 F)	20.6 C (69.1 F)	n/a	n/a
Jun	34.4 C (93.9 F)	15.6 C (60.1 F)	n/a	n/a
Jul	33.9 C (93.0 F)	17.2 C (63.0 F)	n/a	n/a
Aug	33.3 C (91.9 F)	17.2 C (63.0 F)	n/a	n/a
Sep	36.1 C (97.0 F)	17.2 C (63.0 F)	n/a	n/a
Oct	34.4 C (93.9 F)	17.2 C (63.0 F)	n/a	n/a
Nov	35.6 C (96.1 F)	15.6 C (60.1 F)	n/a	n/a
Dec	35.0 C (95.0 F)	18.9 C (66.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Ulithi still stand. 1963 holds the most, with 244.

Standing records at Ulithi by the year they were set
Year set	Standing records
1954	40
1955	23
1956	17
1957	32
1958	36
1959	40
1961	33
1962	69
1963	244
1964	54
1965	155
1966	84
1967	21
1968	70
1969	37
1970	40
1971	33
1972	32
1973	37
1974	20
1975	36
1976	21
1977	25
1986	47
1987	39
1988	122
1989	57

Wettest Day of Each Month

Sep: 276.9 mm (10.9 in)

The wettest day on record for each calendar month at Ulithi. The most was 276.9 mm (10.9 in) on 10 September 1963.

Record daily precipitation for each month at Ulithi
Month	Record daily precipitation (mm)	Date
Jan	93.2 mm (3.7 in)	11 January 1987
Feb	228.6 mm (9.0 in)	3 February 1963
Mar	85.6 mm (3.4 in)	2 March 1972
Apr	131.3 mm (5.2 in)	16 April 1962
May	236.2 mm (9.3 in)	16 May 1963
Jun	137.2 mm (5.4 in)	27 June 1963
Jul	266.7 mm (10.5 in)	15 July 1963
Aug	175.3 mm (6.9 in)	27 August 1963
Sep	276.9 mm (10.9 in)	10 September 1963
Oct	210.8 mm (8.3 in)	1 October 1963
Nov	175.5 mm (6.9 in)	27 November 1972
Dec	264.2 mm (10.4 in)	7 December 1962

Period of Record Coverage

1954 to 1989

27 years of record at Ulithi, 1954 to 1989. 20 years have data for under 90 percent of days and are left out of rankings: 1954, 1956, 1957, 1958, 1959, 1961, 1962, 1963 and others.

Days with data per year at Ulithi
Year	Days with data	Share of year	Complete
1954	213	58%	No
1955	361	99%	Yes
1956	258	70%	No
1957	125	34%	No
1958	326	89%	No
1959	300	82%	No
1961	213	58%	No
1962	219	60%	No
1963	289	79%	No
1964	302	83%	No
1965	190	52%	No
1966	295	81%	No
1967	343	94%	Yes
1968	326	89%	No
1969	334	92%	Yes
1970	362	99%	Yes
1971	363	99%	Yes
1972	365	100%	Yes
1973	320	88%	No
1974	117	32%	No
1975	269	74%	No
1976	182	50%	No
1977	212	58%	No
1986	256	70%	No
1987	317	87%	No
1988	360	98%	Yes
1989	209	57%	No

Latest Records

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

Extremes by Year

1954 to 1989

Yearly extremes at Ulithi: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.7 C (98.1 F)	1963	33.3 C (91.9 F)	27
Coldest night (TNn)	15.0 C (59.0 F)	1966	20.0 C (68.0 F)	27
Wettest day (Rx1day)	276.9 mm (10.9 in)	1963	105.7 mm (4.2 in)	28
Wettest five days (Rx5day)	675.6 mm (26.6 in)	1963	196.1 mm (7.7 in)	28
Longest dry spell (CDD)	17 days	1966	9 days	28

Hottest day (TXx)

The hottest day of the year at Ulithi, 1954 to 1989. The record is 36.7 C (98.1 F) in 1963, marked on the chart; the median year is 33.3 C (91.9 F).

Hottest day (TXx) at Ulithi by year
Year	Hottest day (TXx)
1954	33.9 C (93.0 F)
1955	32.8 C (91.0 F)
1956	32.8 C (91.0 F)
1957	32.8 C (91.0 F)
1958	35.6 C (96.1 F)
1959	34.4 C (93.9 F)
1960	n/a
1961	33.3 C (91.9 F)
1962	35.0 C (95.0 F)
1963	36.7 C (98.1 F)
1964	36.1 C (97.0 F)
1965	32.8 C (91.0 F)
1966	33.3 C (91.9 F)
1967	32.8 C (91.0 F)
1968	31.7 C (89.1 F)
1969	32.2 C (90.0 F)
1970	33.3 C (91.9 F)
1971	33.3 C (91.9 F)
1972	32.2 C (90.0 F)
1973	32.2 C (90.0 F)
1974	31.1 C (88.0 F)
1975	31.7 C (89.1 F)
1976	31.7 C (89.1 F)
1977	35.6 C (96.1 F)
1986	36.1 C (97.0 F)
1987	33.3 C (91.9 F)
1988	33.3 C (91.9 F)
1989	33.9 C (93.0 F)

Coldest night (TNn)

The coldest night of the year at Ulithi, 1954 to 1989. The record is 15.0 C (59.0 F) in 1966, marked on the chart; the median year is 20.0 C (68.0 F).

Coldest night (TNn) at Ulithi by year
Year	Coldest night (TNn)
1954	17.2 C (63.0 F)
1955	21.1 C (70.0 F)
1956	22.2 C (72.0 F)
1957	22.8 C (73.0 F)
1958	20.6 C (69.1 F)
1959	17.8 C (64.0 F)
1960	n/a
1961	20.6 C (69.1 F)
1962	20.0 C (68.0 F)
1963	20.0 C (68.0 F)
1964	18.9 C (66.0 F)
1965	15.6 C (60.1 F)
1966	15.0 C (59.0 F)
1967	21.1 C (70.0 F)
1968	17.2 C (63.0 F)
1969	15.6 C (60.1 F)
1970	19.4 C (66.9 F)
1971	19.4 C (66.9 F)
1972	20.6 C (69.1 F)
1973	20.6 C (69.1 F)
1974	20.0 C (68.0 F)
1975	20.0 C (68.0 F)
1976	22.2 C (72.0 F)
1977	21.1 C (70.0 F)
1986	20.6 C (69.1 F)
1987	20.0 C (68.0 F)
1988	20.6 C (69.1 F)
1989	21.1 C (70.0 F)

Wettest day (Rx1day)

The wettest day of the year at Ulithi, 1954 to 1989. The record is 276.9 mm (10.9 in) in 1963, marked on the chart; the median year is 105.7 mm (4.2 in).

Wettest day (Rx1day) at Ulithi by year
Year	Wettest day (Rx1day)
1954	105.7 mm (4.2 in)
1955	109.0 mm (4.3 in)
1956	109.2 mm (4.3 in)
1957	75.7 mm (3.0 in)
1958	100.3 mm (3.9 in)
1959	213.4 mm (8.4 in)
1960	197.6 mm (7.8 in)
1961	141.7 mm (5.6 in)
1962	264.2 mm (10.4 in)
1963	276.9 mm (10.9 in)
1964	50.3 mm (2.0 in)
1965	71.1 mm (2.8 in)
1966	48.5 mm (1.9 in)
1967	96.3 mm (3.8 in)
1968	142.5 mm (5.6 in)
1969	193.0 mm (7.6 in)
1970	105.7 mm (4.2 in)
1971	124.2 mm (4.9 in)
1972	175.5 mm (6.9 in)
1973	66.5 mm (2.6 in)
1974	69.1 mm (2.7 in)
1975	85.1 mm (3.4 in)
1976	84.8 mm (3.3 in)
1977	40.6 mm (1.6 in)
1986	160.5 mm (6.3 in)
1987	110.5 mm (4.4 in)
1988	78.2 mm (3.1 in)
1989	84.3 mm (3.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Ulithi, 1954 to 1989. The record is 675.6 mm (26.6 in) in 1963, marked on the chart; the median year is 196.1 mm (7.7 in).

Wettest five days (Rx5day) at Ulithi by year
Year	Wettest five days (Rx5day)
1954	204.7 mm (8.1 in)
1955	218.8 mm (8.6 in)
1956	209.5 mm (8.2 in)
1957	167.6 mm (6.6 in)
1958	179.8 mm (7.1 in)
1959	270.6 mm (10.7 in)
1960	292.9 mm (11.5 in)
1961	330.9 mm (13.0 in)
1962	467.3 mm (18.4 in)
1963	675.6 mm (26.6 in)
1964	104.9 mm (4.1 in)
1965	195.3 mm (7.7 in)
1966	91.4 mm (3.6 in)
1967	182.6 mm (7.2 in)
1968	177.6 mm (7.0 in)
1969	286.7 mm (11.3 in)
1970	234.9 mm (9.2 in)
1971	261.8 mm (10.3 in)
1972	227.4 mm (9.0 in)
1973	133.8 mm (5.3 in)
1974	177.3 mm (7.0 in)
1975	180.5 mm (7.1 in)
1976	103.4 mm (4.1 in)
1977	82.5 mm (3.2 in)
1986	233.7 mm (9.2 in)
1987	196.8 mm (7.7 in)
1988	140.7 mm (5.5 in)
1989	160.8 mm (6.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Ulithi, 1954 to 1989. The record is 17 days in 1966, marked on the chart; the median year is 9 days.

Longest dry spell (CDD) at Ulithi by year
Year	Longest dry spell (CDD)
1954	7 days
1955	8 days
1956	10 days
1957	12 days
1958	12 days
1959	8 days
1960	8 days
1961	8 days
1962	7 days
1963	9 days
1964	7 days
1965	9 days
1966	17 days
1967	9 days
1968	16 days
1969	9 days
1970	12 days
1971	8 days
1972	12 days
1973	15 days
1974	4 days
1975	8 days
1976	9 days
1977	7 days
1986	10 days
1987	10 days
1988	10 days
1989	12 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.

Download the Data

Data for Ulithi standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Ulithi 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 2026-10-13 (13 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).