Muncy Valley Weather Records (USC00366098)
Record envelope, standing records and threshold days for Muncy Valley (USC00366098), Pennsylvania, United States, with 34 years of record.
Key Facts for Muncy Valley
- Muncy Valley (USC00366098) is a weather station in Pennsylvania, United States at 41.35 latitude and -76.59 longitude, 287 m (940 ft) above sea level.
- The station reports from 1909 to 1942, 34 years of record.
- 1,464 records set at Muncy Valley still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Muncy Valley set a daily record precipitation of 26.4 mm (1.0 in) on 17 March 1942.
About the Station
- Location: Pennsylvania, United States, 41.35 latitude, -76.59 longitude.
- Elevation: 287 m (940 ft).
- Period of record: 1909 to 1942, 34 years.
- Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 20.0 C (68.0 F) | -30.0 C (-22.0 F) | n/a | n/a |
| Feb | 18.3 C (64.9 F) | -30.6 C (-23.1 F) | n/a | n/a |
| Mar | 26.7 C (80.1 F) | -27.8 C (-18.0 F) | n/a | n/a |
| Apr | 33.3 C (91.9 F) | -17.2 C (1.0 F) | n/a | n/a |
| May | 34.4 C (93.9 F) | -7.8 C (18.0 F) | n/a | n/a |
| Jun | 36.7 C (98.1 F) | -3.3 C (26.1 F) | n/a | n/a |
| Jul | 38.3 C (100.9 F) | 3.3 C (37.9 F) | n/a | n/a |
| Aug | 39.4 C (102.9 F) | 1.1 C (34.0 F) | n/a | n/a |
| Sep | 36.7 C (98.1 F) | -3.3 C (26.1 F) | n/a | n/a |
| Oct | 32.2 C (90.0 F) | -9.4 C (15.1 F) | n/a | n/a |
| Nov | 24.4 C (75.9 F) | -20.0 C (-4.0 F) | n/a | n/a |
| Dec | 17.8 C (64.0 F) | -28.9 C (-20.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1909 | 9 |
| 1910 | 47 |
| 1911 | 39 |
| 1912 | 10 |
| 1913 | 11 |
| 1914 | 67 |
| 1915 | 44 |
| 1916 | 53 |
| 1917 | 60 |
| 1918 | 62 |
| 1919 | 54 |
| 1920 | 65 |
| 1921 | 47 |
| 1922 | 38 |
| 1923 | 47 |
| 1924 | 49 |
| 1925 | 56 |
| 1926 | 42 |
| 1927 | 35 |
| 1928 | 41 |
| 1929 | 76 |
| 1930 | 54 |
| 1931 | 41 |
| 1932 | 50 |
| 1933 | 55 |
| 1934 | 45 |
| 1935 | 37 |
| 1936 | 61 |
| 1937 | 22 |
| 1938 | 30 |
| 1939 | 21 |
| 1940 | 57 |
| 1941 | 30 |
| 1942 | 9 |
Wettest Day of Each Month
Nov: 118.9 mm (4.7 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 63.0 mm (2.5 in) | 12 January 1915 |
| Feb | 81.0 mm (3.2 in) | 14 February 1940 |
| Mar | 51.6 mm (2.0 in) | 6 March 1932 |
| Apr | 61.7 mm (2.4 in) | 24 April 1910 |
| May | 92.7 mm (3.6 in) | 3 May 1929 |
| Jun | 62.2 mm (2.4 in) | 7 June 1918 |
| Jul | 73.4 mm (2.9 in) | 16 July 1937 |
| Aug | 95.8 mm (3.8 in) | 31 August 1940 |
| Sep | 103.6 mm (4.1 in) | 30 September 1924 |
| Oct | 83.3 mm (3.3 in) | 6 October 1932 |
| Nov | 118.9 mm (4.7 in) | 16 November 1926 |
| Dec | 57.9 mm (2.3 in) | 14 December 1920 |
Period of Record Coverage
1909 to 1942| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1909 | 90 | 25% | No |
| 1910 | 361 | 99% | Yes |
| 1911 | 232 | 64% | No |
| 1912 | 30 | 8% | No |
| 1913 | 118 | 32% | No |
| 1914 | 364 | 100% | Yes |
| 1915 | 365 | 100% | Yes |
| 1916 | 365 | 100% | Yes |
| 1917 | 364 | 100% | Yes |
| 1918 | 361 | 99% | Yes |
| 1919 | 364 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 363 | 99% | Yes |
| 1922 | 365 | 100% | Yes |
| 1923 | 365 | 100% | Yes |
| 1924 | 357 | 98% | Yes |
| 1925 | 349 | 96% | Yes |
| 1926 | 329 | 90% | Yes |
| 1927 | 326 | 89% | No |
| 1928 | 359 | 98% | Yes |
| 1929 | 362 | 99% | Yes |
| 1930 | 362 | 99% | Yes |
| 1931 | 361 | 99% | Yes |
| 1932 | 362 | 99% | Yes |
| 1933 | 359 | 98% | Yes |
| 1934 | 361 | 99% | Yes |
| 1935 | 357 | 98% | Yes |
| 1936 | 362 | 99% | Yes |
| 1937 | 327 | 90% | No |
| 1938 | 349 | 96% | Yes |
| 1939 | 345 | 95% | Yes |
| 1940 | 350 | 96% | Yes |
| 1941 | 325 | 89% | No |
| 1942 | 83 | 23% | No |
Latest Records
17| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 17 March 1942 | Muncy Valley, US | daily rain | 26.4 mm (1.0 in) | 4.3 mm (0.17 in) | 5 years | 8 of 100 (Routine) |
| 9 March 1942 | Muncy Valley, US | daily rain | 48.5 mm (1.9 in) | 20.6 mm (0.8 in) | 23 years | 32 of 100 (Routine) |
| 8 March 1942 | Muncy Valley, US | daily high max | 17.8 C (64.0 F) | 2.2 C (4.0 F) | 20 years | 12 of 100 (Routine) |
| 8 March 1942 | Muncy Valley, US | daily high min (Tie) | 5.6 C (42.1 F) | tie | 20 years | 2 of 100 (Routine) |
| 6 March 1942 | Muncy Valley, US | daily high min | 2.2 C (36.0 F) | 0.5 C (0.9 F) | 3 years | 3 of 100 (Routine) |
| 3 March 1942 | Muncy Valley, US | daily rain | 27.9 mm (1.1 in) | 6.1 mm (0.24 in) | 8 years | 11 of 100 (Routine) |
| 16 February 1942 | Muncy Valley, US | daily high min | 0.0 C (32.0 F) | 0.6 C (1.1 F) | 27 years | 11 of 100 (Routine) |
| 7 February 1942 | Muncy Valley, US | daily rain | 25.7 mm (1.0 in) | 16.0 mm (0.6 in) | 12 years | 24 of 100 (Routine) |
| 5 February 1942 | Muncy Valley, US | daily rain | 16.0 mm (0.6 in) | 4.1 mm (0.16 in) | 22 years | 13 of 100 (Routine) |
| 11 January 1942 | Muncy Valley, US | daily low min | -18.9 C (-2.0 F) | 1.7 C (3.1 F) | 30 years | 14 of 100 (Routine) |
| 9 January 1942 | Muncy Valley, US | daily low min | -26.1 C (-15.0 F) | 5.0 C (9.0 F) | 15 years | 14 of 100 (Routine) |
| 8 January 1942 | Muncy Valley, US | monthly low min | -30.0 C (-22.0 F) | 0.6 C (1.1 F) | 23 years | 20 of 100 (Routine) |
| 8 January 1942 | Muncy Valley, US | daily low max | -12.2 C (10.0 F) | 7.8 C (14.0 F) | 2 years | 17 of 100 (Routine) |
| 7 January 1942 | Muncy Valley, US | daily low min | -21.7 C (-7.1 F) | 3.9 C (7.0 F) | 2 years | 8 of 100 (Routine) |
| 6 January 1942 | Muncy Valley, US | daily low min | -26.1 C (-15.0 F) | 5.5 C (9.9 F) | 22 years | 16 of 100 (Routine) |
| 4 January 1942 | Muncy Valley, US | daily rain | 16.8 mm (0.7 in) | 5.9 mm (0.23 in) | 28 years | 17 of 100 (Routine) |
| 2 January 1942 | Muncy Valley, US | daily rain | 28.2 mm (1.1 in) | 8.9 mm (0.35 in) | 12 years | 15 of 100 (Routine) |
Climate Trend
24 complete years, 1910 to 1939| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1910 | 9.0 C | +0.22 C |
| 1914 | 8.1 C | -0.65 C |
| 1915 | 8.8 C | +0.06 C |
| 1916 | 8.3 C | -0.45 C |
| 1917 | 7.5 C | -1.27 C |
| 1918 | 8.9 C | +0.16 C |
| 1919 | 9.5 C | +0.77 C |
| 1920 | 8.7 C | -0.12 C |
| 1921 | 10.4 C | +1.65 C |
| 1922 | 9.1 C | +0.29 C |
| 1923 | 8.6 C | -0.22 C |
| 1924 | 7.8 C | -0.95 C |
| 1925 | 8.6 C | -0.22 C |
| 1928 | 9.0 C | +0.21 C |
| 1929 | 9.1 C | +0.29 C |
| 1930 | 9.0 C | +0.21 C |
| 1931 | 9.8 C | +1.00 C |
| 1932 | 9.1 C | +0.33 C |
| 1933 | 9.1 C | +0.30 C |
| 1934 | 8.4 C | -0.41 C |
| 1935 | 7.8 C | -0.96 C |
| 1936 | 8.1 C | -0.63 C |
| 1938 | 8.9 C | +0.16 C |
| 1939 | 8.9 C | +0.12 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
1909 to 1942| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 39.4 C (102.9 F) | 1930 | 35.0 C (95.0 F) | 34 |
| Coldest night (TNn) | -30.6 C (-23.1 F) | 1934 | -23.3 C (-9.9 F) | 34 |
| Wettest day (Rx1day) | 118.9 mm (4.7 in) | 1926 | 60.7 mm (2.4 in) | 34 |
| Wettest five days (Rx5day) | 169.4 mm (6.7 in) | 1924 | 91.1 mm (3.6 in) | 34 |
| Longest dry spell (CDD) | 28 days | 1934 | 18 days | 34 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1909 | 26.7 C (80.1 F) |
| 1910 | 32.8 C (91.0 F) |
| 1911 | 36.1 C (97.0 F) |
| 1912 | 6.1 C (43.0 F) |
| 1913 | 32.8 C (91.0 F) |
| 1914 | 35.6 C (96.1 F) |
| 1915 | 33.3 C (91.9 F) |
| 1916 | 37.8 C (100.0 F) |
| 1917 | 35.6 C (96.1 F) |
| 1918 | 38.9 C (102.0 F) |
| 1919 | 35.6 C (96.1 F) |
| 1920 | 33.3 C (91.9 F) |
| 1921 | 34.4 C (93.9 F) |
| 1922 | 33.3 C (91.9 F) |
| 1923 | 36.7 C (98.1 F) |
| 1924 | 33.9 C (93.0 F) |
| 1925 | 35.6 C (96.1 F) |
| 1926 | 34.4 C (93.9 F) |
| 1927 | 35.0 C (95.0 F) |
| 1928 | 33.9 C (93.0 F) |
| 1929 | 35.0 C (95.0 F) |
| 1930 | 39.4 C (102.9 F) |
| 1931 | 37.2 C (99.0 F) |
| 1932 | 36.1 C (97.0 F) |
| 1933 | 36.7 C (98.1 F) |
| 1934 | 36.7 C (98.1 F) |
| 1935 | 33.3 C (91.9 F) |
| 1936 | 38.3 C (100.9 F) |
| 1937 | 35.0 C (95.0 F) |
| 1938 | 34.4 C (93.9 F) |
| 1939 | 33.9 C (93.0 F) |
| 1940 | 34.4 C (93.9 F) |
| 1941 | 35.6 C (96.1 F) |
| 1942 | 17.8 C (64.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1909 | -21.7 C (-7.1 F) |
| 1910 | -22.2 C (-8.0 F) |
| 1911 | -16.1 C (3.0 F) |
| 1912 | -28.3 C (-18.9 F) |
| 1913 | -18.3 C (-0.9 F) |
| 1914 | -27.8 C (-18.0 F) |
| 1915 | -22.8 C (-9.0 F) |
| 1916 | -27.8 C (-18.0 F) |
| 1917 | -28.9 C (-20.0 F) |
| 1918 | -29.4 C (-20.9 F) |
| 1919 | -24.4 C (-11.9 F) |
| 1920 | -26.1 C (-15.0 F) |
| 1921 | -20.6 C (-5.1 F) |
| 1922 | -26.1 C (-15.0 F) |
| 1923 | -23.3 C (-9.9 F) |
| 1924 | -23.3 C (-9.9 F) |
| 1925 | -25.6 C (-14.1 F) |
| 1926 | -25.6 C (-14.1 F) |
| 1927 | -23.3 C (-9.9 F) |
| 1928 | -18.3 C (-0.9 F) |
| 1929 | -21.7 C (-7.1 F) |
| 1930 | -26.1 C (-15.0 F) |
| 1931 | -21.7 C (-7.1 F) |
| 1932 | -23.3 C (-9.9 F) |
| 1933 | -26.1 C (-15.0 F) |
| 1934 | -30.6 C (-23.1 F) |
| 1935 | -24.4 C (-11.9 F) |
| 1936 | -28.9 C (-20.0 F) |
| 1937 | -17.8 C (0.0 F) |
| 1938 | -22.8 C (-9.0 F) |
| 1939 | -23.3 C (-9.9 F) |
| 1940 | -22.2 C (-8.0 F) |
| 1941 | -20.6 C (-5.1 F) |
| 1942 | -30.0 C (-22.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1909 | 54.6 mm (2.1 in) |
| 1910 | 61.7 mm (2.4 in) |
| 1911 | 58.7 mm (2.3 in) |
| 1912 | 13.5 mm (0.5 in) |
| 1913 | 54.4 mm (2.1 in) |
| 1914 | 49.3 mm (1.9 in) |
| 1915 | 63.0 mm (2.5 in) |
| 1916 | 51.8 mm (2.0 in) |
| 1917 | 59.7 mm (2.4 in) |
| 1918 | 62.2 mm (2.4 in) |
| 1919 | 81.3 mm (3.2 in) |
| 1920 | 57.9 mm (2.3 in) |
| 1921 | 52.3 mm (2.1 in) |
| 1922 | 76.7 mm (3.0 in) |
| 1923 | 69.3 mm (2.7 in) |
| 1924 | 103.6 mm (4.1 in) |
| 1925 | 50.0 mm (2.0 in) |
| 1926 | 118.9 mm (4.7 in) |
| 1927 | 62.2 mm (2.4 in) |
| 1928 | 57.7 mm (2.3 in) |
| 1929 | 92.7 mm (3.6 in) |
| 1930 | 40.6 mm (1.6 in) |
| 1931 | 40.1 mm (1.6 in) |
| 1932 | 83.3 mm (3.3 in) |
| 1933 | 92.2 mm (3.6 in) |
| 1934 | 64.5 mm (2.5 in) |
| 1935 | 93.2 mm (3.7 in) |
| 1936 | 54.9 mm (2.2 in) |
| 1937 | 73.4 mm (2.9 in) |
| 1938 | 56.4 mm (2.2 in) |
| 1939 | 86.4 mm (3.4 in) |
| 1940 | 95.8 mm (3.8 in) |
| 1941 | 50.3 mm (2.0 in) |
| 1942 | 48.5 mm (1.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1909 | 54.6 mm (2.1 in) |
| 1910 | 115.0 mm (4.5 in) |
| 1911 | 97.6 mm (3.8 in) |
| 1912 | 13.5 mm (0.5 in) |
| 1913 | 67.4 mm (2.7 in) |
| 1914 | 85.9 mm (3.4 in) |
| 1915 | 82.6 mm (3.3 in) |
| 1916 | 69.1 mm (2.7 in) |
| 1917 | 70.6 mm (2.8 in) |
| 1918 | 64.7 mm (2.5 in) |
| 1919 | 125.0 mm (4.9 in) |
| 1920 | 78.8 mm (3.1 in) |
| 1921 | 70.4 mm (2.8 in) |
| 1922 | 114.0 mm (4.5 in) |
| 1923 | 100.9 mm (4.0 in) |
| 1924 | 169.4 mm (6.7 in) |
| 1925 | 93.8 mm (3.7 in) |
| 1926 | 145.8 mm (5.7 in) |
| 1927 | 90.4 mm (3.6 in) |
| 1928 | 91.7 mm (3.6 in) |
| 1929 | 119.6 mm (4.7 in) |
| 1930 | 51.2 mm (2.0 in) |
| 1931 | 87.6 mm (3.4 in) |
| 1932 | 155.4 mm (6.1 in) |
| 1933 | 138.7 mm (5.5 in) |
| 1934 | 96.0 mm (3.8 in) |
| 1935 | 103.9 mm (4.1 in) |
| 1936 | 89.2 mm (3.5 in) |
| 1937 | 109.0 mm (4.3 in) |
| 1938 | 69.9 mm (2.8 in) |
| 1939 | 129.1 mm (5.1 in) |
| 1940 | 138.7 mm (5.5 in) |
| 1941 | 77.5 mm (3.1 in) |
| 1942 | 48.5 mm (1.9 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1909 | 13 days |
| 1910 | 22 days |
| 1911 | 19 days |
| 1912 | 11 days |
| 1913 | 12 days |
| 1914 | 15 days |
| 1915 | 14 days |
| 1916 | 13 days |
| 1917 | 21 days |
| 1918 | 19 days |
| 1919 | 19 days |
| 1920 | 25 days |
| 1921 | 14 days |
| 1922 | 24 days |
| 1923 | 22 days |
| 1924 | 23 days |
| 1925 | 13 days |
| 1926 | 18 days |
| 1927 | 18 days |
| 1928 | 14 days |
| 1929 | 14 days |
| 1930 | 22 days |
| 1931 | 12 days |
| 1932 | 19 days |
| 1933 | 13 days |
| 1934 | 28 days |
| 1935 | 19 days |
| 1936 | 25 days |
| 1937 | 11 days |
| 1938 | 13 days |
| 1939 | 23 days |
| 1940 | 16 days |
| 1941 | 21 days |
| 1942 | 14 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
24 years with a frostAcross 24 years with a frost, the median last spring frost at Muncy Valley falls on 20 May and the median first autumn frost on 25 September, which leaves a median of 122 days between them.
| Measure | Median, all years | Earliest period | Recent period (1910 to 1939) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 20 May | n/a | 20 May | n/a | n/a |
| First autumn frost | 25 September | n/a | 25 September | n/a | n/a |
| Growing days | 122 days | n/a | 122 days | n/a | n/a |
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
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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).